The lovely variegated evergreen shrub, Fatsia japonica ‘Murakumo Nishiki’, is really looking fabulous now, as we move into fall. The commercial availability of this woody ivy relative, has been a bit sparse, but hopefully propagation protocols will continue to improve. There are so few cuttings per plant that the only real answer for better availability is to use tissue culture. Hardiness Zone 7b-10.
Introducers of new century plant selections are challenged with coming up with appropriate cultivar names, often have a propensity to use wordplay, referring to the agaves spiny teeth. Two favorites, we photographed this week are below, Agave titanota ‘Snaggletooth’ (top), and Agave titanota ‘Sabertooth Tiger’ (bottom). Both are mutations of the same original plant, the later was derived from a mutation that flipped the pattern from an edge to a center. Agave titanota is prized as a summer patio container plant due to its relatively slow growth rate. Plants must be stored indoors for the winter when the temperature drop below 40 degrees F.
Ruellia malacosperma is providing a lovely pop of purple in front of the variegated gardenia. The fine-textured foliage in the foreground is provided by the rare Texas native, Hibiscus dasycalyx. When you’re planting in the garden, think of each planting as a photographic vignette, and you’ll be amazed what it will do for the visual appeal of the garden.
We’ve played around with growing cast iron plants from seed, curious if the white-tipped pattern of Aspidistra elatior ‘Asahi’ was heritable. Turns out that it is. Aspidistra ‘Blizzard’ is our seedling with well over half of the leaf being white. That makes it both beautiful, but insanely slow growing. The plant below has been in the ground for 5 years, planted as a two year old seedling.
Looking great in the summer garden is the stunning cast iron plant, Aspidistra elatior ‘Asahi’. This amazing woodland evergreen is a plant we can’t imagine gardening without. The leaf patterning is brightest as the new leaves emerge in June/July. Grown as a house plant, it needs to get some size before you will see the leaf patterns in containers. The Japanese name, ‘Asahi’ translates to “morning light”. Hardiness is Zone 7a-10b.
Below is a variegated sport of M. ‘Mission to Mars’. These have reached 5′ in width.
Mangave ‘Foxy Lady’ is a variegated sport of M. ‘Silver Fox’
The variegated hardy hibiscus, H. ‘Summer Carnival’ has looked outstanding all summer. This Hans Hansen creation has both variegated leaves and flower buds. We’ve had these in the garden since 2017, and they continue to excel. Moist to wet soils and full sun are ideal, but they handle short term drought just fine. Hardiness is Zone 4a-9b.
Begonia ‘Caribbean Star’ is looking excellent in our begonia garden trials, despite our 11 degree F. winter. This fascinating Tim Anderson (Palm Hammock Orchid Estate) hybrid was made widely available thanks to begoniaphile, John Boggan. Our 2′ tall x 2′ wide ‘plants have been in the ground since 2019, although earlier trials failed to survive winter lows of 7 degrees F. That makes Begonia ‘Caribbean Star’ a good Zone 8a plant.
The North American native Thuja plicata ‘4Ever’ is looking particularly stunning in the garden this summer. Of all the forms of Thuja plicata we’ve trialed, this is undoubtedly the brightest. Reportedly maturing at 12′ tall x 3.5′ tall, I’m left to wonder what they used the measure the size. Our 4 year old specimen is 5′ tall x 5′ wide. Based on the current growth rate, we’d expect 12′ tall x 12′ wide in 10 years, so if you’re looking at “forever”, I’d probably put these on 15-20′ centers.
We’ve tried a number of Caryopteris x clandonensis cultivars over the years, and most fail to survive more than one of our hot, humid summers. One recent exception that surpassed all of our expectations is the amazing Caryopteris ‘Gold Crest’. Below is a mid-July image from the garden.
From the incredibly fragrant foliage to the color, to the pollinator friendly flowers, this is one amazing plant for a well-drained sunny spot in the garden. Our clumps have matured at 3′ tall x 5′ wide, so allow enough room. Hardiness is Zone 6a-9b.
I wrote a short note about my friend Pam Harper, who passed away last week, but wanted to share a little more. Below are a couple of her amazing selections of Arum italicum, that she shared through the years. The top is Arum italicum ‘Pamela Harper’, was one of her seedlings that former NY nurserywoman, Ellen Hornig, named in her honor.
The one below is a selection that Pam named, Arum italicum ‘Ringlets’. It’s hard to show how amazing it is in a photograph, but this is my feeble attempt. We have yet to divide our original clump, but that will probably happen soon.
Pam’s son, Nick also shared a couple of videos, so those of you who didn’t know Pam or have the chance to visit her garden can get a better of picture of this amazing woman. The first is a YouTube of her garden, and the second is her appearance on the former television show, Gardener’s Diary.
Remember that Nick is looking for a gardener to purchase her amazing home and garden. He can be reached at firstname.lastname@example.org We hope you’ll help us spread the word about this once-in-a-lifetime opportunity.
Juniperus x pfitzeriana ‘MonSan’ is looking quite exceptional in the garden. Since we live in the community of Juniper, NC, we thought we should have a significant collection of the our namesake genera. This Monrovia Nursery introduction, which is a hybrid between the Asian Juniperus chinensis and the Eurasian Juniperus sabina, is truly stunning. Although it’s marketed by the introducer as maturing at 3′ tall x 4′ wide, our six-year-old plants are 3′ tall x 12′ wide. Could someone be trying to trick you in to buying many more plants that you actually need…hmmm? Hardiness is Zone 3b-8b, at least.
We’ve been fascinated with the African genus of bulbs, Ledebouria for many years, and one of our best successes has been the South African Ledebouria ovalifolia, which has thrived outdoors in our garden
In 2015, we spotted a single streak of variegation on one leaf. After eight years of work, we have isolated that original streak into a stable edged pattern as you can see below in our newly named, Ledebouria ovalifolia ‘Rainbow’s End’. Since it’s only managed three divisions in eight years, we’ll be experimenting with some other propagation techniques.
Most plants are a bit like bell-bottom jeans–one minute they’re the hottest fashion, and the next minute, you can’t give them away. In 2000, when Persicaria microcephala ‘Red Dragon’ hit the market, it was the hottest perennial in the country. You couldn’t visit a garden center or nursery that didn’t carry it.
Fast forward 23 years later, and good luck finding this Greg Speichert introduction. The first year Plant Delights offered this, we sold 644 plants. Within just a few years, that number had dropped to less than 2 dozen annually, which is below the level where the economics of propagation make sense. It’s really a shame, since as you can see below, our plant that went in the ground in 1997 still looks great. It’s almost like playing the lottery to try and figure out what to include in each new catalog.
One of favorite native trees is looking stunning in our parking lot. Acer rubrum ‘Schocking Gold’ was discovered by NC plantsman Richard Schock near his home in Boonville, NC. Richard shared his find with us in 1993, and we subsequently named the tree after him. Occasionally, when we’ve seen it offered, it’s listed incorrectly as ‘Shocking Gold’. We propagated one of these for the upcoming Southeastern Plant Symposium auction.
Here’s an early June shot from the garden. The conifer in front left is Picea abies ‘Glauca Pendula Oxtail’. The weeping conifer in the distance is Cupressus glabra ‘Raywood’s Weeping’. The bright shrub in the distance is Ligustrum lucidum ‘Marble Magic’. Delve more into the world of woody ornamentals during the upcoming Southeastern Plant Symposium and Rare Plant Auction, June 16-17, 2023, hosted by JLBG and JCRA. Register now for in person or online attendance.
We have long admired the clumping Japanese hakone grass, Hakonechloa macra, but struggled to make them happy in our heat and humidity. We could get them to barely survive, but never look as lovely as they do in cooler climates.
Unfortunately, there are very few plants with the texture, form, and shade tolerance of hakone grass, so choosing a good substitute isn’t really an option. We continued to try each newly introduced cultivar, but none thrived, until the arrival of Hakonechloa macra ‘SunFlare’. We first acquired this selection in 2017, and have been over the moon thrilled with its performance since that time. The photo below was taken this spring of our oldest six-year-old clump. Hardiness is Zone 5a-7b.
Looking really lovely in the garden now is Juniperus x pfitzeriana ‘Daub’s Frosted’. This selection of the hybrid between Juniperus sabina and Juniperus chinensis was introduced by Oregon’s Mitsch Nursery in 1987. Our 18″ tall patch has spread to 10′ wide in less than 5 years. All of those trusted on-line sources say it matures between 5 and 6′ wide…Ooops.
One of the newest discovered species of our native asarum (formerly Hexastylis) is Asarum finzelii, from northeastern Alabama. In foliage, the plant resembles both Asarum arifolium and Asarum speciosum. The flowers, however, are quite different from both, as you can see below. It is our hope to get this propagated before too long, so we can work to make it more widely available.
Here’s a golden moment from JLBG this spring. The gold tree in the back is Salix ‘Golden Sunshine’. In the foreground is Juniperus conferta ‘All Gold’. The small tree in the center is Acer palmatum ‘Koto-no-ito’, and the purple foliage shrub is Physocarpus opulifolius ‘Seward’. Garden scenes can be tied together by repeating colors, even with different plants.
Looking stunning now is one of our favorite native shrubs, the golden leaf selection of Hydrangea quercifolia, named ‘Little Honey’. Our plant below is now 19 years old, and measures 4′ tall x 7′ wide. There are few woodland plants that can brighten a corner the way this gem can–and this is without the spikes of white flowers. Hardiness is Zone 5a-9a.
Our garden specimen of Acer palmatum ‘Geisha Gone Wild’ is looking quite fabulous. Not only is it great from a distance, but a closeup of the foliage is simply amazing. Our 10 year-old plant has reached 10′ in height.
We have really enjoyed the sprig foliage show of Osmanthus fragrans ‘Qiannan Guifei’ for the last few weeks. This spring-emerging variegated foliage adds a whole new level of “wow” to the sweetly fragrant tea olive shrub, Osmanthus fragrans. This new selection, introduced from China to the US by our friend Ted Stephens of Nurseries Caroliniana, is from Qiannan-based plant breeder, Tan Zhi-ming. Winter hardiness is Zone 7b-9b.
The skirt of leaves of the European Geranium phaeum (mourning widow) are always a favorite in the early spring garden. We truly love this clump-forming hardy geranium, that behaves superbly in the woodland garden.
In the wild, the amount of black pattern on the foliage varies, but Geranium phaeum ‘Samobor’, is an exceptional clone, originally discovered in the wilds of Croatia. The foliage is topped in early spring, with short stalks of small purple flowers, but it’s the foliage that makes this a standout. Hardiness is Zone 4a-8b.
Looking lovely in the gardens today is the incredible Epimedium ‘Pink Champagne’. This 2007 Darrell Probst introduction still remains one of the finest fairy wing cultivars ever introduced. Our plant below is growing where it receives a couple of hours of mid-day sun. A mature clump will reach 2′ tall x 3′ wide. Winter hardiness is Zone 5a-8b.
When it comes to plants, we’re what you’d call a high risk, high reward garden. In other words, nothing ventured horticulturally, nothing gained. That was our thoughts last year when we planted our only plant of the rare variegated orchid, Cymbidium goeringii ‘Xueshanbiancao’ in the crevice garden, just months before our coldest winter in five years.
Not only did our baby sail through the winter, but it’s now sporting a flower, which is also variegated with a narrow creamy border. The soil mix in this section is 50% Permatill, 25% native sandy loam, and 25% compost. How cool is that!
Many gardeners tend to ignore the narrow leaf Trillium lancifolium in favor of the larger, more impressive species, but we think this smaller toadshade is quite garden worthy. Below are two clones we’ve named and introduced in the past. One is in full flower here at JLBG, and the other is right behind in mid-March. Hardiness is Zone 6a-9b.
Those of us who have studied trilliums extensively in the wild, feel that all Trillium lancifolium are not created equal. In other words, what is currently known as Trillium lancifolium is most likely 2-3 different species. These are botanically known as cryptic species, since they are hiding in plain site. Advances in DNA now allows researchers to confirm field observations, so don’t be surprised if you see more new trillium species being named from this complex.
The first image below is Trillium lancifolium ‘Lancelot’, a selection from North Florida that forms dense clumps, compared all of the other plants from this population, which grew as solitary stems. The flowers are also butterscotch instead of the typical purple.
Trillium ‘Black Panther’ is a JLBG selection from a cross of genetics from a Florida population with a Tennessee collection. It also forms dense clumps.
Ajuga ‘Cordial Canary’ is one of the new generations of well-behaved bugleweed selections, this from the work of Chris Hansen. It looks pretty amazing for mid-March at JLBG. We love colorful groundcovers that play nice with their surroundings. Zone 4a-9b.
We’ve been fascinated with the woody plant genus Loropetalum since the late J.C. Raulston first distributed the pink-flowered forms, which had just come into to cultivation in the US, back in 1989. Since those original plants were propagated and sold, many nurseries have tried to one up each other with a barrage of new introductions. Today, we have documented 68 named cultivars of Loropetalum, of which we currently grow only 22. Below are a few from JLBG, which are currently in full flower.
Sadly, most folks mistakenly think these are foundation shrubs, thanks to unscrupulous retailers. Most, are in fact, either large shrubs or small trees. Yes, if you’re into plant mutilation as a form of legal S&M, you can shear them into bizarre boxes and meatballs, but do you really think this is a good idea? Do you really hate natural beauty that much?
Below are a few named selections with their advertised sizes and their actual sizes, so you can plant them in the proper place. Winter hardiness is Zone 7b-9b.
Loropetalum ‘Snow Panda’ has been truly outstanding for us. It was introduces as maturing at 10′ tall x 9′ wide, and our 7-year-old plant is now 7′ tall x 12′ wide.
Loropetalum ‘Zhouzhou‘ is sold as ‘Zhoushou Fuchsia‘ and as ‘Pipa’s Red’. These are listed as maturing at 5′ tall x 6′ wide and 12′ tall x 12′ wide, depending on which name is on the tag. The reality is that it matures at 30′ tall x 20′ wide, as you can see below with our 27-year -old specimen.
Loropetalum ‘Ruby Snow’ is a fascinating chimeral misfit (think schizophrenic) selection with both white and pink flowers. The introducer touts it as maturing at 6′ tall x 6′ wide, but our 6-year-old specimen is already 8′ tall x 14′ wide, so this will get far larger than the tags indicate.
Loropetalum ‘Daruma‘ is an extremely heavy flowering selection that is sold as maturing at 5′ tall x 5′ wide, but this isn’t even close. The 6-year-old specimen below is already 6′ tall x 9′ wide, and our oldest specimen had to be removed from its original location after it reached 16′ tall x 16’ wide.
Loropetalum ‘Shang Hi’, sold under the marketing name Purple Diamond, is touted as maturing at 5′ tall x 5′ wide. Ooops–our 14-year-old plant is already 15′ tall x 15′ wide. Perhaps we need to give remedial measuring courses to some of our nursery folks.
Loropetalum ‘GrifCRL‘, marketed as Little Rose Dawn, is incredible in flower, but it’s marketed as maturing at 10′ tall x 10′ wide, and our 16-year-old specimen is now 18′ tall x 18’ wide.
Loropetalum ‘Crimson Fire’ is much more red than most selections. The introducer claims it will mature at 4′ tall x 5′ wide, but our 6-year-old plants are already 10′ tall x 10′ wide.
These are just a few of the amazing selections, but keep in mind to never trust plant tags when it comes to where you should plant your plants to keep from needing to butcher them.. Until nurseries and plant introducers learn to care more about the end consumer’s success, it’s always a good idea to visit botanic gardens and determine the true size for yourself.
Flowering in the garden this week is our Macon, Georgia collection of the southeast US native Asarum arifolium ‘Macon Jars’. Other forms of A. arifolium from further north in it’s range won’t be flowering for several more weeks. We trim the old anise-scented foliage of our asarums so we can better enjoy the amazing floral show of this native woodland perennial. The new leaves will emerge in just a matter of days.
Flowering now in the garden is the delicate toadshade, Trillium delicatum. This diminutive trillium, published in 2019, hails from Central Georgia, where it naturally grows in floodplains. Despite a damp habitat, it has performed beautifully for us, even in average to dry garden soils. This species is quite rare, and is suffering significant damage from feral hogs, making ex-situ conservation even more important. Our clumps are getting large enough for us to hopefully make divisions available within the next year.
Flowering in the garden now is the wonderful US native Pachysandra procumbens (Allegheny spurge). Native from Indiana south to the gulf coast, our selection, Pachysandra ‘Angola’ comes from the woods near that well-know Louisiana prison. This stunning evergreen, variegated, slow-spreading, woodland groundcover, is quite different from its better known and much faster spreading Asian cousin, Pachysandra terminalis. The flowers are also sweetly fragrant, what more could you want? Hardiness is Zone 5a-9b.
Platycladus orientalis ‘Van Hoey Smith’ is looking absolutely fabulous in our garden this winter. This fascinating selection of Oriental arborvitae, Platycladus orientalis was named after the late Dutch conifer guru, Dick van Hoey Smith (1921-2010), by an American nurseryman, who reportedly received these cuttings, unlabeled, from Dick. Some conifer folks think this is actually an old cultivar, Platycladus orientalis ‘Aureovariegata’. I understand this is not a good performer in climates with low humidity, but it sure likes it here in NC. Winter hardiness is Zone 5b-9b.
So, who is Van Hoey Smith? Born, James Richard Pennington van Hoey Smith, Dick’s family started the famed Trompenberg Arboretum in Holland, which Dick later ran from 1950 until he handed over the reins to his successor Gert Fortgens, in 1996. If you haven’t visited, I highly recommend a visit for any keen plant lover.
Dick was a founder of the International Dendrology Society, a membership society of the worlds keenest woody plant aficionados. He also wrote/photographed several reference books including Maples of the World, Conifers, and Rhododendron Portraits. He was awarded the worlds’ top horticultural prizes, including the Doorenbos Medal from the Dutch Dendrological Association and the Veitch Memorial Medal from the Royal Horticultural Society.
The variegated wide-leaf holly, Ilex latifolia ‘Snow Flash’ is loaded with berries and looking quite spectacular in the garden this month. We’ve shared cuttings with several nursery folks, so hopefully, this will be making its way into the market. The plant was originally brought to the US from Japan by plantsman Barry Yinger. Our specimen below is now 18 years old. Hardiness is Zone 6a-9b.
Agave x protamericana ‘Funky Toes’ is looking fabulous in the garden today, having sailed through our cold winter in tip top shape. This unique form of the well-known North American native agave is an introduction of the former Yucca Do Nursery, from one of their collections in Northern Mexico.
In 2018, we found a streaked leaf on a potted offset. By using a technique called crown cutting, we were able to isolate the bud from the streaked leaf into a yellow center, which we named Agave ‘Funky Monkey’…photo below. Hopefully in the next few years, we’ll have enough of this new introduction to share.
Our 2nd earliest trillium is up and almost ready to flower. The deep south native Trillium underwoodii is the second toadshade to emerge, only behind the Florida genetics of Trillium maculatum, which emerges here in December. Although there is plenty of cold remaining, Trillium underwoodii is able to tolerate multiple nights of hard freezes below 20 F after the foliage has emerged. Winter hardiness is Zone 6a-9b.
We thought we’d share a photo taken this week of the original plant of Illicium parviflorum ‘Florida Sunshine’ from our garden. All plants sold worldwide originated with cuttings taken from our specimen. The original plant has now been in the ground here for 22 years and measures 8′ tall x 8′ wide. The foliage becomes brightest in the cool temperatures of winter. Who says Southeast US native plants look ugly? Hardiness zones 6a to 9b.
Agave ‘Crazy Horse’ is an amazing agave hybrid we purchased back in 2005 from an Ebay seller in Texas. The vendor had found the plant growing at a real estate office in Montgomery County, Texas. It’s obviously a hybrid, but we still don’t know the parentage for sure. If we had to guess, it appears to be a hybrid of Agave x protamericana and Agave cupreata. In the 18 years, we’ve grown it, it’s been an exceptional plant, forming 3.5′ tall x 5′ wide rosettes, and suckering tightly against the main clump. This year, it sailed though our winter cold of 11F. It’s been almost a decade since we’ve offered this, so perhaps it’s time we propagate a few more to share.
In 2011, we spotted a tiny creamy white streak on a single leaf of a small pup, which was potted for further observation. After several years, and thanks to crown cutting, we were able to produce a highly-streaked plant, which we call Agave ‘Craziness’…see below.
Several years later, we were able to isolate the streaked leaves into a stabilized central variegation we named Agave ‘Bareback Rider’. Although winter hardiness also disappears with the creamy white foliage, it still makes a superb container plant. With that much white in the leaf, the growth rate has also slowed dramatically. It’s our hope that within the next year or two, we can finally release this amazing form through Plant Delights.
Our 13 year old clump of the evergreen Japanese Asarum asperum is looking superb in the garden this week. Looks like it’s about time to divide this for the first time and start to build up stock so we can share in the future. Winter hardiness is Zone 6-9.
We can’t imagine there are many people who grow cast iron plants from seed, but we have found the results quite fascinating. Below are a couple of our seedling which we found good enough to name. Neither has been divided yet, and are still under evaluation, but we think they have good potential.
Aspidistra ‘Bright Lights’ is a 2015 seedling from Aspidistra ‘Okame’ and has a similar variegation pattern, although it has more white banding than its parent.
Aspidistra ‘Illumination’ is a 2016 seedling of Aspidistra ‘Sekko Kan’, and inherited the white tips from its mama, but has also pickup up more streaking that wasn’t present in the preceding generation, so perhaps it outcrossed to a nearby streaked parent. If you’re interested in trying this yourself, the seed are found in a 1-2″ wide green ball at the base of the plant now. The seed should be mature in the next 4-6 weeks.
I had to chuckle as folks on several Facebook plant groups were wringing their hands in worry prior to the recent cold snap, while we were secretly hoping for even colder temperatures than forecast.
JLBG registered three consecutive nights in the teens recently; 11F, 19F, and 19F. While this was certainly not abnormal for our area, folks with very short memories thought the horticultural world was coming to an end. In reality, we recorded similar temperatures in the winter of 2017/2018, albeit a week later that year.
When we first started the gardens at JLBG, we were squarely on the Zone 7b side of the Zone 7a line. We are now on the Zone 7b side of the Zone 8a line. In order words, we have shifted about 1/4 of a hardiness zone. Since 2018, JLBG has registered three consecutive Zone 9a winters, so it’s not surprising the new gardeners or those with short memories start assuming that all kind of plants are reliably winter hardy, which is not the case.
We long for cold temperatures because we want and need good winter hardiness data, and while mild winters may be enjoyable to us Homo sapiens, we don’t learn anything about plant hardiness from those winters. So, here are a few things we learned this year.
Agave weberi ‘Stone Cold Austin’ is Patrick McMillan’s collection of Agave weberi from Austin, Texas. We’ve tried Agave weberi a couple of times prior, and could never get it through one of our milder winters. Patrick’s original plant at Clemson got large enough to flower there, so we’re hoping for the same. The older foliage is showing damage from 11F, and will most likely be lost, but the bud seems fine so far.
We’ve never had any luck with any of the dwarf Agave lechuguilla mutants we’ve tried in the garden, but this new one, shared by plantsman Hans Hansen, that we call Agave ‘Tater Tot’, had no problem with 11F. These are often sold as Agave x pumila, which actually doesn’t exist. Everyone assumed that A. x pumila was a hybrid, but when one in Europe recently mutated back to the original form, it turned out to be nothing more that a super dwarf form of Agave lechugullla.
Mangave ‘Racing Stripes’ is a plant we had high hopes for in terms of winter hardiness, but we had not had a cold enough winter to get good data. Our only reservation was that it contains genes from the tropical Agave gypsophila. Thankfully, our plant came through the 11F freeze in reasonably good shape. The wrinkled nature of the older leaves are indications of cold damage that will show up in a few more days, but the core seems intact and should re-grow.
We fully expected Bambusa multiplex ‘Green Giant’ to be defoliated after 11F and the stalks killed to the ground, but our fully exposed clump still looks like it’s mid-summer…at least from the north side.
On the south side, the same clump has fried foliage. There are typically two causes for such damage. One is wind desication when the winds are blowing from a single direction and the ground is frozen, making it impossible for the plant to replenish water lost through the foliage. During the time that our ground was frozen, our winds were coming from the West, so that wouldn’t account for damage only on the south side of the plant.
In this case, the more likely scenario is that this is due to sun scorch when the soils was frozen, since the damage is on the south side. If the canes are indeed undamaged, as it appears, new leaves should reflush in spring.
We didn’t hold out much hope for the Mexican palm, Brahea decumbens, but it sailed through 11F unscathed.
Since we know that genetics matters, we will often plant more than one clone of a marginal plant like a new palm. Below are two seedlings of the small-seeded European Fan Palm, Chamaerops humilis var. microcarpa. The first shows significant foliage burn, while the second plant, growing nearby shows no damage after 11F.
The hardiest of all Sabal palmetto forms are those from NC’s Bald Head Island. Our plant from there came through the cold unscathed. We expect many local businesses and even homeowners who purchase large trunked forms directly from Florida growers will probably be in for a disappointing spring.
All of our hardy cycads have assumed the straw-color we see every year when the temperatures drop below 18 degrees F. The plants are fine, but we recommend waiting to remove the dead fronds, since doing so now, can cause the new foliage to emerge in the middle of winter, which is never a good idea. April 1 is our target date to remove the fried foliage.
One of the real surprises was the fried foliage of Viburnum ‘Moonlit Lace’, where it was growing in full sun. The same plant growing in shade looks untouched. The stems are fine and the plant should re-sprout fine, but gardeners who grow this in full sun may be disappointed.
This is the coldest temperatures we’ve seen since planting Patrick’s hardy selection, Opuntia microdasys ‘Dripping Springs’. Our clump looks great after the cold. It’s hard to imagine that this clone is so much more winter hardy than any of the other forms of this species that we’ve tried previously and killed at much warmer temperatures. Although we don’t offer this for sales, I’ll remind you of our great prickly pear cactus giveaway at our Summer Open Nursery and Garden in July.
The Mexican Sedum praeltum looks a bit sad, but actually seems to be fine with sound buds up and down the stem. This little-known perennial forms a plant that looks almost exactly like the tender Jade plant, Crassula ovata.
Lastly, our patches of Living Stones, Lithops aucampiae, sailed through 11 degrees F. I wonder if we can ever get all the disinformation on the Internet regarding their tolerance to cold corrected.
We love camellias, but we really love the amazing banded leaf, variegated camellias, of which we’ve assembled a decent collection. Here is our plant of Camellia japonica ‘Taiyo’ in the garden now, which is just absolutely striking.
Our oldest clump of the North American native Agave lophantha ‘Splendida’ is preparing to celebrate its 10th anniversary in the garden at JLBG. What started as a single pup, now has an extended family. Please join us in sending birthday wishes to this great century plant selection.
This is a very good year for the annual winter fruit show on Rohdea japonica (sacred lily). The attractive berries remain until early March, when they begin to drop. Although seed from these cultivars do not come true, you’ll always end up with an interesting variety of offspring.
Here’s a new photo of Agave parryi ssp. huachucensis ‘Excelsior’ from our garden this week. We typically don’t have many variegated century plants that will survive our winters, but this is one of the exceptions. This superb clone was first introduced in 1967 from a small California nursery by the same name. Protection from excess winter moisture and exceptional drainage is always the key in cold, wet winter climates. This particular planting is under a roof overhang. Hardiness zone 7b to 9b.
We have been fascinated with hardy cyclamen since the 1960s, but in recent years have spent a bit of time isolating some of the best silver-leaf variants that showed up in our seed pots and getting these established in the garden. These silver leaf oddities can be found in the wild, although they are fairly rare. In cultivation, however, they come fairly true (50%) from seed.
Through Plant Delights, we offer these as seed strain cultivars, under the names below…when available. A new crop of cyclamen will go on-line January 1, and there are some real beauties. Here are some images from the garden this week. Winter hardiness is Zone 4a-8b.
Here’s a garden shot just prior to our expected first freeze of the year. Foreground to back: Muhlenbergia lindheimeri, Salvia darcyi, Juniperus conferta ‘All Gold’, Cuphea micropetala, Salvia ‘Phyllis Fancy’.
We are always interested in checking out the offspring, when plants in the garden have unexpected romantic rendezvous with their distant cousins…often when we least expect it. We have found arums tend to be quite promiscuous in the garden. While most offspring go to the great compost pile in the sky, a few are worthy of adoption and naming.
Below is our selection of a cross of Arum dioscorides x Arum italicum that we named Arum ‘Love Child’. While the foliage resembles typical Arum italicum, the spring-borne flowers show great influence of Arum dioscorides with the purple spotting inside the spathe. It’s our hope that Plant Delights will have a first crop of this new hybrid to share in the 2023 catalog.
Last week, we were repotting our container agaves prior to winter, when we ran up on this unusual sight. Let me begin by explaining that there are three groups of agaves, based on how they propagate: solitary agaves, rhizomatous agaves, and offsetting agaves. While it’s not unusual for a rhizomatous agave to produce an underground shoot in container, this level of underground shoots is highly unusual. What is even stranger is that this is a non-rhizomatous cultivar.
Since some agaves are poor or non-offsetters, the only way to force them to multiply is to remove the apical bud, either by means of coring, or drilling. Once this is done, the agave usually forms offsets in the remaining leaf axils. For some reason, when this plant of Agave ‘Ripple Effect’ was cored, it went nuts by developing underground rhizomes.
Left to its own devices, there will be one plant produced from the growing tip of each rhizome. There is, however, a dormant bud every few inches along the rhizome, so in theory, this could produce hundreds of plants if we can figure out how to make the dormant buds break. Below are the shoots after we unwound the twisty rhizomes.
As fall temperatures drop, it’s not unusual to find our native bees asleep in some of the most interesting places. We caught this carpenter bee fast asleep on the job this week, clinging tightly to the spines of an Agave parryi.
We love the various shades of green displayed by the fascinating Fatsia japonica ‘Murakumo Nishiki’. This amazing Japanese selection of tree ivy is looking rather stunning in the garden this month. This is a slow-growing shrub, which should mature at 4′ tall x 6′ wide. There is a shortage of these in commerce currently, because of a problem with tissue culture lab production. Winter hardiness is Zone 7b-10b.
Looking good in the garden now is Begonia taiwaniana ‘Alishan Angel’, which is our 2008 collection from 6,500′ elevation in Taiwan’s Yushan Province. This specimen has now been in the ground since 2010, and is thriving in a fairly dry woodland location. We introduced this selection in 2020 and will be offering it again in 2023. Hardiness is Zone 7b-9b at least.
The false yew, Cephalotaxus harringtonia ‘Gold Dragon’ is looking particularly lovely during the fall season here at JLBG. This is one of our six year old specimens. We find that half day sun seems to bring out the best color without foliar burn. Hardiness is Zone 6a-9b.
Ajuga ‘Parrot Paradise’ is one of many new next generation colorful ajuga groundcovers that have hit the market in the last few years. These have been amazing in our trials, as you can see from the October photo below. Best of all, we haven’t seen any seedlings, which have been a problem with several of the more common clones in commerce. We think both the color and growth habits are truly outstanding.
In our hot, humid climate, we really struggle with keeping most cultivars of Caryopteris x clandonensis alive for very long. A lovely exception in our trials has been Caryopteris ‘Gold Crest’, a recent introduction from the plant breeders at Ball Hort. Here is our three year old clump in the garden this week. The foliage is deliciously fragrant…more so than any other caryopteris we’ve ever grown, and the native bees find it incredibly attractive. We’ll be adding this to the new Plant Delights catalog in January. Winter hardiness is Zone 6a-9b.
With the trend for green mulch (i.e. groundcovers), we continue to trial a number of new introductions that fit the bill. One of the top performers continues to be Sedum ellacombeanum ‘Cutting Edge’ PP 28,926. This 2016 Brent Horvath introduction has thrived in both sun and light shade, making a perfect ground-hugging mat. Despite being a top performer, sales were miserable when we offered it a few years ago. We’re not sure why it sold so poorly, but we now have some lovely drifts in the garden.
We always look forward to elephant ear evaluation day at JLBG, which was recently completed.
Each year, Colocasia breeder, Dr. John Cho flies in from Hawaii to study and select from our field trials of his new hybrids. This year we were joined by Robert Bett, owner of the California-based plant marketing firm, PlantHaven, who handles the Royal Hawaiian elephant ear program. The JLBG trials consist of all named colocasia introductions growing alongside Dr. Cho’s new hybrids created the year prior.
JLBG staff members, Jeremy Schmidt and Zac Hill spent most of the morning working with Robert and John on the time-consuming evaluation process.
After lunch, Jim Putnam from Proven Winners, joined us to see which remaining plants struck his fancy for potential introduction into their branded program. As you can see, lots of amazing plants didn’t make the final cut, which is necessary, since we’ll need more room for the new selections.
Plants selected for introduction are then sent to a tissue culture lab to be produced for the next step, which is grower/retailer trials. If these are successful, and the plant can be multiplied well in the lab, the plants are scheduled for retail introduction.
Hopefully, by now, most folks are familiar with our 2020 top selection, Colocasia ‘Waikiki’, which hit the market this year. There are more really exciting new selections in the pipeline, but we can’t share photos of those quite yet…stay tuned.
Looking particularly lovely in the late summer garden is Fatsia japonica ‘Murakumo Nishiki’. This irregularly gold variegated form of the typically solid green tree ivy is a star in the light shade garden. This evergreen gem is a great way to add a spot of color in the woodland garden year round. Hardiness is Zone 7b-10b.
One of our favorite evergreen shrubs is the queen of the variegated boxwoods, Buxus sempervirens ‘Elegantissima’. This plants thrives in part sun to light shade, where it looks great every month of the year. This excellent clone, which has been grown in Europe since the mid-1800s, matures at 5-6′ in height. Not only is it great in the garden, but if you have enough, you can cut some to use as a foliage filler in flower arrangements.
We’ve long been fascinated by Amorphophallus konjac ‘Shattered Glass’, an unstable variegated cultivar, developed by plantsman Michael Marcotrigiano. Some years, the foliage emerges solid green, other years with a small bit of sectoral variegation, and this year with a fully variegated leaf.
I’m more and more impressed with Hosta ‘Miss America’ each year. Not only is this white-centered hosta amazingly vigorous, but it has one of the finest floral shows we’ve ever seen on a hosta. The steel rod-like upright flower stalks on our plant have reached 4′ tall, but as the plant grows larger, they will eventually top 6′ in height. Not wind, rain, or post office vehicle can knock down these super sturdy stalks, and the great show they provide for weeks. Our plant is 100′ from our back porch, and it shows up like a floral beacon even from that distance.
One of our favorite broadleaf shrubs is undoubtedly Orixa japonica ‘Pearl Frost’. Orixa is a monotypic (one species) genus in the citrus (Rutaceae) family, that’s virtually unknown in US gardens.
We are particularly enamored with this superb variegated form, brought into the US by plantsman Barry Yinger. Orixa ‘Pearl Frost’ matures at 8′ tall x 6′ wide, and we have found it to thrive in both full sun to light shade, although full sun plants require more moisture.
We love the spineless Agave bracteosa ‘Stingray’ in the garden. We’ve had these dotted throughout the garden since 2017, and so far, with good drainage, they’ve handled our winters quite well, which is certainly not normal for a variegated century plant. This particular species prefers part sun to light shade. Hardiness is Zone 7b/8a and warmer.
Here’s a photo this week of one of our favorite North American native plants, Juniperus horizontalis ‘Copper Harbor’. This would certainly add significant year round color interest to any native plant garden. In our trials, this is far and away the best of the golden Juniperus horizontalis cultivars. We offered this selection for a couple of years, but there seemed to be little interest.
Looking lovely today is the amazing Agave x romanii ‘Shadow Dancer’. This fascinating agave is a man-made hybrid between two Mexican species, Agave filifera and Agave mitis. Not only is it a hybrid, but this selection has a fascinating variegation pattern that’s not seen on any other century plant. The new growth emerges ghostly cream with a muted green border. As the leaves age, they green disappears and the leaves become pure parchment white. Despite the seeming lack of chlorophyll, Agave ‘Shadow Dancer’ has amazingly good vigor and doesn’t burn in full sun. This has potential winter hardiness for Zones 8b and south, but needs more trialing to know for sure. In other climates, it’s a great container specimen.
This spring, one of our flats of Rohdea japonica seedlings turned up with an inordinate number of variegated seedlings. In a flat of approximately 1,000 seedlings, we typically expect 3 – 10 variegated offspring, when the parent plant has white streaking in the middle of the leaf (L2 layer).
All of the variegated seedlings were removed and potted individually last week…all 300 of them. It will be fascinating to see what unique forms result.
We ran across this fascinating reticulated leaf form of the US native (every state east of the Mississippi) groundcover partridge berry (Mitchella repens) last week, when tromping through the woods near JLBG. We’ve taken a few cuttings that will be evaluated here for garden performance. In 60 years of botanizing, this is the first form we’ve seen with this nicely patterned foliage.
Here’s a garden shot at JLBG, using a good bit of gold foliage in addition to flowers. Left to right: Viburnum dentatum ‘Golden Arrow’, Sinningia ‘Amethyst Tears’, Baptisia ‘White Gold’, Canna ‘Tama Tulipa’, Lysimachia nummularia ‘Aurea’ (groundcover), Hibiscus ‘Holy Grail’ (purple), Spirea thunbergii ‘Ogon’, Trachycarpus fortunei (palms).
Ever since I saw my first dragon’s-eye pine over 40 years ago, I was smitten, and throughout the years have been fortunate to collect several different named cultivars with this unique trait where the new needles emerge bicolor white and green. Here is our young specimen of Pinus densiflorus ‘Burke’s Red Variegated’ looking lovely in the gardens this week. This selection of the Japanese red pine, originated as a seedling from Long Island’s Joe Burke, from the cultivar Pinus densiflorus ‘Occulis Draconis’. Hardiness is Zone 5-8.
Below are two variations on a theme…calla lilies in the garden. Here is Zone 7b, both are reliably winter hardy in the ground.
The striped-leaf selection of the winter-blooming South African native, Zantedeschia aethiopica ‘African Gold’ has looked fabulous all spring, where we have it planted in a seep, which gets full sun for 3-4 hours in the morning.
Zantedeschia ‘Picasso’ is a hybrid, created using several of the summer-flowering South African native calla lily species. Here it is in our garden in mid-June, where it gets 4-6 hours of sun daily, and the soil stays reasonably moist.
We often hear and read that hostas won’t grow well in the mid and deep south, so we thought we should share a few garden photos from this week at JLBG (Zone: 7b), to bust yet another garden myth.
Starting with some small/miniature hostas, the first is Doug Beilstein’s Hosta ‘Baby Booties’, a superbly vigorous dwarf that has really been exceptional.
Hosta ‘Blue Fingers’ is a PDN/JLBG introduction of one of the very few tiny blue-leaf hostas with excellent vigor and a good multiplication rate.
Hosta ‘Wriggles and Squiggles’ is an exceptionally wavy-leaf, small, gold introduction from plant breeder, Hans Hansen.
Hosta ‘Fire and Ice’ is another Hans Hansen introduction that was a reverse sport of Hosta ‘Patriot’. It fares much better when given more light, even a few hours of sun in the morning.
Hosta ‘Swamp Thing’ is a PDN/JLBG introduction with great vigor and glossy foliage
Hosta ‘Beyond Glory’ is a Hans Hansen sport from Hosta ‘Glory’. This is just one exceptional hosta, which also benefits from a bit of morning sun or very open shade.
Hosta ‘Diamond Lake’ is a stunning new Hans Hansen creation with large blue corrugated leaves with exceptional leaf rippling.
Hosta ‘Gold Meadows’ is one of our favorite sports of Hosta sieboldiana ‘Elegans’. When the weather warms, the central pattern fades to solid blue, but in spring, it’s absolutely stunning. It has also shown great vigor in the Southeastern US.
Hosta ‘One Last Dance’ is a Hans Hansen/Walters Gardens sport of Hosta ‘Dancing Queen’. We think it’s hard to beat this amazing plant. The vigor is evident in our photo.
The lovely native witch hazel, Hamamelis virginiana ‘Little Prospect‘ with its variegated foliage, looks amazing even when it isn’t in flower. The leaves show no foliar burn in full sun and it is just as beautiful in part shade. Hardiness Zone: 3a to 8b.
Here are a few of the many buckeyes that are looking good at JLBG this spring.
Aesculus pavia is native from Illinois south to Texas and east to Florida. Hardiness is Zone 4-8.
The European Aesculus hippocastanum has thrived for us, despite most sources claiming we are too hot in the summer. Aesculus ‘Hampton Court Gold’ emerges with ghostly yellow foliage for an amazing spring show.
Aesculus x carnea is a hybrid of the European Aesculus hippocastanum and the American Aesculus pavia. This cross was first discovered in Europe in 1812. It is quite stunning in our garden as you can see. Hardiness is Zone 5-8.
The dwarf form of Aesculus glabra only occurs in a small region of Northern Alabama/Georgia. Mature size is 5-6′ tall. Hardiness is Zone 5-9.
Aesculus sylvatica is one of our oldest buckeye specimens in the garden. This species is native from Virginia to Alabama. Hardiness is Zone 6b-8b.
Aesculus sylvatica ‘Sylvan Glow’ is Jeremy Schmidt’s discovery of an amazing seedling of Aesculus sylvatica that emerges rosy red, then changes to orange, before aging to green for the summer. When it gets a bit larger, we will try to propagate this so we can share.
Here are some of our favorite Japanese maples looking quite lovely in the garden this week, starting with Acer palmatum ‘Geisha Gone Wild’. This Buchholz Nursery introduction is a fascinating sport of Acer palmatum ‘Geisha’.
The leaf color of Acer palmatum ‘Tsuma Gaki’ has to be seen to be believed.
Our favorite of the weeping cutleaf purple cultivars is Acer palmatum ‘Orangeola’. Our specimen is now 27 years old.
Even when the sun isn’t out, the golden willow, Salix sachalinensis ‘Golden Sunshine’ provides a bright spot in the garden. We love this amazing tree. I see quite a few sources who list this on-line as maturing at 18′ tall x 7′ wide. Well, that’s not quite accurate. The five year old specimen pictured below is now 25′ tall x 25′ wide. Growth is much faster in moist, rich soils, but it seems someone needs to trade in their tape measure.
Solomon’s Seals comprise several genera of woody perennials, but the common name is most commonly associated with the genus, Polygonatum in the Asparagus family. It seems hard to imagine, but the Asparagus family now includes many popular garden plants including its namesake Asaparagus, but also hosta, agave, liriope, ruscus, and yucca.
The genus Polygonatum is native through much of the world, although the center of distribution is in Asia. We’ve been collecting these amazing woodland perennials for years, and now have a collection of over 380 different taxa. Here are a few from this week in the garden.
Polygonatum mengtzense is a dwarf, rarely cultivated species from North Vietnam.
The dwarf, glossy-leaf Chinese Polygonatum nodosum just oozes elegance.
When you run out of species to grow, you start creating hybrids. This is our new selection of a cross of the giant Polygonatum martinii and the more compact, Polygonatum falcatum. We’ve named this clone Polygonatum x marcatum ‘Winsome Wonder’
Polygonatum odoratum ‘Chanticleer’ is a superb, large-leaf form of the Asian Polygonatum odoratum that I spied at Chanticleer Gardens, and they kindly shared in 2006. Hopefully, we’ll finally have enough to share next year.
Polygonatum odoratum ‘Angel Wings’ (aka: ‘Carlisle) is a superb form of Polygonatum odoratum from Massachusetts plantsman, Roy Herold. This gem grows in both half day sun as well as shade.
Over the last few weeks, I’ve been working on a plant survey of a local woodland area of about 30 acres. The low, moist areas are filled with Arisaema triphyllum, (Jack-in-the-pulpit) which is quite common in our area. The first image is what is typical for the species.
I’ve been studying patches of Jack-in-the-pulpit for well over 55 years, always looking for unusual leaf forms that showed any type of patterning. Until last month, I’d never found a single form with atypical foliage. That all changed with my first trip to this local site, where so far, I have found several dozen forms with silver leaf vein patterns. Up until now, there are only two pattern leaf forms of Arisaema triphyllum in cultivation, Arisaema ‘Mrs. French’ and Arisaema ‘Starburst’.
Each patterned leaf clone varies slightly as you would expect within a population including both green and purple stalk coloration.