Our OCD is on full display with many of our plant collections including the summer-flowering Crinum lilies. Our collections here at JLBG have now topped 400 crinum taxa. In addition to collecting the best plants from other breeders, we have also been making a few of our own selected hybrids. Below are a few photos of plants we have recently selected and named. None of these are available yet, and most will still be a few years away, while we build up enough stock to share.
If you’ve never grown crinums (first cousin of hippeastrum), they form huge bulbs, and thrive in full sun in average to moist soils.
If you get your gardening information on-line, where everything written is a fact, you’ll know for sure that acacias aren’t growable in Zone 7b, Raleigh, NC. If that includes you, don’t look at the photo below of Acacia greggii ‘Mule Mountain’ in flower at JLBG. Acacia greggii is a native from Texas west to California. Our seven year-old specimen is from Patrick McMillan’s collection in Cochise County, Arizona.
To be nomenclaturally correct, most of the US Acacias have now been moved into the genus Senegalia, so even though the American species aren’t from anywhere near Senegal, this is now known as Senegalia greggii.
Of course, it you also read the hogwash on-line about native pollinators needed and preferring plants they evolved with, then you’ll also have to ignore the masses of native bees that cause the entire plant to buzz while they’re feeding. It’s good we don’t let our plants and insects read books or the Internet.
We’ve grown quite a few stachys (pronounced stay-kiss) through the years, but have been most impressed this spring with our newest acquisition, Stachys cretica. This fascinating dryland perennial has a wide natural range from France to Iran, where it thrives in rocky, dry, Mediterranean-like conditions. Our plants are seed-grown from Greek Plantsman, Eleftherios Dariotis, who will be speaking at our upcoming Southeastern Plant Symposium.
Stachys is one of the largest genera of plants in the sage (Lamiaceae) family, with estimates ranging from 300 to over 400 species. Stachys species are spread worldwide, being found from Europe though Asia, Africa, and into North America.
Shockingly, Stachys cretica seems virtually unknown to most gardeners, despite it puttig on a killer floral show in an unirrigated bed, and being foraged in our garden, by a huge number of bumblebees.
It’s been quite a floral extravaganza this spring in the dryland garden sections. Here are the latest of our flowering barrel cactus that have bloomed recently at JLBG. All of our cactus are growing outside without any winter protection in our zone 7b garden. The key for most is simply good soil drainage.
Just over a year ago, we built a new berm garden, adjacent to our Open House welcome tent. Here is that garden today. The soil is composed of 50% Permatill (slate gravel), 25% compost, and 25% native soil). This is in an unirrigated section of the garden. Like all garden spaces at JLBG, no commercial fertilizers are ever allowed. The exceptional drainage and high nutrient content from the compost and Permatill result in an amazing growth rate.
I’ve adored the perennial Lychnis coronaria (Rose Campion), since I first saw it in my grandmothers city courtyard 60 years ago, but the darn thing just produces far too many seed, which results in far too many seedlings. Imagine my joy at finding a sterile counterpart on my 2020 trip to the UK at the amazing nursery of plantsman Bob Brown.
Lychnis ‘Hill Grounds’ is actually a hybrid of Lychnis flos-jovis and Lychnis coronaria, discovered at the Hill Grounds garden of the UK’s Janet Cropley. In appearance, it’s a dead ringer for Lychnis coronaria with its lovely fuzzy silver rosettes and spikes of tacky fluroescent pink flowers, but without those pesky seed. We look forward to getting this propagated so we can share far and wide. Below are our 2 year old plants. Winter hardiness should be Zone 3-8.
Eighteen years ago, we introduced an amazing collection of the native Dicentra eximia from the West Virginia shale barrens that we christened for the nearby natural area, ‘Dolly Sods’. We found this amazing plant growing in pure gravel, in a bright sunny canyon that regularly saw summer temperatures in excess of 100 degree F.
We had struggled previously with other forms of Dicentra eximia, which is native all the way to the Canadian border. Not only did this seed strain thrive, but it did so in full baking sun. Here is a recent image of a clump growing beside an agave, where it thrives.
The Greek bellflower, Campanula formanekiana has been superb in the crevice garden this spring. This amazing monocarpic (dies after flowering) species take three years to flower, and when it does, it puts on one heck of show. It’s namesake was Czech botanist, Eduard Formanek (1845-1900). We’re hoping for a good seed set. Hardiness is Zone 7a-9a, at least.
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.
Looking great in the gardens this week is our 2021 introduction of Baptisia ‘Blue Bunchkin’ (available again in 2023). Baptisias are North American native perennials and are equally at home in a bone dry site or as a marginal aquatic…as long as they get at least 4-6 hours of sun daily. Hardiness in Zone 4a-9b.
Here is a small sampling of the amazing array of flowers that are in the garden currently (late April/early May) on our pitcher plants. The genus Sarracenia is native to North America and hails from Canada south to Florida, where they are found in seasonally damp bogs. In the garden or in containers, they are incredibly easy to grow as long as they have moist toes (roots), and dry ankles (base where the crown meets the roots). Winter hardiness varies based on the species, but most are hardy from zone 5a to 9b.
I hope everyone with a sun garden has grown the amazing Amsonia hubrichtii. It’s certainly looking fine in the garden as this recent image from JLBG will attest. Few people realize it was name after the late American naturalist, Leslie Hubricht. Before Hubricht died in 2005 at age 97, he had published 108 new species of mollusks (snails). His world class collection of over 500,000 specimens is now housed in the Chicago Field Museum.
After an early life stent as a research associate at the Missouri Botanic Garden, Hubricht went on to spend the majority of his career as a repairman for adding machines, and later computers. During his career, he moved constantly, living in 22 different cities. His single-minded focus was studying nature…in particular, mollusks. In his spare time, he published 151 scientific papers. This would be almost unheard of for a researcher who had the backing of a major formal botanical institution, of which Hubricht had none.
Additionally, 25 new species of animals wered name after him, along with one lichen, and two species of plants…most notably the amsonia. Hubricht did all this despite a formal education that only included a single semester of high school. We salute the amazing Leslie Hubricht.
Nierembergia ‘Starry Eyes’ is looking particularly dazzling in the rock garden at JLBG. Starting to flower for us in late April, this incredible gem is from our 2002 botanical expedition to Argentina. I distinctly remember walking by as our friends from Yucca Do Nursery extracted a small piece of this nierembergia with only a single flower attached. I remember thinking to myself how poorly nierembergias, in particular Nierembergia repens perform in our climate and how I wouldn’t have wasted my time on such a plant. Two decades later, boy was I wrong!
In our climate, Nierembergia gracillis ‘Starry Eyes’ blooms continually through the summer months. It thrives in full sun and a well drained, gravelly soil. Thank you Yucca Do, for all the great introductions!
The crevice garden has “woke” for spring, with early flowering plants in full gear. Here’s a shot of one small section, featuring Delospema dyeri and Iberis simplex (taurica). We hope you can visit in person for the second weekend of our spring open house, May 6 – 8, 2022.
I fell in love with puccoons several decades ago, when I first saw them growing on the Michigan dunes as I hiked around the shoreline. I was immediately smitten with this native member of the Borage (pulmonaria) family. There are 21 different species of Lithospermum (puccoon) in the US, where some go by the common name, stoneseeds.
It would take me five transplant attempts over the next three decades before we were able to successfully get one established in the garden. The photo below is our collection of Lithospermum caroliniense (hairy puccoon) from East Texas, flowering now in it’s new home adjacent to our crevice garden. This species is partial to acidic, sandy soils, so our next task is to figure out what other conditions it will tolerate and then to get it propagated, so we can share.
Ok…raise your hand if you’ve grown Aphyllanthes monspeliensis? This odd, monotypic (only member of the genus) is actually a member of the Asparagus family. Hailing from France south into Northern Africa, Aphyllanthes can be found growing in hot, dry, sandy soils, where it produces an amazing spring show of blue flowers on a 1′ tall clumper. The species name “monspeliensis” is named after Montpellier, France, where it grows naturally. Our plants are thriving in our crevice garden, putting on a superb flower show in mid-April.
Iris ‘Gerald Darby’ is one of those iris that doesn’t even need to flower to be garden worthy. Here it is in our garden this week, emerging with its’ purple leggings. This gem is a North American native hybrid of Iris versicolor and Iris virginica, known as Iris x robusta. This introduction of Iris breeder Gerald Darby was actually named for him after his death by another iris breeder R.H. Coe of England. Iris x robusta ‘Gerald Darby’ is equally at home growing in standing water as it is in typical garden soil. Hardiness is Zone 4a-9b.
Will someone please explain to me why more people aren’t growing the amazing sea kale, Crambe maritima. This amazing perennial is a great tasting green that returns every year without replanting. It’s also a great flowering perennial, putting on a show now in our rock garden. We have also never seen any pest activity such as typically bothers other members of the cabbage family. Our plant is growing in half-day sun in pure gravel (in our crevice garden), and never receives any supplement irrigation. The economic return from Crambe maritima is huge. I guess some folks may not find it attractive, but darn, folks!
Here are a few buttery-colored plants flowering today in garden, starting with Arum creticum ‘Golden Torch’. This started as a small field division of a particularly large flowered selection from our 2010 expedition to Crete.
Paeonia mlokosewitschii is known for being un-pronouncable, so most folks refer to it as Molly the Witch peony. This is a particularly lovely butter yellow form from Ellen Hornig of the former Seneca Hill Perennials.
Trillium sp. nov. freemanii is a still unpublished new trillium species (hopefully soon), that we discovered in 1998. Normally red flowered, this is a rare yellow-flowered form.
My visit to Crete in 2010 was eye-opening when I observed that most native daphnes of the region grew in full sun among rock, in the driest conditions imaginable. That prompted us to re-try many of the daphnes that we’d killed years earlier…obviously, with too much kindness. Now, all of our daphnes are planted in baking sun in our crevice garden, or similar rock garden conditions. Here are a few photos at JLBG from early April.
The first is the Mediterranean native, Daphne collina, which most authorities now subsume under Daphne sericea. All daphne pictured below should be hardy from Zone 6a – 8b.
Daphne ‘Rosy Wave’ is a Daphne collina hybrid with Daphne burkwoodii
Daphne x napolitana ‘Bramdream’ is a hybrid of Daphne collina and Daphne cneorum.
Here are an assortment of Iris species flowering at JLBG during the last week of February. So many folks only know the bearded iris of later spring, and miss these amazing winter gems. Join us this weekend for our Winter Open Nursery & Garden Days and explore our winter blooming iris.
The first is Iris tuberosa, a winter blooming tuberous iris from Mediterranean Europe. Iris tuberosa is one of the few examples, where a Latinized name change actually results in something that’s easier to pronounce. This gem was formerly known by the tongue twisting name, Hermodactylus tuberosus. Most iris grow from rhizomes, with the tuberous iris being a much smaller and less-known group. We have found these to grow best in part sun. Winter hardiness Zone 7b-10b.
The West-Asian (Caucuses, Iran, Turkey, and Russia) Iris reticulata is also different, in that it grows from a bulb. These are quite easy to grow, and are available commercially in a number of named color forms. Below is Iris reticulata ‘Painted Lady’…looking stunning today. The reticulate (netted) iris grow best in full to part sun. Hardiness is Zone 3-8.
We’ve shown some of the Mediterranean Iris unguicularis recently, but here are a couple more looking particularly nice this week…Iris ‘Front Drive’ (top) and Iris ‘Winter Echos’ below. Hardiness for both is Zone 6b-9b.
The superb (and spineless) Ilex ‘Cherry Bomb’ is looking amazing in the garden this week. Our specimen is now 22 years old, and measures 35′ tall x 15′ wide. It originated at the US National Arboretum as part of Dr. William Kosar’s breeding program, and is a 1959/1960 seedling from Ilex ‘Nellie R. Stevens’, most likely a hybrid with the spineless Ilex integra.
It was sent around to different growers for evaluation trials under a code #, and was later determined to not have enough value for northern US growers, so a destruction notice was sent by the National Arboretum.
Like some characters in the slasher flicks, it wasn’t completely destroyed, as propagations from the holly managed, quite improperly, to make its way to the deep south, where growers found it quite extraordinary, and in the 1980s, it was given the name Ilex ‘Cherry Bomb’ by Dr. Dave Creech of Steven F. Austin University. This wonderful plant is now a staple in the Southern nursery industry.
Cryptomeria japonica ‘Little Diamond’ is one of our favorite dwarf Japanese cedar selections, this one from Holland Konjin Nursery prior to 1990. This specimen at JLBG is five years old and measures 2′ tall x 3′ wide. At maturity, we have seen these reach 4′ tall x 8′ wide.
For years, we struggled to grow the Mediterranean/Balkan native spurge, Euphorbia characias…until we discovered its secrets. First, it isn’t a long lived plant to begin with…in most cases 3-5 years is it, so you’ll need to plant it where it’s likely to reseed. That would be well-drained slopes that are either mulched or covered with gravel.
Secondly, after it flowers in spring with its stunning show of yellow flowers, remove most of the flower stalks as soon as flowering has finished, except those needed to produce new seedlings (the flowers are also great to use in floral arrangements). If not, the seed stalks use up energy causing the plant to decline much faster. We’ve now allowed this to seed throughout the slopes in front of our house, and here is the result…a smattering of 3′ tall x 3′ wide clumps, photo taken mid-winter.
Although this section of the garden, planted in compost-amended sandy loam is irrigated, we typically don’t recommend irrigation for this spurge without excellent drainage. You’ll also read on-line that Euphorbia characias doesn’t like hot, humid summers…another example of fake gardening news that just keeps getting repeated without any concern for the facts.
We’ve also found Euphorbia characias to grow well in part sun under large trees, which keeps the soil dry. The plants will never be as dense as they are in full sun, but they survive and flowers. There is really not anything else that gives you this evergreen blue color and form in the winter garden.
We love our Mediterranean blue fan palms…one of the coolest palms we can grow outdoors. We’re right on the edge of winter hardiness for Chamaerops humilis var. argentea, so the key is to grow it to a larger size before planting in the ground. We’ve lost a few that we planted too small, and when that planting coincided with a cold winter.
This is a photo taken this January of our oldest clump, now 17 years old. This is a very slow growing palm, so a good bit of patience is required when getting it established. When we do experience single digits F winter temperatures, all of the foliage is burned back, but it re-sprouts from the base in spring. Mediterranean blue fan palm hails from high elevations in the Atlas Mountains of Morocco, where it eventually makes a 15′ tall specimen. In our cold winter climate, we doubt it will ever top 4′ in height. It should be winter hardy from Zone 7b and warmer.
Since we’ve been growing agaves, one of the most fascinating things we’ve noticed is the incredible attraction of tree frogs and Carolina anoles to their leaf texture. There is hardly a day that goes by that we don’t spot one or the other, nestled on an agave leaf. Here is our most recent image of our native green tree frog, Hyla cinerea, basking in the sun on an Agave parryi hybrid. Ain’t nature grand!
I first met Juniperus chinensis ‘Kaizuka’ on a mid 1970s student field trip to Florida with the late JC Raulston. As our caravan of University vans crossed from Georgia into Florida, these junipers suddenly appeared everywhere. Although, I was unfamiliar with this architecturally fascinating specimen, I was in love….despite it being common as the proverbial dirt in Florida landscapes. Everywhere from gas stations to the poorest home seemed to have at least one. Most locals know Juniperus ‘Kaizuka’ as either Juniperus ‘Torulosa’ or Hollywood Juniper…a common name it gained due to its ubiquitous presence around Los Angeles. It turns out that Juniperus ‘Kaizuka’ was an introduction from Japan’s Yokohama Nursery prior to 1920. Our oldest plants at JLBG are now 33 years old, and now measure 24′ tall x 16′ wide. The one pictured below is a new 5 year old planting in a new section of the garden. Forty-five years later and still in love!
The dwarf groundcover Sedum tetractinum ‘Little China’ is superb throughout the growing season, but we particularly love when cold weather arrives and the olive green foliage turns to bright red in the sun…what a superb winter show. Hardiness is Zone 4a-8b.
I remember falling in love with the dwarf river birch, Betula nigra ‘Little King’, back around 1990 when it was first planted at the JC Raulston Arboretum in Raleigh, NC. This amazing compact selection originated in the late 1970s at King Nursery in Oswego, Illinois, and starting in 1991, was adopted and formally marketed through the Chicagoland Grows plant introduction program.
After 20 years, the original plant in Illinois was only 10′ tall, but the 30 year old specimen at the JC Raulston Arboretum has now reached 30′ tall x 30′ wide So, while it is much slower growing, it’s not exactly a true dwarf. Most estimates conclude that Betula ‘Little King’ will grow about 1/3 to 1/4 the speed and size of the typical species, making it a much better choice around most smaller homes. That said, we love the compact, dense habit and have recently planted this specimen around our home on the JLBG property. Hardiness is Zone 4-9.
One of many great attributes of mangaves, compared to one of their parents, agaves, is that they don’t die after flowering. Agaves are mostly monocarpic, which mean that they behave like bromeliads, where each rosette grows to maturity, then dies after flowering. Those species of agave which offset, live on after flowering, by means of un-flowered offsets. Those agave species which don’t offset are a one and done after they flower and reproduce by reseeding.
By incorporating manfreda genes to create xMangaves, the monocarpic trait disappears. After a mangave flowers, it dies to the ground, but like a good zombie, it soon pops back from the dead. Here is a current photo from the garden of two clumps of xMangave ‘Blue Mammoth’. The first, larger clump has not flowered, but should do so next year. The second clump with all the offsets, flowered in 2020, and re-grew to this point in 2021. Next year, the rosettes will continue to re-grow in size.
I’ve never been a huge fan of nandinas in the garden. I find the more typical forms very difficult to integrate from a design perspective, and I find the popular Nandina ‘Firepower’ to be near the top of the list of most grotesquely ugly plants used in American landscapes. Yes, it’s colorful, but the plant lacks any grace, and has the form of a pile of wet red Kleenex.
Of the older cultivars, I like Nandina ‘Harbor Dwarf’, with it’s low spreading form, but the paucity of fruit keeps most people from planting it. The only downside for us is that it spreads to cover a very large footprint, so can choke out other nearby plants. We continue to trial all of the new nandina introductions to see if anything strikes our fancy.
My favorite member of the genus, which I first met at the JC Raulston Arboretum back in the 1980s, is Nandina domestica ‘Filamentosa’. This cutleaf, slow-growing, non-fruiting selection from Japan is often marketed under the trade name San Gabriel. It adds a distinctly Japanese flavor to the landscape, which is why we planted a mass in our new Japanese garden. Here is a photo from this week with it’s lovely rosy winter color. Winter hardiness is Zone 6b-9a.
Most plants have Latin name epithets (the 2nd word) that describes/commemorates either a place, person, or plant characteristic. In this case, the foliage of this Greek wooly mullein (Verbascum undulatum) is ridiculously wavy. Here it is looking great in our rock garden during the early winter. This will be our first full winter with it in the ground, so fingers crossed that it survives.
It’s hard to imagine a plant more obscure that the Southeast coastal native Houstonia procumbens. You may recognize the name houstonia as belonging to one of the many more common bluets. Instead, this is a creeping white-et. We’ve had this in our alpine rock garden for a couple of decades, but barely notice it until November, when the flowering picks up as other plants around it are going dormant. In the wild, Houstonia procumbens can be found in moist pine savannahs as well as nearby disturbed habitats. We’re unsure if this is showy enough for anyone to actually purchase.
In full flower this fall is Disanthus cercidifolius. Ok, so full flower on a disanthus may not seem too exciting to the petunia and pansy crowd, but plant geeks find these flowers pretty darn cool. We’d nearly given up on growing this witch hazel relative after finding in our first few attempts that it has zero heat tolerance. It wasn’t until we obtained a plant from a Chinese population (Disanthus cercidifolius ssp. longipes) of the better known Japanese native, that we realized there is a form we can grow, and grow well. Not only does the Chinese form have heat tolerance, but it also thrives in full sun. The specific epithet “cercidifolius” means foliage like a cercis (redbud).
We love the appearance of plants like agapanthus in the fall, long past the season when the showy blue flowers graced the top of each now browning stalk. In fall, it’s more like looking out on a mass of punk rock hairdos. These garden features are so much more interesting than flat beds of mulch, created far too early by garden neat freaks. This is the cultivar Agapanthus ‘Prolific Blue’ which puts on a superb fall/winter show.
The beauty berries are looking quite good this fall in the garden. Two forms of Callicarpa americana are a bit unique. The white fruited Callicarpa americana ‘Lactea’ has been stunning, as has the pink-fruited Callicarpa ‘Welch’s Pink’, discovered by Texas plantsman, Matt Welch.
A fairly new beauty berry to cultivation thanks to the US National Arboretum is the Chinese Callicarpa rubella. Over the last few years, we have fallen in love with this amazing plant. This is our garden specimen planted in 2015. The new foliage is spring is tinged black…a nice touch!
We’ve been experimenting to see how many species of asclepias will survive in our climate, and one that has been quite fascinating is Asclepias subulata. This odd species from the southwest deserts of the US has evergreen glaucous stems, and not much in the way of leaves. It will be quite interesting to see what the butterfly larvae actually consume. It did flower for us this fall for the first time. This will be our first winter, so fingers crossed it can take our cold and wet temperatures. We sited this on a slope in one of our crevice gardens, so it wouldn’t drown in our summer rains.
Many gardeners are familiar with or have grown arum…mostly forms of the widespread Arum italicum, but few have grown the blingy gem of the genus, Arum pictum var. sagittitifolium. We are thankful to have this amazing collection from an Alan Galloway expedition to Majorca, Spain. Sadly, this species isn’t nearly as winter hardy (Zone 7b and warmer) as Arum italicum and we have never been able to coax it to set seed.
Salvia regla ‘Jame’ (pronounced Haam-hey) is looking so wonderful this time of year. This amazing North American native (US/Mexico) was originally shared back in 2000, by the late Salvia guru, Rich Dufresne. It has adorned our gardens every year since with these amazing fall shows. Hardiness is Zone 7b and warmer.
There are few plants that put on a better fall show than the amazing Eupatorium havanense, now known as Ageratina havanensis. This oustanding Texas native is flowering now, having burst into flower in early November, providing nectar for a wide variety of insects, and great floristic enjoyment for a wide variety of gardeners. Plant Delights offered this for a number of years, but sadly, few people could be enticed to purchase one. Hardiness is Zone 7b and warmer.
We have been very impressed with this stunning new selection of Podocarpus from Japanese nurseryman, Yoshio Sato. Podocarpus ‘Miu’ is a wonderfully variegated selection that has shown a good dense habit, great coloration, and no burning in full sun.
Since so many Americans purchase plants based on the name, and Japanese cultivar names make plants a very difficult sell in the US, the US marketing folks sell this as Roman Candle podocarpus. No matter what you call it, it’s a heckuva plant. Hardiness is Zone 7b and warmer. The marketing folks say this will mature at 15′ tall x 4′ wide, but the in the patent, the originator says it matures at 50′ tall x 25′ wide. Hmmm…that’s quite a discrepancy. Sounds like someone is fibbing.
Two cousins in the Amaryllis family are the genus lycoris and nerine. While most lycoris (China/Japan) thrive here, the same is not true of their South African cousins, nerine. It’s been rather frustrating trying to find the same season-ending success with nerines, as we have with the summer flowering lycoris.
Consequently, we’re celebrating over the performance of Nerine angustifolia. We picked up this gem from a South African nursery several years ago, and despite it being native to swampy grasslands, it has thrived for us in the unirrigated, dry berms that lead to our parking lot. Here it is in its full splendor this fall. We think this has immense horticultural potential.
About the same time that America’s Captain Kirk blasted off into space recently, we were enjoying his namesake here in the gardens at JLBG. Crinum kirkii is a fantastic dwarf crinum lily to only 18″ tall, that is sadly almost never seen in commerce. Full disclosure…Crinum kirkii was actually named for botanist Sir John Kirk, who found and sent this previously undescribed species from his outpost in Zanzibar to Kew Gardens in 1879.
Crinum kirkii has thrived for us here in Zone 7b since 2012. Our plants of this African species are from Tanzania. Perhaps one day, we can produce enough of these to share.
Calycanthus ‘Burgundy Spice’ is looking so great in the garden at JLBG this fall…right before it strips down for the winter. We love this exceptional purple-foliage selection of the native Sweet Betsy, discovered and introduced by our friends, the Hesseleins’ of Pleasant Run Nursery in NJ.
Flowering this week is the amazing Southeast native subshrub, Clinopodium georgianum. The leaves have a wonderful fragrance of strong peppermint, and the flower show isn’t bad either. This is Zac/Jeremy’s collection from Henry County, Alabama.
A carpenter bee working nearby stopped in for a floral snack.
Looking lovely in the garden is week is Gossypium thurberi ‘Mt. Lemmon’…our introduction of one of the progenitors of modern day cotton. On a 2005 botanical expedition, we discovered this North American native perennial hibiscus relative, known as Desert Cotton, growing in the mountains of Arizona. In the garden, it’s a superb flowering machine for late summer and early fall. Winter hardiness is probably Zone 8a and warmer.
Here is a future introduction for Plant Delights, a 2018 Wilkes County, Georgia collection of a dwarf, compact form of our native frost aster, Aster pilosus (Symphyotrichum pilosum), collected by our research staff, Zac Hill and Jeremy Schmidt. It’s looking rather impressive in the trial garden this week, 30″ tall x 5′ wide.
Last year, we saw a listing for a new Mangave, M. ‘Purple Passion’ on the availability of a West Coast liner producer, so we ordered some to try. It was immediately evident when we unpacked the shipment, that the plants didn’t look anything like a mangave, nor did what we received match the image that the supplier had on their website.
As we dug deeper, we found that the supplier had misappropriated a mangave image from another wholesaler and was using it for the plant we purchased, desptie the two looking nothing alike. Once the image issue was remedied, we set out trying to track down the origin of this strange plant, which looked more like a steamrolled eucomis than a mangave.
The supplier sent us to their supposed source, who had never heard of the plant in question. For six months, we have chased down one lead after another, contacting all of the well-known plant breeders of these type of plants on the West Coast. All dead ends.
Examining the plant in our garden this summer, it occurred to us that the unusual leaf netting must have come from a beschorneria. Comparing the foliage netting of ‘Purple Passion’ to beschornerias in our garden yielded a perfect match, except for the leaf color. The only plant which could have been crossed with a beschorneria to give such leaf color is a manfreda. Hence, our conclusion that our plant is in fact a new bi-generic hybrid, x Beschfreda ‘Purple Passion’ (beschorneria x manfreda).
Since we don’t know which species of beschorneria was used, we are uncertain about potential winter hardiness, but with plants in the ground now, all we need to do is wait for cold weather. Below is a photo of the plant in the garden this week. If you happen to know more of the backstory of this fascinating plant, please let us know.
Aster oblongifolius ‘Fanny’ (Symphyotrichum oblongifolium) has put on its normal superb show this fall. Keep in mind that this gets quite large. This is a 2 year old plant from a quart pot, which has already reached its mature size of 8′ wide.
Lespedeza ‘Little Volcano’ puts on quite a show each fall. Here it is in the garden this fall in full bloom. This amazing dieback perennial reaches an amazing 7′ tall x 15′ wide in good soils and full sun. Our friend Ted Stephens is responsible for bringing this gem from Japan to US gardeners.
For the first time in years, our olive (Olea europea ‘Arbeqina’) here at JLBG is loaded with fruit. It’s been a while since we’ve had a crop, not because of cold, but because a f..xy!!!zz? beaver cut our tree completely to the ground several years ago. We offered this through Plant Delights for many years, so we hope others have been equally successful at producing an olive crop.
Here’s a recent image of the amazing Colocasia esculenta ‘Maui Sunrise’, still looking great in late October! Moist, rich soils and full sun are the key for your plants to look this spectacular! Winter hardiness is Zone 7b and warmer.
Apologies for commandeering the famed Duke Ellington line, but it seems appropriate for the new Colocasia ‘Waikiki’.
When we first met Hawaii’s John Cho in 2003, we knew some special elephant ears would be the result of our collaboration, but it was hard to imagine something like the seriously tricked-out Colocasia ‘Waikiki’. Almost every year, John, who has now retired, but is still actively breeding elephant ears, travels to JLBG to evaluate his new hybrids at our in-ground trials and make future introduction decisions. There are some seriously amazing new selections starting down the introduction pipeline.
Colocasia ‘Waikiki’ will be released from Plant Delights Nursery on January 1, so if you like this, mark you calendars and stay tuned to the website.
Since we are limited in the number of hardy century plant species, our only option for more agave diversity in the garden is to create it by crossing existing hardy species together. Here are a few of our recent successes.
Agave x amourifolia is a Plant Delights/JLBG creation from a cross we made in 2016 that combined the genes of three century plants, Agave ovatifolia, Agave lophantha, and Agave x pseudoferox ‘Logan Calhoun’. Our size estimates were that the offspring would mature at 3′ tall x 5′ wide. Here is one of our garden specimens photographed this week, which has already reached 2′ tall x 3′ wide.
Below is Agave x ovox, a 2017 cross of the two giants, Agave ovatifolia and Agave x pseudoferox ‘Bellville’. We expect this to get huge…perhaps 5′ tall x 10′ wide.
Below is Agave x protifolia is a 2016 Mike Papay cross of Agave x protamericana x Agave ovatifolia. We also expect this to get quite massive.
Below is Agave x ovatispina ‘Blue Arrows’, a 2016 Mike Papay cross of Agave ovatifolia x Agave flexispina. We would have expected this to be a mature size, but it’s achieved this in only 5 years, so we think we’re seeing some serious hybrid vigor.
Below is Agave x ocareginae, our 2016 cross of Agave ovatifolia x Agave victoriae-reginae. Most likely, this elegant small grower will never offset.
Below is Agave x schuphantha, a 2015 Mike Papay cross involving three century plant species, Agave schidigera, Agave lophantha, and Agave lechuguilla. It’s formed a beautiful, symmentrical rosette, which should be getting close to mature size.
Outside of the nerdy members of the International Oak Society, few gardeners have ever heard of Quercus x vilmoriniana. This spectacular oak is a hybrid between the Asian Quercus dentata and the European Quercus petraea. Quercus x vilmoriniana has been known in European gardens since 1894, but is rarely seen in US gardens. The hybrid is named for the late French botanist Maurice Leveque de Vilmorin.
Our 20′ tall specimen at JLBG was planted in 2012 and has developed not only superb foliage, but splendid deeply-fissured bark. There is an old specimen at Cornell in NY, so it shows good cold tolerance in addition to loving our hot, sweaty summers. We have sown acorns from our plant, and if they grow, we will make this available though the Southeastern Plant Symposium Rare Plant Auction in June.
Our favorite fall-flowering legume is looking fabulous now. While most daleas (baptisia cousins) flower in spring and summer, only one that we’ve grown waits until fall to produce its amazing floral show. Dalea bicolor var. argyraea is an easy-to-grow species, found in the dry alkaline sandy soils of Texas and New Mexico. Here at JLBG, it has thrived everywhere it’s been planted…all dry, un-irrigated beds. Native pollinators love it also.
One of our favorite of the US native (Central Texas) desert ferns is Pellaea ovata. Here is our clump in the crevice garden looking quite nice this week. This is scheduled to return to the Plant Delights catalog in January. Hardiness should be at least Zone 7b and south.
Some new plants are flashes in the proverbial pan, while others become long term industry standards. Here is our patch of Solidago rugosa ‘Fireworks’ in the garden this morning. This 1993 introduction from the NC Botanical Garden and Niche Garden has still not been topped 28 years later…one of the most stunning and best performing perennials we’ve ever grown.
We admit to a long-standing case of buckwheat envy. Every visit to the worlds great rock gardens, such as the Denver Botanic Garden, leave us lusting to grow the rock garden genus, eriogonum. We’ve killed many members of the genus, since they truly hate our humid and wet summers. Even our crevice garden was no help in keeping these alive, even including our reportedly easy-to-grow Appalachian native, Eriogonum allenii. After almost giving up several times, we can finally declare success with the Texas native Eriogonum longifolium, from our East Texas botanizing expedition. Here’s our clump in full flower, and quite happy in one of the rock garden sections. Granted, it’s not as stunning as some of the species that thrive in Denver, but hey, we can now check that genus off the list.
We were harvesting our abundant fig crop last week, and were astounded by the number of green June Beetles also enjoying the ripe figs. This indulging makes the beetles into a sweet and tasty snack for the likes of crows, grackles, blue jays, and mockingbirds.
After gorging themselves through the summer, the beetles burrow 6-8″ down into the soil where they lay their eggs, which hatch in a couple of weeks and then overwinter as grubs, which feed on compost during the winter months. While living as larvae, the grubs are food for many underground mammals as well as above ground foragers like possums, racoons, and skunks.
Although green June Beetles are voracious feeders of over ripe fruit, that probably isn’t fruit you were going to eat any way, so they really aren’t damaging to the garden. Green June Beetles are much larger and less impactful than the dreaded Japanese beetles.
We actually enjoy these fascinating insects and don’t find any need to try and eradicate them. Since they don’t bite or sting, they are great for kids and adults looking for unusual sensory experiences to handle. Holding a green June Beetle in your hand is the best way to get a real buzz, and still be able to drive safely afterwards. The only downside is that they may poop on your hand, but that also is a new experience for most folks.
The parade of Lycoris (surprise lilies) continue into their third consecutive month as we move through September. The key for a succession of flowers is having a large number of cultivars. So far at JLBG, we have flowered 300 different cultivars this summer. Here are a few recent ones. The varieties which form fall foliage are winter hardy in Zone 7a/b and south. Those whose foliage emerges in late winter/early spring are winter hardy in Zones 4/5.
We are fascinated with the wonderful genus zephyranthes (rain lilies). Zephyranthes are unobtrusive, summer-flowering bulbs that can fit in any garden, with a flower color ranging from yellow to white to pink. The great thing about zephyranthes is the lack of large foliage that often accompanies many other spring-flowering bulbs, so site them in the front of the border, or in a rock garden to be best appreciated.
Zephyranthes are one of our specialty collections at Juniper Level Botanic Garden, with 25 species and 257 unique clones. Here are a few of the zephyranthes blooming this morning in our alpine berm. You can view our entire zephyranthes photo gallery here.