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.
Our mountain camellia (aka: Stewartia ovata) is in full flower this week at JLBG. Despite its reputation as being difficult to grow, our plant has reached 12′ tall after a decade in the ground. This native deciduous small tree can be found from Virginia south to Alabama, centered on the spine of the Appalachian mountains. Hardiness is Zone 5-8.
If you’ve been following our blog for a while, you’ll remember we wrote about this amazing native shrub/small tree last summer. Well, it’s cyrilla time again in the gardens at JLBG, when every branch of this amazing semi-evergreen erupts with racemes of small white flowers, inviting all insects in the neighborhood to stop by for happy hour. This standard form of Cyrilla racemiflora pictured below, usually matures in the 10′ to 12′ range with a spread that’s double the height. Although it is found in the wild growing in moist, sandy soils, it grows equally as well on clay soils, as long as droughty periods don’t extend too long.
We think the most exciting horticultural addition to the world of cyrillas is a dwarf, witches broom discovered by Georgia botanists, Ron Determann, and the late Tom Patrick. A witches broom is a dwarf mutation with very short internodes, most often associated with conifers. Ron allowed us to introduce this amazing plant, which he named in Tom’s memory, Cyrilla racemiflora ‘Tom Patrick’. The density of branching and size is quite amazing. Since this selection is so new, we aren’t really sure of a mature size, but we’re guessing about 6′ in height.
I first grew Korean celery for years for the flowers, never realizing it was an edible food crop…a first class edimental! I have a fascination for plants in the Apiaceae family, whose members include Angelica, Queen Anne’s Lace (Daucus), carrots (Daucus), celery (Apium), parsley (Petroselenium), etc. Not only are many of the family members attractive in flower, but they are supremely attractive to pollinators, especially wasps.
Not all of my Apiaceae experiments have turned out well. More often than not, members of the family are short-lived (monocarpic or biennial), while other are prolific seeders. One which has far exceeded my expectations is the Korean native, Dystaenia takesimana.
Dystaenia takesimana is an endangered native to Ulleung Island, where it’s known by the local name, Soembadi. Most likely, dystaenia is endangered because it was also used to feed livestock (pigs). Humans eat Korean celery mostly in late winter, when it can be eaten raw like celery, or boiled, tasting quite like spinach.
This amazing evergreen perennial puts on a show with 5′ tall stalks of white umbels, starting for us in early June. When flowering is complete, the stalks die back as the new basal foliage emerges. Unlike many members of the family, the attractive cutleaf basal foliage remains evergreen all winter. You’ll see this popping up soon in an upcoming Plant Delights catalog. We hope you enjoy this as much as we have.
A few weeks ago, we posted images of the flower spike of our Agave ovatifolia ‘Vanzie’ just beginning to spike. Now, the giant beast is in full flower. The first photo below is the plant with its full expanded stalk in full bud, just prior to opening. After that, each image shows the progression of the flower development.
Agaves are monocarpic, so those species like Agave ovatifolia that do not make offsets will die after flowering. Agave ovatifolia is, however, one of a handful of species that usually forms baby plantlets on the tip of flowers stalk after seed set.
First flowers just beginning to open
We set up our Little Giant ladder, which allows us to climb up, collect pollen and to make crosses with other agaves.
The lower flower clusters open first and flowering continues to progress each day moving higher up the stalk.
Climbing the ladder gives you a bird’s eye view of the amazing buds as they are ready to open…usually 200-300 per panicle.
Below is a half-open flower panicle. The pollen is ripe before the stigma is ready to receive pollen, so pollen can be easily gathered without worry of self pollination.
Below is a fully open flower panicle. Each panicle weighs 5-10 pounds. No wonder the stalk needs to be so sturdy. Once the temperature warms in the morning, the flowers are abuzz with pollinators…mostly bees.
Looking down from above the flower panicle makes a pretty crazy photo
Our intern Zoe is working with our volunteer agave curator, Vince Schneider to gather pollen and make crosses with other previously gathered agave pollen
I usually don’t climb this high…a fear of heights, but this photo opportunity was just too good to resist
One of our Paeonia ostii seedlings flowered well for the first time this year, and turned out to be semi-double flower instead of the typical single flowers. We’ll continue to observe it in future years and make sure the trait is stable, but if so, this could be a lovely addition to the world of hardy tree peonies that tolerate heat as well as cold.
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.
I wonder how many folks know, have grown, or have even seen Hypoxis hirsuta…one of our US native yellow star grasses. This little native is so odd, it’s genus was kicked out of every established plant family to which it was formerly assigned…most recently Iridaceae, prior to that, Amaryllidaceae, Leucojaceae, and and now shoved off to the side into its own family, Hypoxidaceae.
The seven species native to North American are only a fraction of the 100+ species worldwide, although Europe was completely left out when this ancient genus was distributed. Below is Hypoxis hirsuta at JLBG.
South Africa also has an abundance of Hypoxis…below is Hypoxis multiceps, in flower now at JLBG. Most of the South African species we have grown are far more showy in the garden that the US natives. Part sun seems to be ideal for all the hypoxis we’ve grown, despite where they originated.
It only took us five attempts to figure out how to successfully grow the North American native, Stanleya pinnata. For those who haven’t met Stanleya pinnata, it’s a native woody perennial from the Westernmost States (North Dakota west to Southern California), so it really doesn’t find the rainy southeastern US to its liking. After several siting failures (learning experiences), we have finally found a location where it is thriving, a dry sloped berm in partial shade.
Stanleya was named after Lord Earl Smith-Stanley, The English 13th Earl of Derby (1775-1851) , who was quite a naturalist and president of the Linnean Society. This Lord Stanley wasn’t the only member of the Stanley family to have important items named in his honor. The NHL Ice Hockey trophy, the Stanly Cup, is named after his relative Lord Frederick Arthur Stanley (1841-1908), who was the son of Lord Edward Smith-Stanley, The 14th Earl of Derby, so it’s all in the family…Lord have mercy.
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.
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.
We’ve been working on upgrading many of the temporary gates throughout the garden, our first few, which went in this year are all designed by NC sculptor Jim Gallucci, from photos we took in the JLBG Gardens. We all need more art in our gardens…Enjoy!
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.
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.
Looking particularly good this week is one of the Southeast US (NC to Texas) native water orchids, Habenaria repens. This gem flowers through most of the growing season, and hasn’t slowed down as we enter November. Water spider orchid can grow both as a marginal or as a true aquatic. Our plant is growing in one of our crevice garden seeps. We’re working to get this really cool native propagated and available in the future.
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.
Because we’ve had three consecutive mild winters, we’ve had some survivors that probably wouldn’t have made it through a normal winter. One of those plants is Callistemon viminalis ‘Light Show’, which is looking really superb this fall. Perhaps this year, we’ll get back to our more normal winter low temperatures of 5-10F, but in the meantime, we’ll enjoy these amazing trial plants.
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.
Tis the season for prickly pear harvest. Many of our early ripening prickly pears are beginning to change from green to red, providing a lovely feature in the fall garden. Here is our clump of Opuntia pyrocarpa this week. We hope everyone’s prickly pear is growing well from our giant prickly pear pad giveaway at our annual Summer Open Nursery and Garden.
We were so thrilled when the Japanese began hybridizing fuchsias to tolerate hot, humid summers, that we did mental backflips. Over two decades later, these amazing plants still thrill us with both their tolerance of our harsh summers and winters. Here’s a photo of Fuchsia ‘Sanihanf’ in the garden today. Good siting (part sun and good drainage) is still important for success.
A new hybrid that just been amazing in our garden this summer is Origanum ‘Drops of Jupiter’. This Walters Garden introduction is the ultimate edimental…a cross of the gold-leaf culinary oregano, Origanum vulgare, with the flowering Origanum laevigatum. The result is an amazing flowering plant with incredibly fragrant golden foliage. Here is our plant at JLBG putting on quite a show.
We’ve written before about plants that get much larger than we are told in the catalog descriptions. Well, our latest example is Buddleia ‘Sleeping Beauty’, a hybrid of Buddleia lindleyana and Buddleia davidii. In two short years in the garden, it became a monster, reaching a 7′ tall x 12′ wide with no sign of slowing down. It was quite lovely and floriferous, but has now become a welcome member of our compost pile…sigh
Our plants of Hibiscus syriacus ‘Capra’ are worthy of a photo share this week. This is the best of the variegated leaf rose of sharon’s we’ve trialed, and so far, it been sterile, which is a requirement for any rose of sharon to remain in our garden.
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.
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.
This is one of the rare summers we actually got flowers on Amaryllis belladonna in the gardens at JLBG. The only problem is that they aren’t really Amaryllis belladonna. This poor South African native has suffered a series of nomenclatural mix ups over the last 250 years, that sadly continues today.
First was the battle over which plant really belongs to the genus name, amaryllis. The mix-up started with the grandfather of modern taxonomy, Carl Linnaeus, when he published the genus name Amaryllis in 1753. In his initial publication, Linnaeus applied the name amaryllis to a group of plants, which later turned out to include at least five different genera; amaryllis, nerine, zephyranthes, sprekelia, and sternbergia. A few years later in 1819, botanist William Herbert and others tried to clean up the mess using Linnaeus’s notes, and in doing so, assigned the genus name amaryllis to the solitary South African species, Amaryllis belladonna, which had been in Western cultivation since 1633.
Fast forward 119 years to 1938, when taxonomist Cornelius Uphof upset the proverbial apple cart when he published a paper in which he declared that the assignment of the name amaryllis for the South Aftrican plant was against Linnaeus’s wishes, since it was clear to Uphof that Linnaeus intended the genus Amaryllis to be applied to the American genus, Hippeastrum. Uphof’s paper renamed the American genus Hippeastrum to Amaryllis and the South African Amaryllis belladonna became Callicore rosea. This caused quite a taxonomic uproar which would continue for another 50 years.
The following year, 1939, taxonomist Joseph Sealy dug deeper into the original amaryllis name mix-up, and found it impossible to determine which plant Linnaeus intended to bestow with the genus name, Amaryllis, since most of Linnaeus’s original description referenced the South African plant, and only one small part referenced the American plant. Consequently, Sealy left the name amaryllis to apply to the solitary Amaryllis belladonna, and not to the much larger genus Hippeastrum.
The battle was far from over, and in fact, it turned into a war, led by American taxonomist Dr. Hamilton Traub, who from 1949 until his death in 1983, was defiant that the genus name amaryllis should instead apply to the American hippeastrums. Finally, in 1987, after Traub’s death, the International Botanical Congress confirmed the assignment of the name amaryllis to the South African species. Despite this resolution to 250 years of wrangling, most gardeners still refer to the plants that they grow widely in homes and gardens for their large flowers as amaryllis and not the proper name, hippeastrum.
One would hope that the 1987 decision would be the end of the mess, but not so fast…there was yet another taxonomic snafu. Amaryllis belladonna is a plant which is widely grown throughout California, where it thrives and flowers annually. But, is it really Amaryllis belladonna? While it’s certainly not a hippeastrum, the answer is no. To solve this mix-up, let’s step back a few years, to 1841, when Australian plantsman John Bidwill, first crossed Amaryllis belladonna with another African relative, brunsvigia, creating a bi-generic hybrid that would become known as x Amargyia parkeri. Because x Amargyia parkeri had more flowers, a more radial flower head, and better vigor, it gradually replaced true Amaryllis belladonna in cultivation, especially in California. I chatted with Californian Bill Welch (Bill the Bulb Baron), the largest grower/breeder of Amaryllis belladonna, prior to his untimely death in 2019. Bill admitted that everything he grew and sold as Amaryllis belladonna was actually the hybrid x Amargyia parkeri. Nurserymen have a bad habit of using incorrect names, because they realize that names which are familiar to customers always sell better.
If that’s not confusing enough, we should add that about half of the people who grow Lycoris x squamigera, a Zone 4 hardy bulb, also have their plants also labeled as Amaryllis belladonna, which is only winter hardy from Zone 8 south. We can thank several large mail order bulb catalogs who have no interest in either correct nomenclature or correct photography for that fiasco.
To quote the late Paul Harvey, “And now you know the rest of the story.”
So, do you see why plant taxonomist generally have little hair remaining?
Just caught this image of two North American (Northern Mexico) natives snuggled up closely together in the garden. At top is one of the spider lilies, Hymenocallis acutifolia, and wrapped around its ankles is Tradescantia pallida. We truly love Tradescantia pallida as a great combination-enhancing perennial that’s completely winter hardy here in Zone 7b.
Hemerocallis ‘Autumn Daffodil’ was introduced in 1949, but remains one of the most incredible daylilies we grow here at JLBG. The 3′ tall, branched, sturdy, upright stems are topped with an abundance of amazing highly fragrant yellow flowers starting in July.
The 7′ tall, and very floriferous Hedychium ‘Flaming Torch’ is looking quite stunning today in the garden. Although they are commonly called ginger lily, they are not a true lily (genus Lilium) or a true ginger plant (genus Zingiber). Hedychiums are prized for their summer and early fall floral shows atop bold-foliaged stalks. The inflorescences are quite exotic looking, resembling clusters of orchids. Slightly moist, rich garden soils and at least 1/2 day sun are best for these hardy tropical looking plants.
This amazing selection of pampas grass is looking particularly stunning at JLBG this summer. This plant has had quite a few false starts in commerce, but hopefully it’s getting a bit closer to being commercially available. We love its compact nature, although it does reach 7′ in height and 10′ wide.
Flowering this week at JLBG is the little-known, but marvelous Liriope longipedicellata ‘Grape Fizz’, thanks to the exploits of plantsman Darrell Probst. We find this tightly clumping species much more interesting than the more formal Liriope muscari or the weedy, spreading Liriope spicata, and will tolerate full sun to shade. By the way, pedicles are stalk-like structures connecting one plant part to another….in this case the flower stalk to the flowers, hence the specific epithet longipedicellata (long pedicles).
Our 4.5 year old clump of Rosmarinus ‘Arp’ has become ridiculously large, as rosemary does. When we moved to our new home, Anita requested one near the kitchen door, which was a no-brainer since I am in love with both her and her rosemary chicken. Rosmarius ‘Arp’ has been one of the most winter hardy of all rosemary cultivars we’ve trialed.
The Pipevine Swallowtail butterfly caterpillars are munching away on any aristolochia (pipevine) in sight. This week, their favorite in the garden is the stunning Aristolochia fimbriata. Nature has created a wonderful balance where the catepillars each just enough to survive and grow, but not enough to damage the plant, which will quickly re-flush.
Most folks think of yuccas as only sharp plants, but one that’s sharp without being sharp is our Southeast US native Yucca x recurvifolia…a naturally occurring hybrid between Yucca aloifolia and Yucca flaccida. Here is the clone Yucca x recurvifolia ‘Variegata’ in the gardens this week. Hardiness is Zone 6b/7a and south.
Looking nice this week is this cool selection of the North American (Northern Mexico) native Manfreda undulata. All commercial forms of this are heavily spotted, but we really love this this amazingly rippled-leaf form that we picked up at Bob Brown’s wonderful UK nursery a few years ago on a UK plant roundup trip. We’ve named this seedling, Manfreda ‘Crested Surf’. Hardiness should be from Zone 7b south.
Looking good this week is Nierembergia ‘Starry Eyes’. We have special memories watching our friend Carl Schoenfeld collect cuttings of this on our 2002 botanizing trip to Argentina. While it’s only reliably winter hardy to Zone 8, it’s a flowering machine during the summer. Here it is growing in our new crevice planting near our Open House welcome tent.
One of the plants we’ve grown and loved since the early days of JLBG is the amazing Lilium formosanum. We know without looking at a calendar that early/mid August has arrived, when the large fragrant flowers grace the garden, each perched atop 5-7′ tall stalks.
Here’s another oddity in the fabulous ginger genus, hedychium. First, Hedychium ellipticum requires shade, compared to most hedychiums that need sun to flower. Also, Hedychium ellipticum has pendant stalks, compared to the rigidly upright stalks of most more commonly grown ginger lilies. We love the elegant flower heads that adorn the garden in late July/early August. This photo is from the gardens at JLBG last week. Hardiness is Zone 7b south. Sadly, this is always a poor seller when offered by Plant Delights…perhaps people just need to see this in person to appreciate its exquisite beauty.
Just like the Broadway play, we love the plant, Boesenbergia hamiltonii. We acquired this gem from India in 2005 before it actually existed as a species. Back in the day, taxonomists who dealt only with dead, smashed plants, had created a rather large mess assigning the name Boesenbergia longiflora to every reasonably similar-looking ginger from India to Thailand. Finally, in 2013, a group of taxonomists looked at live specimens, only to discover that there were actually five different species involved in what was known as B. longiflora. Boesenbergia hamiltonii was one of those plants that came out of the divorce, which is great, since it’s the most winter hardy member of the clan. Here is our plant in light shade at JLBG, where it flowers for months during the summer.
Flowering now in the garden is the little-known Hedychium deceptum, which translates to deceived ginger. Discovered in 1922 by UK plantsman HJ Elwes of galanthus fame, it was initially identified as Hedychium greenii, until taxonomists realized that it was not the same as that taxon, so to commerate their confusion/deception, they coined the name Hedychium deceptum. Hedychium deceptum languished in a UK herbarium (where they keep dead, smashed plants) until it was recollected over 45 years later and named Hedychium rubrum. It was 46 more years before it was realized that there were two names for the same plant, with the earlier Hedychium deceptum having priority. We should have enough of this to share for the first time in the 2022 Plant Delights catalog. We don’t have much in the way of good hardiness data, so we’re guessing Zone 7b/8a.
Raise your hand if you’ve grown macbridea in the garden. Raise your hand if you’ve even heard of macbridea. This cute North American native (NC, SC, GA) bog mint has really impressed us in the garden. Flowering started in the last few weeks, and shows no sign of abating. We’re always cautious with mint relatives, but so far, this one has been very well behaved.
Lycoris (surprise or hurricane lillies) season has begun in earnest. We’ve already had 97 diffrerent clones to flower and the season is young. In a typical year, we usually flower between 300 and 400 different selected clones. Here are a few that have looked good so far. The top three are spring-leaf varieties, and as such, should be winter hardy in Zone 5. The bottom two are fall-leaf varieties and are winter hardy from Zone 7b south.
As a plant breeder, one of the cool things we get to do is observe the diversity that arises from a single cross. In some cases, the diversity shows up in the first generation (F1), while in other cases, the first set of offspring need to have sex with each other for the diversity in the offspring to reveal itself (Mendelian genetics). Fortunately, with agaves, we can see quite a bit of diversity in the F1 populations.
Below is a cross we call Agave x amourifolia, which is our cross of Agave ovatifolia, pseudoferox (salmiana var. ferox of Hort.), and lophantha. Here are three of our selected seedlings from that cross.
Plant #1 below is showing the large size of Agave x pseudoferox and the color of Agave ovatifolia (blue), with little visible influence of the narrow leaf, yellow-centered Agave lophantha.
Plant #2 below show more color influence from Agave x pseudoferox, but with the compact form influence of Agave ovatifolia.
Plant #3 below shows equal parts Agave x pseudoferox and ovatifolia, but also, what appears some leaf narrowing we would expect from Agave lophantha.
Below is Agave x flexiferox, created from a cross of the small Agave flexispina x the giant pseudoferox (salmiana var. ferox (Hort.). Plant #1 shows the small size of Agave flexispina, with the greenish coloration of Agave x pseudoferox.
Below, Agave x flexiferox ‘Megalodon’ shows the larger size and overall coloration from Agave x pseudoferox, with some added blue tones from Agave flexispina.
Below is Agave x victoferox, a cross of Agave victoriae-reginae x pseudoferox. Plant #1 below shows the form and size of Agave victoriae-reginae with the color of Agave x psedoferox.
Hybrid #2 below shows the teeth from Agave x psedoferox (victoriae-reginae has no teeth), and a size intermediate between the two parents.
Hybrid #3 below shows a larger size and more teeth due to more genes from Agave x pseudoferox. The teeth are much smaller because of the Agave victoriae-reginae genes. The splendid compact form also comes from the Agave x victoriae-reginae parent. This cross almost resembles the Northern Mexican Agave montana.
We hope this gives you a small peek into the world of plant breeding and the subsequent evaluation and selection process.
Our patch of Aloe cooperi has been beautiful in flower this summer, but every time I see it, my mind automatically associates it with rocker, Alice Cooper. I guess he made quite an impression on me as a child. Aloe cooperi is the hardiest of the aloes, first cousin to the better known Aloe vera. Aloe cooperi has been fine here in Zone 7b for decades, but we doubt it would be winter hardy much further north.
Pennisetum alopecuroides ‘Hush Puppy’ is a very vigorous fountain grass from the breeding program of Wayne Hanna at the University of Georgia, the result of their fountain grass sterilization program. Other introductions from this program include ‘Cayenne’, ‘Etouffee’, and ‘Jambalaya’.
In the garden Pennisetum ‘Hush Puppy’ forms a 3′ tall x 4′ wide clump that produces a succession of new plumes from early/mid-July (NC), and continuing to fall…an extended flowering season due to a lack of seed production.
It’s been a great month for crinum lilies in the garden, so here are a few of our more recent images. Crinums are native in the wild to Africa, North America, South America, Australia, and Southeast Asia. Some are winter hardy to Zone 7, while others are completely happy in Zone 6.
Sinningia ‘Pink Pockets’ was a Plant Delights/JLBG introduction in 2011…a hardy gesneriad that had thrived in our in ground trials. Here it is this week, planted in 2005 and still performing superbly in part sun. We love plants that stand the test of time in the garden.
This summer, two of our spiking clumps of Agave ovatifolia became dislodged from the ground during a violent thunderstorm. We wondered if they would still set viable seed despite being without roots, since the energy built up from 15 years of growth was still in the foliage. We made several crosses without having to set up a ladder and it appears that we’ve got good seed set. Nature is amazingly in its desire to survive.
We have a rather large collections of crinum lilies at JLBG and occasionally take time to make a few crosses. One of our recent selections is one we’ve named Crinum ‘Delerium’. Flowering again this week, this is a cross of Crinum variabile and Crinum bulbispermum, meaning it should be winter hardy in Zone 6. We re just dividing our original clump for the first time, so it will take a few years to get enough to share, but the process has begun.
Don’t let the name fool you, Hymenocallis caribaea ‘Tropical Giant’, as this North American native spider lily (Northern Mexico) has been hardy in our garden (zone 7b) without any protection since 2000. It’s flowering season has begun here at JLBG. Unlike some hymenocallis which require moist soils, this one will grow darn near anywhere. The new flowers open each evening, releasing a sweet fragrance that attracts night-pollinating moths.
Every year around July 4, we celebrate with our own horticultural fireworks show as the South African Scadoxus multiflorus ssp. katherine bursts into flower. Here are our plants at JLBG this week. This amazing bulb requires light shade to grow and thrive. Anyone whose woodland gardens suffers from the summer doldrums, would do well to include Katherine. Hardiness Zone 7b-10.
Flowering at JLBG this month is one of our favorite small trees, Cyrilla racemiflora…aka: swamp titi. Cyrilla racemiflora was a favorite tree of the late J.C. Raulston, who was constantly extolling its virtues to anyone who would listen. Swamp titi has a native range from coastal Delaware south and west to East Texas. The flowers, which have just recently started here are a favorite of the native bumblebees. Mature size is usually 10-12′ in height, and the contorted nature of the trunks usually produce a plant that is slightly wider than it is tall. Despite its southern origins in swamps, Cyrilla is well adapted to regular garden soils as far north as Zone 5. As far as the common name, we have no idea where “titi” originated. We’ve read theories that it may have been a corruption of TyTy, Georgia, or have some relation to Florida’s Titi Creek, but those are all unconfirmed.
Since we don’t have an open house in June, I wanted to share photos of Ammocharis corranica in flower now. This easy-to-grow amaryllid has thrived in the gardens at JLBG since 2004. First cousin to the better known genera like amaryllis, crinum, and lycoris, the South African ammocharis makes a very short, but incredibly showy bulb for a sunny garden spot.
Zephyranthes has the common name rain lily for a good reason…it has the charming habit of sending up new blooms after a summer rain (it would make an excellent rain garden plant). Zephyranthes (rain lilies) are small perennial bulbs that need to be sited in the front of the border, or in a rock garden to be appreciated.
With an abundance of days in the mid 90’s in July, August has started with an abundance of rain, from hurricane Isaias to afternoon thunderstorms. And the rain lilies are loving it! Here are some of our rain lily collection in our outdoor production beds. Let us know which ones appeal to you and we will try to get them in future catalog!
The genus Sinningia is a South American gesneriad (African violet and gloxinia relative). Hummingbirds and butterflies just love the tubular flowers of Sinningia, and several species including Sinningia tubiflora, are quite fragrant.
Sinningia flowers come in a wide array of colors from white, to yellow, pink, red and all shades in between. Sinningia species are drought-tolerant and heat loving…perfect for hummers and the southern garden. We hope you will join us in our excitement over the wonderful perennial sinningia.
Hurricane Hermine brought some much needed rain over the weekend. Not only were there some happy gardeners, but the rain lilies are loving it too. Here is a picture of Zephyranthes ‘Heart Throb’ in the garden with its bright 2″ reddish-pink flowers and contrasting white eye. At a mere 6″ this Heart Throb is a real show-stopper.
Rain lilies got their common name from their charming habit of producing new blooms after it rains. Rain lilies come in a variety of colors to coordinate with your garden’s palette. Plant rain lilies near the garden path where you can enjoy their beauty from mid summer up until fall. Be sure to come check out our wide selection of rain lilies this coming weekend, Sept. 9-11, during our fall open house, and you can take home your very own Heart Throb!
We’ve trialed many variegated forms of the lovely fall-flowering Salvia leucantha, and the only one we felt was good enough to share is Salvia leucantha ‘Eder’, which we’re pleased to offer this summer/fall for the first time. Where it isn’t winter hardy, it can easily be kept indoors in a cool room or porch.
I first met the Balkan native, Salvia nutans on a visit to Germany a few years ago and was gobstruck. How had I missed knowing and growing such amazing plant? We were able to track down seed, and to our surprise, it thrived even through our hot humid summers. For us, Salvia nutans flowers for several months in spring, but will continue longer if the summers are cooler. Did I mention how hard it is to photograph due to the abundance of feeding bumblebees?
Salvia ‘Newe Ya’ar’ is an odd name for an odd plant. This amazing sage was developed in Israel by breeders looking for the perfect culinary sage. In developing this, they also created a great garden plant for regions that have trouble growing the typical culinary sage, Saliva officinalis, due to our wet, humid summers. Members of the American Herb Society, who first imported this, raved about it amongst themselves, so we’re thrilled to finally be able to share. We don’t know how far north this has been trialed past our 7 degrees F here, so please let us know how its performed if you’ve tried it in colder regions.