Deliciously Succulent – Bergeranthus

The South African (Eastern Cape) Bergeranthus vespertinus has been absolutely fabulous this late winter/spring season. Here it is growing in one of our rock gardens, where it is mostly protected from winter moisture. (Hardiness Zone 7b and warmer…at least)

Procurrent Groundcover

Flowering for the last few weeks is the late winter-flowering groundcover, Arabis procurrens. This Balkan native is a rather amazing evergreen groundcover in the cabbage (Brassicaceae) family. For those who never took Latin in school, procurrens = spreading. We grow this in a fairly dry spot in the garden where it gets 2-3 hours of sun each morning. Winter hardiness is Zone 3-8.

Sweet as Snow Cream

Edgeworthia chrysantha ‘Snow Cream’ is a 2000 Juniper Level Botanic Garden/Plant Delights introduction that has proven to be one of our most popular introductions. We made the original selection from a group of seed-grown plants, imported from China by Canada’s Piroche Plants in the late 1990s. We were drawn to this seedling because of the particularly large flowers, and large leaves that reminded us of a plumeria. Let me be clear that all Edgeworthia chrysantha seedlings are nice, but there is certainly a significant difference between flower and leaf sizes of seed-grown plants.

Below are photos from our winter open nursery and garden days this year, where our garden specimens never cease to amaze visitors with both its sweetly scented flowers and amazing floral show. Sadly, no matter how many we propagate, it never seems to be enough to meet the demand. A more open site results in a much better floral show. Hardiness is Zone 7a – 10b.

Aucuba…the overlooked winter shrub

It was great during our recent winter open house to see so many folks noticing the aucubas in the garden. Of course, they are hard to miss with our collection of over 140 different taxa. There are few evergreen plants better for year-round interest in dry shade than aucuba. Here is one of the most fascinating ones that’s in flower now in early March, Aucuba himalaica var. dolichophylla. This little-known, narrow-leaf species hails from 3,000′ elevation in several southern Chinese provinces. Winter hardiness Zone 7a-9b, and perhaps a bit colder.

The Elusive Red Witch Hazel

Flowering this week at JLBG is the amazing cherry red Hamamelis japonica ‘Tsukubana-kurenai’, also known as Shibamichi’s Red witch hazel. This gem was selected by legendary Japanese nurseryman, Akira Shibamichi, who also introduced Metasequoia ‘Ogon’. We were blessed to have Mr. Shibamichi visit JLBG back in the 1990s.

Cracking Crocus

Spring crocus are popping all through the garden, and it’s a challenge to photograph them all. We just happened to recently catch Crocus isauricus ‘Spring Beauty’ in full flower. Crocus isauricus (formerly Crocus biflorus ssp. isauricus) is an endemic to Southern Turkey in the region along the Mediterranean Sea.

Iris days of Winter

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.

Iris tuberosa

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.

Iris reticulata ‘Painted Lady’

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.

Iris unguicularis ‘Front Drive’
Iris unguicularis ‘Winter Echos’

Rad Windflower

Flowering now in the woodland garden is this rad little windflower, Anemone raddeana. This Asian native (China, Japan, Korea, and Russia) is a plant you’ll almost never see for sale. First, it flowers in the middle of winter when few people are thinking about gardening. Secondly, it’s ridiculously small, producing only a single white flower per stalk, which rises only a couple of inches from a slowly creeping rhizome. Third, it’s a spring ephemeral, meaning it will be dormant by the first of May. Finally, most people move through life too fast to even notice little gems like this. That said, if you like things like this, this is exactly the kind of thing you’ll really like. We certainly do!

Dainty Dirca

Few people know the fascinating native shrub, Dirca palustris. It’s little wonder it gets overshadowed by showier members of its family, Thymelaeaceae, which includes the likes of Daphne and Edgeworthia. Our 6′ tall plant is flowering alongside a large edgeworthia, and rarely gets noticed by visitors.

Dirca palustris, the plant, is actually widespread across Eastern North America, with a range from Canada to Florida, where it thrives in slightly moist, acidic soils. It’s often known as leatherwood, due to its thick, but very pliable branches, which have been used by Native Americans for making rope as well as baskets.

There are three other less poorly known dirca species…if that’s possible. We grow the rare Dirca decipiens from Kansas/Arkansas, but have not yet tried D. occidentalis from California, or D. mexicana from Mexico.

The genus takes its name from the Dirce in Greek Mythology, who bit the big one while tied to the horns of a bull….a truly sordid story. The specific epithet “palustris”, lacks the fascinating story of the genus, but only means that the plant naturally lives in very wet sites. Winter hardiness is Zone 3-9.

Cinnamon in the Garden

Ever since seeing cinnamon trees (Cinnamomum camphora) planted throughout the parking lot at Florida’s Disneyworld in the 1970s, we have been fascinated to see how many species of Cinnamon trees are winter hardy here in Zone 7b. Cinnamomum jensenianum, from Southern/South Central China has been one of the stars in our trials. Here is our 15 year old specimen looking great in mid-winter.

Cyclamen and Cyclawomen

Here are a couple of images this week from the garden of our older clumps of Cyclamen hederifolium. For garden areas that are dark and dry, where nothing else grows, cyclamen are your best bet. Of the plants below, one is at the base of a cryptomeria and the other at the base of a pine. Although they flower from August until Christmas, the winter foliage is just hard to beat. Hardiness is Zone 4a-8b.

Florida trilliums

When people think of trilliums, they usually think of the cold north, but states like Florida are also home to four species of trilliums which all thrive throughout the southeastern states. Here are two of the earliest species to flower in our garden.

The first is Trillium maculatum ‘Kanapaha Giant’ from Alachua County. This is consistently the earliest trillium to emerge and flower for us. This is followed close behind by Trillium underwoodii. Both of these are usually in flower by early February.

Trillium maulataum ‘Kanapaha Giant’
Trillium underwoodii ‘Dazzler’

Snowdroppin’

We’ll never be accused of being galanthophiles (folks who are hopelessly addicted to collecting galanthus cultivars), but we do love the genus, and are fascinated with these mostly winter-flowering bulbs. Here are a couple in full flower now at JLBG. These have a preference for slightly moist-to-average woodland conditions.

Galanthus ‘Sam Arnott’
Galanthus plicatus ‘Beth Chatto’

Burned baby, burned

With our recent 16 degree F winter temperatures, all of the cycas plants (sago palms) in the garden now have fried foliage. This foliage will not recover, but damage like this is fully expected in our climate, and not something that will damage the plants. Be sure to not remove the old damaged foliage this early, however, since cycads are programmed to shoot out new foliage 10-14 days after the old foliage is removed, and this is much too early for new foliage, with more cold weather likely on the way.

We like to remove the old foliage starting in mid-April, when it should be safe. As you can see in the second photo, the central crown is still in great shape, undamaged by the cold temperatures. We think the central crown is one of the most fascinating parts of a cycad, which shows its’ ancient lineage.

Ice n’ Roses Dilemma

Below are more of the Ice n’ Roses snow roses flowering now in the gardens at JLBG. These amazing sterile hybrids were created in Germany by the Heuger plant breeding company. They have proven fabulous in our trials, but are still often difficult to find due to the screwy production cycle.

Because these snow roses, as Heuger calls them, are clonal and sterile, they can only be commercially produced by tissue culture, which is all done overseas. The non-rooted microplants are shipped in sterile containers to the US, where they are received at rooting stations (nurseries capable of putting roots on these microplants).

Helleborus x glandorfensis ‘Ice n’ Roses Pink’

There are only three North American rooting stations used by Heuger, one in Canada, and one on each of the US coasts. Once the microplants have roots and have grown large enough, they are purchased by finish growers, who pot and grow them for 2-3 months before they are a saleable size.

For a finish grower or retail nursery to have plants available to sell in late winter or early spring, they would need to receive liners (small plants with roots) from the rooting stations in September/October. The problem is that these rooting stations usually get their unrooted microplants from overseas in fall, when their losses are less and the plants finish faster.

Helleborus x glandorfensis ‘Ice n’ Roses Red’

Consequently, these rooting stations only have plants available for the finish growers from February – April. This means that the finish grower and retailer will only have plants ready to sell at the beginning of summer, which is certainly not ideal unless you live in the northern tier of states or Canada.

The only option a finished grower has is to hold the plants through the summer and fall, to have them available in the late winter flowering season. This drives up the crop cost dramatically, since a nursery has an overhead cost per square foot per month of growing space. Until a change is dictated by the grower throughout the supply chain, it is unlikely that the supply will be able to keep up with the potential demand. Anyone think making plants available is easy?

Helleborus x glandorfensis ‘Ice n’ Roses White’

Arisarum in hiding

We were delighted to find a flower on our Arisarum simorrhinum in early February, tucked in a the base of a dwarf Chamaecyparis (false cypress). This little-grown Mediterranean native, dryland aroid is first cousin to the better known mouse plant, Arisarum proboscideum. This baby has been in the ground for 20 years, so slow is the operative word.

Arisarum simorrhinum

Rocking and Rolling in the Winter Garden

If you’ve visited JLBG, you know how much we love working with rocks, so we continue to find new areas to plant more. We’ve recently tackled two long overdue projects near the Mt. Michelle waterfall.

The first was re-working the Mt. Michelle watercourse we know as Mystic Creek (named after one of our late cats). When this was installed in 2003, we used concrete to form the water channel. Well, after 18 years, tree roots had their way with the concrete, which lost both the battle and the war.

After a fair amount of root excavation work, Jeremy and Nick installed a new rubber liner, with rocks along the edge. We’ll probably wait until spring to finish the replanting in order to avoid planting on top of something that was winter dormant. Below is the new rocked watercourse.

Phase 2 of the project was re-working an adjacent bed, where light levels had changed dramatically since it was installed in 1998. Originally a full sun bed, the shrubs on the west side have grown substantially, leaving us with a bed that only gets 3-4 hours of sun on one end, and a full shade area underneath the canopy.

Here, we raised the center of the bed, with more of Jeremy and Nick’s rock work, which was then filled with our on-site created compost. This created a visual barrier to much of the winding path that visitors use to get closer to the small plants, which are now tucked in the crevices.

One the back (west) side, Jeremy and Nick installed another small rock seating area, of which there are never enough.

There are a few more days of rock work to complete Phase 2, then we’ll start on Phase 3, which will rework the west face of Mt. Michelle, with more boulders to create additional planting pockets. We hope you’ll check out the progress at our upcoming winter open house.

Raising Rabieas

We have long loved small crevice-sized succulents, but have also killed far more than our share, due mostly to our wet, cold winters. The newest star in our trials is the South African, Rabiea albipuncta, a first cousin to the better known, Delosperma. We should mention, that new DNA research has actually suggested a name change to Nananthus vittatus would be more correct, so we’ll be re-tagging shortly.

This gift from Denver Botanic Garden plantsman extraordinaire, Panayoti Kelaidis, has thrived in the gardens since 2018. We actually tried this back in 2004, but our site simply didn’t drain well enough in winter. This image was taken here at JLBG on February 2 this year, which shows how insanely tolerant the flowers are of cold weather. We hope to make this available next year through Plant Delights Nursery. This gem forms a substantial caudex, and as such is highly prized by bonsai enthusiasts.

Rabiea albipuncta

Snowgaves

We’ve “enjoyed” frozen precipitation for three consecutive weekends this winter, with one producing a decent 3.5″ snow. There’s something magnetic about snow on century plants, that makes you grab your camera and snap away.

The white of the snow looks out of place on an agave, although it does wonders for accenting the architectural structure of the plant. We have worked for 35 years to identify and create agaves which are completely tolerant of such weather events. Below are a couple of our hybrids, created here at JLBG.

Agave x amourifolia
Agave x loferox

Early lenten rose

Every year, we grow thousands of lenten roses from our own seed collections in the garden. Most, we sell at our Winter Open Nursery and Garden as Helleborus x hybridus ‘Winter Delights’. All of our Winter Delights hellebores are hand selected by color after they flower. Every now and then, an incredibly unique form gets pulled for the gardens and here is one of those from a few years ago. This amazing plant has huge 3.5″ wide flowers, and was already in full flower by January 1. We hope everyone can visit our upcoming Winter Open House and see the amazing hellebore selections in the garden.

Helleborus x hybridus JLBG-133a

Winter Magnolias

This winter has been an amazing one at JLBG for the mid-winter flowering, evergreen magnolias. Formerly known as Michelia, there are several species from warm temperature Asian climates, which flower in the mid-winter. The plant in the top photo is our oldest specimen of Magnolia platypetala, and below is Magnolia macclurei…both planted in 1999, and in full flower in January. Obviously, we will loose open flowers if winter night temperatures drop too far below freezing, but the remainder of the flower buds usually open shortly after temperatures warm.

Also, the bright gold shrub in the first image is the original plant of our introduction, Illicium parviflorum ‘Florida Sunshine’…the plant from which all plants in the world were propagated. To the lower right is the Mediterranean native, Phlomis fruticosa ‘Miss Grace’. All in all, a lovely winter garden combination.

Ichang Winter

Another of the mid-winter flowering species of wild ginger is the Chinese Asarum ichangense. Here is a green leaf form of this easy-to-grow wild ginger in late January from the top. If you push aside the leaves, you’ll see the amazing floral show, hidden beneath. Winter hardiness in Zone 6b-8b, and possibly colder.

Asarum ichangense foliage
Asarum ichangense flowers

Mid-Winter Grotto

Here’s a mid-winter shot of our front grotto, showing what that section looks like during the most trying time of year. We try to emphasize to those building new gardens to treat gardens just like rooms of your home. Each should have a floor, ceiling, walls, furniture both large and small, and decorations. In the garden, we also try to emphasize year round interest, which in our area includes a good selection of evergreens. Our Winter Open Nursery and Garden Days coming up in a few weeks is a great time to get ideas and inspiration for your own garden. Below is a “before” picture of the same area.

JLBG grotto garden 2022

Below is the same shot when this section was begun in 1988.

JLBG grotto garden 1988

bloomin’ Ice n’ Roses

The Helleborus x gladorfensis hybrids, known as the “Ice n’ Roses” series have begun with the opening of Helleborus ‘Ice n’ Roses Barolo’. This is the earlies flowering and darkest clone in the series…just a shade darker than H. ‘Ice n’ Roses Red’. These are sterile hybrids derived from crossed of Helleborus niger with Helleborus x hybridus. Winter hardiness is Zone 5a-8b.

Helleborus x glandorfensis ‘Ice n’ Roses Barolo’

Artist’s Palette in Winter

Asarum hypogynum ‘Artist’s Palette’ is in full flower here at JLBG in late January. Despite being first published in 1915, this little-known species is very poorly represented in ex-situ plant collections worldwide. Our clone is a division from a wild plant we brought back from our 2008 botanical expedition to Taiwan. The foliage on this species is some of the largest in the entire genus. For us, Asarum hypogynum starts flowering in late summer and continues most of the winter. We are working to eventually be able to share this with other collectors. Hardiness is Zone 7b and warmer.

Asarum hypogynum ‘Artist’s Palette’
Asarum hypogynum ‘Artist’s Palette’

Winter Iris Parade

With a mild winter so far at JLBG, our numerous Iris unguicularis clones have been flowering beautifully. First is the clone Iris unguicularis ‘Francis Wolseley’ and then Iris unguicularis ‘Winter Echoes’. Colors in this species ranges from white to light blue to dark purple.

Iris unguicularis ‘Francis Wolseley’ beginning to open
Iris unguicularis ‘Francis Wolseley’ fully open
Iris unguicularis ‘Winter Echos’

High on Loquats

We truly love loquats…both to grow and consume. I first met Eriobotrya japonica in 1976 on a walk around the NC State campus with the late Dr. JC Raulston. I was amazed to see a mature 30’+ specimen growing against one of the campus buildings. I was determined to grow one of our own, so in the mid 1990s, we planted our first specimen here at JLBG.

Loquats, a Chinese native member of the rose family, makes a lovely small tree with large, evergreen foliage that resembles a corrugated Magnolia grandiflora. Another exceptional feature is the fragrant white flowers that start to open around Christmas. These are followed by delicious orange fruit in early spring, when winter temperatures don’t drop below the mid-teens F. Loquat foliage is also brewed as a tea, in addition to its numerous medicinal benefits. We have always found loquats to be much more winter hardy than most of the literature indicates. Our oldest specimen planted in 1997, has never experienced any winter damage. Hardiness is Zone 7b and warmer.

Perfume of the Princess

Quite a few really smart horticulturists told us we didn’t have a chance of succeeding with Daphne ‘Perfume Princess’ in our climate. We’ll, we’re almost 2 years in the ground with this New Zealand hybrid of Daphne bholua x Daphne odora. It’s already full of flowers, where it’s thriving in our crevice garden. In the sense of full disclosure, we’ve never been able to keep the Daphne bholua parent alive. Hardiness is Zone 7b and warmer to at least Zone 8b.

Cantab-ulous

In full flower now at JLBG is Mahonia x lindsayae ‘Cantab’, a hybrid of Mahonia japonica and the virtually unknown Mahonia siamensis. The intensely sweet fragrance is truly intoxicating…the strongest in the genus Mahonia. Sadly, you’ll rarely find this available for sale, since it’s somewhat gangly form doesn’t curry favor with most nursery growers. Winter hardiness is Zone 7b and warmer.

Tama Love

Camellia japonica ‘Tama no Ura’ has been fabulous this winter, both when the flowers are attached as well as when they just fall to the ground below. This amazing plant was actually discovered in the wilds of China, so no breeding was involved in its creation. It was subsequently introduced to horticulture in 1947 by the Nuccio family of California, who have since worked to create a series of similar flowered selections using these same genetics…all superb.

Christmas Rose

Helleborus niger ‘Jesko’, aka: Christmas rose, has been looking fabulous in the woodland garden since late December. We find light, open shade results in the best flowering.

Following right behind Helleborus niger in our garden is Helleborus x ballardiae ‘Cinnamon Snow’…a hybrid with Helleborus niger. This is a photo from New Year’s day.

Winter Onions

Starring in the rock garden in early December is the amazing Allium virgunculae ‘Alba’. This delightful dwarf allium to 8″ tall is similar to the better known and slower offsetting Japanese Allium thunbergii. Allium virgunculae, which typically has lavender flowers, hails from Japan’s far south Kyushu Island.

Hellebored yet?

We’ve made several hellebore posts, which are hard not to do, since they put on such a great winter show in the shade garden. Here are some of our selections of the fertile Helleborus x hybridus from the garden this week. If you made it to our winter open house, you were able to see these in person. If not, this is the best we can do until next winter, when we hope you’ll add us to your travel calendar.

Helleborus x hybridus is a mixed group from a wide range of parents including Helleborus orientalis, viridis, atrorubens, purpurescens, torquatus, and probably others. The flower color of each seedling varies based on what other colored hellebore is growing nearby in combination with the genes of it’s past lineages. In the wild, most flowers from the hellebore species listed above are pendulous, since upright or outright flowers often doesn’t bode well for successful fruit set in snowy winter climates. Through the years, breeders have made incredible progress raising the faces of the flowers, and in other cases simply colorizing the petal exterior on drooping forms. We salute the amazing hellebore breeders who keep pushing the limits of what we thought possible.

Sweet as Snow Cream

One of our most popular introductions is Edgeworthia ‘Snow Cream’…a plant we first selected back in 1995…long before more than a handful of gardeners had even heard of the Chinese native genus.

The late JC Raulston grew a plant, known then as Edgeworthia papyrifera, just outside of the arboretum lath house back in the early 1990s, when I was Curator of the Shade House. It was a fascinating plant that I remember watching each winter as the tight white buds burst into yellow flowers. There was little detectable floral fragrance, the plant never exceeded 3.5′ in height, and it suffered mightily in cold NC winters. I was still entranced by the plant and propagated several and planted them around the NC State Fairgrounds, where I worked full time.

An interesting back story is that a population of Edgeworthia papyrifera was discovered along Wolf Creek in Rabun County, Georgia back in 1971. Author Wilbur Duncan and other native plant researchers were shocked and puzzled to find this new plant growing in the wild until it was later determined to be escapees, probably circuitously from an earlier 1903 introduction by the USDA..

In June 1995, I was visiting plantsman Roger Gossler at his family nursery, Gossler Farms, in Oregon. Roger had just received a shipment of edgeworthia from Piroche Plants in Canada. Since I had tried in vain to track down Edgeworthia chrysantha, I was thrilled at my luck in finally finding it. Going through their batch of seed-grown plants, I chose one that had the largest foliage and best form, which we eventually named E. ‘Snow Cream’.

Edgeworthia chrysantha ‘Snow Cream’ – 1

For those who don’t know the Piroche Plants story, let me share. Back in the early 1990s, Canadian nurseryman/plantsman, Pierre Piroche was able to do what no one else had been able to manage and import quite a large number of very rare, commercially unobtainable plants, both woody and perennial from China. The story goes that Piroche first established a nursery in Bhutan that was able to import plants directly from China and then ship them on to Canada. Keen plant collectors around the country scooped up these gems until the Chinese import program sadly ended a couple of years later. Without his work, who knows if and when these superb forms of Edgeworthia chrysantha would have reached the US. A plantsman’s salute is in order for Pierre Piroche.

Edgeworthia taxonomy continues to be a moving target. The long known name Edgeworthia papyrifera was shot down when DNA studies showed that it was simply the diploid form of the triploid, and earlier published Edgeworthia chrysantha. Later, researchers dug up the yet earlier published name, Edgeworthia tomentosa (formerly Magnolia tomentosa)…a name which other researchers noted, is invalid since it was not correctly published.

Some folks have tried the orange flowered edgeworthia (‘Akebono’) that shows up in the market from time to time. Sadly, it’s the non-fragrant diploid form that has very little winter hardiness. We gave up on this in the mid-1990s after killing it our prerequisite three times. I am excited to share that a new orange-flowered form of the hardy fragrant form is finally poised to hit the market in the next few years.

Below are a few shots of Edgeworthia ‘Snow Cream’ at JLBG this week in it’s full blaze of glory. The daphne-like fragrance is akin to walking by a department store fragrance counter. Because of our consistently cool winter, flowering this year is about 2-3 weeks behind normal. We have found that edgeworthia grows equally as well in light shade or part sun…as long as the soil is well drained. Mature size seems to be in the 7-8′ range. To quote the late Paul Harvery…”Now you know the rest of the story.”

Edgeworthia chrysantha ‘Snow Cream’ – 2
Edgeworthia chrysantha ‘Snow Cream’ – 3
Edgeworthia chrysantha – new orange selection…top secret

Balkan Beauty

After showing many of the hybrid hellebores, here’s where they started. Flowering now at JLBG is one of our Balkan collections of the stunning Helleborus multifidus ssp. hercegovinus, which we grow for the foliage. This clump was started from a single division of a special plant we found in Montenegro…just after we crossed the border from Bosnia. The small green flowers are typical for the species. This is a slow-growing, summer-dormant species, which is why your rarely see it offered. If these are growin from garden seed, you get all kinds of hybrids, but almost never any with the stunning foliage of the true species.

If you’ve never read any of our plant expedition logs, here is a link to our Balkan travels where this gem was found.

What happened in Glandorf, thankfully didn’t stay in Glandorf

One of several breakthroughs in lenten rose breeding has been the development of the Helleborus x glandorfensis hybrids by the breeders at Germany’s Heuger hellebores. In the town of Glandorf, near the border with Netherlands, these amazing crosses of Helleborus x hybridus with Helleborus x ericsmithii (niger x lividus x argutifolius) were developed. While there are several H. x glandorfensis clones entering the market now, the first two were H. ‘Ice n Roses Red’ and ‘Ice n Roses White’, which you can see below. The special traits of the series are large, outfacing flowers, sterility, and extremely dark black-green foliage. We look forward to bring more of these excellent hybrids to markets as our trials dictate.

Helleborus x glandorfensis ‘Ice n Roses Red’ – our 4 year old clump
Helleborus x glandorfensis ‘Ice n Roses White’ – our 2 year old clump

Icebergs are breaking off, but Iburgs are breaking bad

Another recent dramatic improvement in hybrid lenten roses started at the small mom/pop nursery in England, RD plants. Here, Rodney David and Lynda Windsor created the first known hybrids of Hellleborus x ballardiae (niger x lividus) and Helleborus x hybridus. These revolutionary hybrids, previously thought impossible, are now known as Helleborus x iburgensis. They combine stunningly beautiful marbled foliage (from the H. lividus parent), with outfacing flowers (due to both H. lividus and H. niger), with a wide range of flower colors (due to Helleborus x hybridus). Because of the wide range of species used to create these gems, they have been effectively neutered so that no seedlings will be occurring in your garden. Below are a few from our gardens this winter.

Helleborus x iburgensis ‘Bayli’s Blush’
Helleborus x iburgensis ‘Charmer’
Helleborus x iburgensis ‘Cheryl’s Shine’
Helleborus x iburgensis ‘Dana’s Dulcet’
Helleborus x iburgensis ‘Dorothy’s Dawn’
Helleborus x iburgensis ‘Glenda’s Gloss’
Helleborus x iburgensis ‘Molly’s White’
Helleborus x iburgensis ‘Penny’s Pink’
Helleborus x iburgensis ‘Pippa’s Purple’

Ooops a Daisy

Many clonal plants we grow today are propagated by tissue culture…also known as micropropagation. In most cases, this involves taking tiny cuttings and growing them in a test tube filled with a goey algae product known as agar. Tissue culture allows many rare plants to be produced quickly and often inexpensively, which is great when it comes to making plants available far and wide. When vegatatively propagating plants through more conventional “macro” methods, it’s usually easy to notice when a mutation occurs. That’s not always the case in micropropagation since the plants are much smaller and don’t flower until they are grown out after leaving the lab. This is why daylily tissue culture has been disastrous. All kinds of floral mutation occur in the lab, only to be noticed years later after the plants are sold and grown out in home gardens.

All of the hellebores clones are micropropagated and so far, we have found almost no floral mutations…until this week. Below is a micropropagated double-flowered clone of the Christmas rose, Helleborus niger ‘Snow Frills’. The top image is the correct plant with two rows of petals. The bottom is a mutation we found in the garden in which the second row of petals is mutated. Honestly, we like the mutation better. As a plant producer, however, we don’t know what form we will receive in our next batch of plants from the lab, but that’s simply the nature of the process.

Helleborus niger ‘Snow Frills’
Helleborus niger ‘Snow Frills’ floral mutation.

We are the Champion…of the hellebore world

You know a breeder (Hueger) thinks a lot of their introduction when they give it the name ‘Champion’, and we can’t argue with their selection of this fabulous form of the sterile Helleborus x ericsmithii, flowering currently in the JLBG gardens.

It’s nothospecific namesake recognized the late English gardener/plant breeder, Eric Smith, at Buckshaw Gardens. Eric’s enduring claim to fame are the Hosta x tardiana series of blue-foliaged hostas, most notably Hosta ‘Halcyon’. Smith was also a prolific breeder of helleborus and one that he first pioneered in the early 1970s was Helleborus x ericsmithii. This is a group of sterile hybrids of Helleborus niger, lividus, and argutifolius. Each of the three parents have outfacing flowers, so all selections of Helleborus x ericsmithii were given no choice but to face outwards.

Helleborus x ballardiae – Helen’s legacy

The late English gardener, Helen Ballard, carried the title, Queen of the Hellebores from the 1960s until her death in the mid-1990s. Although she worked primarily with Helleborus x hybridus, she also was one of the first people to cross Helleborus niger with Helleborus lividus. Those crosses, formerly known as Helleborus x nigerliv, now officially bear Helen’s name as Helleborus x ballardiae. These mostly sterile hybrids with outfacing flowers are well represented in commerce with several amazing selections. A couple of our favorites that are looking exceptional in the garden now are Helleborus ‘Merlin’ and ‘Camelot’.

Helleborus x ballardiae ‘Camelot’
Helleborus x ballardiae ‘Merlin’

More Hardy Cyclamen

It’s hard to find a cyclamen we don’t love in the winter garden, but we are particularly enamoured with Cyclamen maritimum…formerly a member of the Cyclamen graecum complex. Learn more about growing hardy cyclamen.

Cyclamen maritimum (formerly C. graecum ssp. anatolicum)

Gardening for winter

Here are a couple of images of the gardens at JLBG to show how we garden for the winter months. By selecting and designing your garden for the winter season, it will automatically look great during the other three seasons.

Plants featured include hellebores, rohdea, ophiopogon (mondo grass), sabal palm, Illicium ‘Florida Sunshine’, and a number of conifers.
Here’s one of our woodland streams featuring Aucuba ‘Limbata’, carex, and rohdea. With proper plant selection, the garden in winter doesn’t have to be a lifeless canvas of mulch.

Winter Bloomers

Walking around the garden in mid-winter, we spotted a couple of nice woodies in full flower in addition to the winter blooming perennials. The first is one of many witch hazels we grow…in this case, Hamamelis ‘Orange Peel’.

Hamamelis ‘Orange Peel’

Growing nearby is Distylium buxifolium, also in full flower. D. buxifolium is a cousin to the better known D. myricoides. As best we can determine, it was not in cultivation in the US until a recent wild seed collection by Scott McMahan of the Atlanta Botanical Garden. Our plant is 3 years old from seed and measures 3′ tall x 10′ wide.

Distylium buxifolium in flower

Distylium buxifolium flowers closeup

Raining in Winter Open Nursery & Garden

Day 2 of our Winter Open Nursery & Garden Days…

JLBG Intern Frank Xu in the garden.

Rain or Shine!

Our expert  staff are in the gardens and sales area to answer all your gardening questions.

Be sure to join us today at 10am for our free Gardening Unplugged Garden Chat series where our Grounds and Research supervisor, Jeremy Schmidt, will be discussing Berm Gardening, and at 2pm Amanda Wilkins, JLBG Garden Curator, explores what’s in a plant name and fascinating botanical trivia.

Hellebores blooming in the sales house. The sales houses are dry and bursting with color!

In keeping with the damp, cool, New England-like weather….Cousins Maine Lobster food truck will be here today from 11am-2pm. 

If you need to warm up a bit, you can stroll through the tropical house and dream of the warm spring and summer days ahead and begin designing your next planting project!

Canna ‘Orange Punch’

 

 

Explore, Shop, Refuel

2019 Winter Open Nursery & Garden Days

Visit Plant Delights Nursery at Juniper Level Botanic Garden during our winter open house starting Friday, February 22 through Sunday, February 24, and March 1-3. Click here for directions.

During each of our Winter Open Nursery & Garden weekends we welcome you to explore the winter wonders of Juniper Level Botanic Garden and attend our free garden chat series, Gardening Unplugged, where you interact with our expert staff discussing seasonally pertinent topics such as winter garden maintenance, hellebores, and asarum (wild gingers) in the garden.

You will also have the opportunity to shop the sales houses at Plant Delights Nursery and take home and abundance of rare and unique perennials, as well as exclusive PDN introductions available nowhere else.

After all this exploring, shopping, and enlightened horticultural engagement, take time to refuel with local food trucks that will be available during both weekends. Current schedule is as follows: