Our garden specimen of Acer palmatum ‘Geisha Gone Wild’ is looking quite fabulous. Not only is it great from a distance, but a closeup of the foliage is simply amazing. Our 10 year-old plant has reached 10′ in height.
Tag Archives: Japanese native
May as well be May bar ae
Flowering now in the garden is the stately Japanese jack-in-the-pulpit, Arisaema serratum var. mayebarae. This is one of many regional ecotypes of the large Arisaema serratum complex, which some authors designate at the species level. This 3′ tall specimen is always an eye-catcher. Hardiness is Zone 5b-8b.
Who Called a Cop-tis?
We love the miniature Coptis japonica var. dissecta in full seed now. This dwarf, evergreen, woodland-growing member of the Ranunculus family (Clematis, Helleborus), has small white flowers in the winter, but we adore the seriously cute seeds heads that are adorned in March and April. Not only is this Japanese endemic a cool garden plant, but it’s highly prized as a medicinal plant, thanks to chemicals harvested from its roots, which are used to treat an array of ailments, from infections to pain, dysentery, fevers, and much more. Hardiness Zone 5a-8b.
Takane worthy of Tik Tok
Looking absolutely marvelous in the garden now is the amazing Calanthe ‘Takane’. This Japanese seed strain is a group of hybrids between Calanthe sieboldii and Calanthe discolor. Below is a clonal strain we named Calanthe ‘Golden Treasure’. These thrive in the woodland garden with average soil moisture. The photo below is our 18 year old clump, started from a single 4″ pot, growing under a black walnut tree. Hardiness Zone 7a-9a.
We always get excited when the Osmunda regalis fronds begin to unfurl in the bog garden at JLBG. Here are some images from this week, showing the new fronds. The rosy emerging growth is the sterile part of the fern frond, while the green growth at the top is the fertile part, which will produce the spores (fern seed). Hardiness Zone 3a-9a.
Below is another clump nearby, that emerges about a week earlier, and as such, is further along in opening.
Below is our hybrid, Osmunda x japalis ‘King Kong’, a cross between the American native Osmunda regalis and the Japanese native, Osmunda japonica. Unlike the 4-5′ tall Osmunda regalis, Osmunda japonica is much smaller (to 3′ tall), emerges 1-2 weeks later, and has dimorphic fronds—the spores are on different stalks than the foliage. Our hybrid has dimorphic fronds like the O. japonica parent, emerges later, but is much larger to 7′ tall.
Pinus in the Garden: Smaller is better
Here are a couple of dwarf pines in garden that are looking particularly great in mid-winter.
The first is PInus strobus ‘Mini Twists’ is a dwarf seed-grown selection of our native white pine that matures at 6′ tall x 4′ wide. This is a 2005 introduction from Vermont conifer specialist, Greg Williams. Good drainage is a key to success with white pines in our hot, humid climate. Hardiness is Zone 3a-8a.
Below is Pinus thunbergii ‘Thunderhead’, a 1987 introduction of a selected seedling of Japanese black pine from Angelica Nurseries of Maryland. In 10 years, it reportedly will reach 15′ in height x 20′ in width. Although it’s known commercially as Pinus ‘Thunderhead’, that cultivar name was actually used six years prior for a different pine, and according to International nomenclatural rules, can only be used once per genus, so the correct name would become Pinus ‘Angelica’s Thunderhead’. Hardiness is Zone 6a-8b.
Snow Flash Berried
The variegated wide-leaf holly, Ilex latifolia ‘Snow Flash’ is loaded with berries and looking quite spectacular in the garden this month. We’ve shared cuttings with several nursery folks, so hopefully, this will be making its way into the market. The plant was originally brought to the US from Japan by plantsman Barry Yinger. Our specimen below is now 18 years old. Hardiness is Zone 6a-9b.
Jurrasic Park Thujopsis
We’ve long been a fan of the central Japan native conifer, Thujopsis dolobrata, which we’ve grown for decades. For those, who aren’t students of the Latin language, the ending -opsis, means “looks like”. When Thujopsis was formally named in 1894 by Franz von Siebold and Joseph Zuccarini, they chose a name that could be translated to “looks like the American genus, Thuja”.
On a 2012 trip to Joann Currier’s former Unique Plant Nursery in NC, we noticed a plant of Thujopsis that looked unlike any we’d seen. Since the genus only has a single species, the variant was either a mutation or odd seedling. The very thick, plastic-like foliage on this selection gives the appearance of a ploidy mutation (extra chromosomes).
The cutting they shared was rooted, and subsequently went in the ground here in 2013. A decade later, our plant is pictured below this month, topping out at 10′ in height. Joann originally got the plant from Randy Plante at Greener Visions Nursery, who got it from NC conifer nurseryman Geoff Driscoll, who got it from someone “up north”. That’s where the trail goes cold. We’ve shared cuttings with several NC nursery folks, in the hopes this amazing selection becomes more commercially available in the future.
Looking quite lovely atop our crevice garden is Osmanthus heterophyllus ‘Hariyama’. This incredibly heavily-spined seedling of Osmanthus ‘Sasaba’ was brought to the US by plantsman Ted Stephens, who acquired it from Ishiguro Nursery in Japan. Our 15 year old plant has topped 10′ in height. Earlier in the fall, it was adorned with small, fragrant white flowers. Despite the small congested foliage, this is not a small plant, but where an oriental specimen plant is needed, this is very special.
A Mound of Mitama
Cryptomeria is a monotypic genus (only one species) of conifer, native to Japan. Despite many reports that it hails from China, DNA has shown that these were brought from Japan and planted over 1000 years ago.
For over 40 years, we have been fascinated with the genus and have worked to collect as many cultivars as possible, currently 49 different ones in the garden. One of our long-time favorites is Cryptomeria japonica ‘Mitama’, an old Japanese dwarf selection that’s sold under the name ‘Globosa Nana’. Without any clipping, these retain a slightly informal green meatball shape, maturing at 6′ tall x 10′ wide. Below is our garden plant this week. Hardiness zone 5a to 9b.
Our 13 year old clump of the evergreen Japanese Asarum asperum is looking superb in the garden this week. Looks like it’s about time to divide this for the first time and start to build up stock so we can share in the future. Winter hardiness is Zone 6-9.
At the Coast with Holly
The typical holly fern, Cyrtomium falcatum, is considered fairly reliable in Zone 7b, but no further north. The oddball is the coastal form, which grows on the coast of both Japan and Korea. We received the plant shown below in 2005, as Cyrtomium falcatum var. maritimum, which our taxonomy staff tells me, isn’t a valid name. According to Patrick and Zac, the Japanese coastal material is correctly called Cyrtomium falcatum var. littorale, but there is no mention in the literature they’ve reviewed of the same coastal form occurring off Korea.
Other than the dwarf size, which is often seen in plants that grow in harsh coastal conditions, these weather-battered denizens adapt by developing thicker leaves and a denser habit. Additionally, this form is significantly more winter hardy than the typical material of Cyrtomium falcatum seen in the trade. We’ve always listed this dwarf form as a Zone 7a plant, but we wouldn’t be surprised at all if it’s also hardy in Zone 6. If you’ve been adventurous enough to try it, we’d love to hear from you. Our mature clumps below, photographed over Christmas, are now 8″ tall x 18″ wide.
This is a very good year for the annual winter fruit show on Rohdea japonica (sacred lily). The attractive berries remain until early March, when they begin to drop. Although seed from these cultivars do not come true, you’ll always end up with an interesting variety of offspring.
A Melting Pot of Carex
We’ve published blogs about a number of carex from our rather large collection (108 species) several times this year, but here are a few more that look great here in early December. We have been fortunate to be able to collect members of this amazing genus from around the world, all of which now reside happily here at JLBG. As you can imagine, the majority of our collections are US native species, but just like with Homo sapiens, we value diversity and consequently don’t profile or discriminate based on ethnicity or origin.
The first is the US native Carex austrolucorum. This is Jeremy’s collection, named Carex ‘Tennessee Mop Top’.,
Carex gentilis ‘Yushan’ is our collection from Taiwan, and the only fall-flowering carex we know. Duke Gardens has made stunning use of this in their magnificent Asian garden expansion.
Carex ‘Silk Tassel’ is a stunning selection of the Japanese Carex morrowii var. temnolepis, brought to the US back in the 1970s by plantsman Barry Yinger. We still view this as one of the finest carex we’ve ever grown. While it grows great in shade, it truly excels in full sun, where its narrow variegated leaves appear silver.
We love the fall-flowering show of Camellia sasanqua, that’s underway now at JLBG. Here are a few of our favorites, starting with the amazing Camellia sasanqua ‘Fall Fantasy’. This hybrid from the late Chapel Hill camellia guru, Cliff Parks is unlike anything we’ve seen both in number of flowers as well as the incredible double pink form.
Camellia sasanqua ‘Ginba’ is Japanese introduction with lovely frosted-tipped leaves. This is also a slower growing selection.
Camellia sasanqua ‘Leslie Ann’ is truly breathtaking. With a much more open habit, this cultivar is truly elegant. In form, it resembles a flowering cherry, far more than a camellia. This is an introduction from Alabama’s Ray Davis in 1960.
I’ll end up with another truly unique selection, also from the late Cliff Parks. Camellia sasanqua ‘William Lanier Hunt’ is the closest to blue flowers we’ve seen. Each pink flower has a blue cast that increases as the flowers age. This selection is named after the late NC plantsman of the same name.
Have you ever been seated by someone who exercised no self control when it came to their application of perfume to the point that they left you gasping for fresh air? Well, there’s a shrub with the same degree of insanely sweet scented flowers, Osmanthus heterophyllus ‘Kaori Hime’.
This fascinating Japanese selection of the Japanese/Korean/Taiwanese native shrub is renown for its tiny foliage as well as the multitude of tiny white flowers with an over-the-top perfume sweet fragrance. Our plant has been flowering for nearly a month…an incredible treat for the fall garden. Our 10 year-old specimens measure 7′ tall x 12′ wide…much larger than most on-line vendors indicate.
Fifty Shades of Green
We love the various shades of green displayed by the fascinating Fatsia japonica ‘Murakumo Nishiki’. This amazing Japanese selection of tree ivy is looking rather stunning in the garden this month. This is a slow-growing shrub, which should mature at 4′ tall x 6′ wide. There is a shortage of these in commerce currently, because of a problem with tissue culture lab production. Winter hardiness is Zone 7b-10b.
Slightly Deranged Hydrangeas
We love the genus Hydrangea, but are really fascinated by those at the far end of the family tree. While most hydrangeas flower in late spring, we actually have a couple flowering now we’d like to share.
The first is Hydrangea involucrata, a native to both Japan and Taiwan. The word “involucrata” indicates it has some serious involucres (the bracts surrounding the inflorescence). The first image shows the plant in bud, the second in full flower, and the third image is after the flower color has faded. All three stages are on display at once in the garden this week. They typically reach 6′ in height and width. Winter hardiness is Zone 6a-8b.
Hydrangea amamiohshimensis (below), from Japan’s southern Ryuku Islands, was once considered a hydrangea cousin, until a 23andMe test confirmed it was actually a true hydrangea. Prior to the test, it belonged to the genus Cardiandra, which was effectively a perennial hydrangea, dying back to the ground each fall like most perennials. It too is in full flower in the woodland garden this week. Perhaps now that it has a recognizable name, more folks will be willing to grow it. This is the only one of the four former cardiandra species that has survived in our climate.
Our 12 year-old stone oak, Lithocarpus glaber is looking fabulous this month, as it has come into full flower in early September. We love the stone oaks, which contrast to regular oaks in the genus, Quercus, by having upright insect-pollinated flowers, compared to wind-pollinated, drooping flowers in the genus Quercus, and by having exclusively evergreen foliage. Lithocarpus glaber is native to China, Japan, and Taiwan.
Looking particularly lovely in the late summer garden is Fatsia japonica ‘Murakumo Nishiki’. This irregularly gold variegated form of the typically solid green tree ivy is a star in the light shade garden. This evergreen gem is a great way to add a spot of color in the woodland garden year round. Hardiness is Zone 7b-10b.
One of our favorite broadleaf shrubs is undoubtedly Orixa japonica ‘Pearl Frost’. Orixa is a monotypic (one species) genus in the citrus (Rutaceae) family, that’s virtually unknown in US gardens.
We are particularly enamored with this superb variegated form, brought into the US by plantsman Barry Yinger. Orixa ‘Pearl Frost’ matures at 8′ tall x 6′ wide, and we have found it to thrive in both full sun to light shade, although full sun plants require more moisture.