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.
Here’s an image taken this month of the wonderful Aucuba japonica ‘Limbata’. While most aucubas have yellow leaf specks, this old cultivar, first mentioned in historical literature in 1864, is sadly still quite unknown in gardens. That’s not too surprising, however, due to its slow production time as a commercial nursery crop. For dry shade in Zone 7a-9, this wonderful broadleaf evergreen is hard to beat.
Just out in the garden in early January and wanted to share photos of a few of our favorite evergreen ferns that would rather not be growing in the ground. In our garden, these are all growing within a few feet of each other.
Each of these ferns are epiphytes, which grow attached to a tree, or lithophytes, which grow attached to a rock. None of these ferns actually need soil to grow, since they get their food and water from the atmosphere and accumulated organic debris. Epiphytes, however, don’t get nutrients from their host plant…only physical support.
All epiphytic ferns thrive in hanging baskets, especially the spaghnum-lined type, since this most closely mimics their natural preferences. In our case, we are a bit colder than their native haunts, so for us, we force these ferns to reside in the ground since that gives them a bit more protection during severe winter temperatures. The key for epiphytes to survive in the ground is to have very loose, organic soils and always plant them on a steep slope.
Neolepisorus fortunei ‘Green Ribbons’ is our 2017 introduction of a Chinese native epiphytic fern.
Pyrrosia lingua ‘Hiryu’ is also an epiphytic fern, native to Japan.
Lastly is Polypodium vulgare ‘Ulleung Island’. Instead of being an epiphyte, this evergreen fern is a lithophyte. Lithophytes are classified as either epilithic (growing across the rock surface) or endolithic (growing in cracks or crevices). Since we found this in the wild, growing across the surface of a giant rock, this fern is an epilithic lithophyte…say that three times fast. This is our 1997 collection from an island, far off the coast of South Korea.
We hope you’ll explore these unique ferns in your garden.
Unless you’re a serious plant nerd, you’ve probably never heard of the plant genus, Urophysa. This small genus of only two species in the clematis family (Ranunculaceae) is only found growing in Karst cliff crevices in a few limited provinces of South Central China. In other words, they are quite rare. Urophysa henryi was originally named Isopyrum henryi, when it was thought to be a brother of our native Isopyrum biternatum. Urophysa is now considered most closely related to the famed half-columbine, Semiaquilegia adoxoides.
While the Chinese people mostly use Urophysa henryi as a medicinal treatment for bruises, etc., we prefer it as a winter-flowering gem in the rock garden. Here are our plants, which began flowering in our rock garden, just as we turned the page on the new year, 2022.
It’s scary how many people rely on the Internet for all their plant knowledge. Sure, you can find some helpful information on-line, but so much of what is there is simply repeated from one writer to the next, without anyone who has actually grown the plants, checking it for accuracy.
More and more important books and journals are gradually getting scanned and will one day be available on-line, but there remains no substitute for a good library. Here at JLBG, we have just completed a construction project, which doubled the size of our reference library. Although, we have nothing compared with the country’s large, well-funded horticultural/botanical libraries, we feel that we have assembled an important reference collection for a botanical garden our size. We have been very fortunate over the last year to inherit two nice reference books collections, one with a focus on plant introductions and exploration, which now can be shelved.
Our library focus is on reference books like Floras, as well as books that go in depth on particular plant groups and genera. General landscape design books with no significant historical value are not within our focus.
The file cabinets in the photos include 40 years of plant articles, pulled from various journals and important plant magazines from around the world. We think most people today would be shocked at the extraordinarily high level of horticulture practiced and written about during the last few hundred years.
Additionally, email discussions by the worlds top plant experts from the early days of on-line communications are also preserved. Many of these experts are now deceased, but their plant knowledge and voices have been saved. All this information is filed by subject.
Also in our files are important plant catalogs, which are such an important historical record of what was being grown and sold in the past. I remember having lunch with the late English plantsman, Graham Stuart Thomas at his home, and the thing that he was most proud of was his extensive collection of significant plant catalogs.
So, if you run up on stacks of old catalogs, historical plant magazines, or plant reference books, don’t hesitate to check with us before sending them to the recycle bin.
We always love it when unexpected garden hookups yield unexpected results, and such was the case recently when, under the cover of darkness, two of our holly ferns took a liking to each other. The result of this conjugal interlude is our first hybrid of Cyrtomium fortunei x Cyrtomium falcatum, that we’ve named Cyrtomium x fortatum Spornication. The habit of the hybrid is intermediate between both parents. Now, we’ve just got to figure out how to get it propagated in order to share.
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!
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.
It’s always interesting when we introduce a plant we think is an incredible addition to the garden, but virtually no one purchases it. Thank goodness, it doesn’t happen too often, but I’m reminded of one such case every day when I get home and admire our row of Agave x striateosa ‘Straight and Narrow’. This 2015 introduction was the first ever hybrid introduction of Agave bracteosa and Agave striata…both non-spiny century plants.
We couldn’t stand to throw out all the plants that didn’t sell, so we planted a row under a wide overhang along our home, where they never see any water, and are in shade for more than half the day. Here is one of those plants five years later, providing a texture and form that you simply can’t find with any other plants that tolerates those conditions.
We have a second seedling from the same cross, which we’ve never been able to share, but which flowered in 2015. Despite our best attempts, we were not able to get any seed set. Now, we await the first flowering of this clone in the hopes it is more fertile, so we can create some more unusual hybrids. Unlike most century plants, Agave striata is not monocarpic (doesn’t die after flowering), so we expect this hybrid to also live on in perpetuity after flowering. Winter hardiness is Zone 7b-10, at least.
Rohdea japonica ‘Shishi’ is looking lovely in the woodland garden. Rohdea ‘Shishi’ is a dwarf Japanese selection of the evergreen sacred lily with leaves that curl downward creating an unusual bird nest like appearance. Winter hardiness is Zone 6b-8b.