Saturday, November 22, 2014

The mystery maidenhair fern

Adiantum sp.Adiantum sp., still green after 20° F

Winter has come a bit early this year, with a low temperature of 20° F (-6.6° C) a few nights ago, and several more nights in the low 20's.  It's very unusual to have temperatures this cold before mid-December.  Yet among all the brown and crispy frozen foliage, one bit of bright green still stands out: a maidenhair fern (Adiantum sp.).

Saturday, November 15, 2014

Garden bloggers bloom day: November 2014

Washington Monument

Despite a few evening clouds, it was cold and clear last night in Washington, DC and we finally got our first good freeze of the season.  I've had a couple of very light frosts already, when overnight lows were in the 30's, but without any damage to my plants.  Last night was the first time it went down to the freezing point, 32 degrees F (0 C), or perhaps slightly lower.  When I went out this morning to survey the damage the first thing I noticed was the sickly sweet smell of frostbitten vegetation.  That's the part I always forget.

Tuesday, November 11, 2014

Beyond Begonia grandis: new hardy begonias

Begonia grandis
Begonia grandis, white-flowered form

Many gardeners are familiar with Begonia grandis (a.k.a. B. discolor, B. evansiana, B. sinensis), a tuberous species from China commonly known as the "hardy begonia".  The name is well-earned: this truly is the hardiest species in a huge but mostly tropical and subtropical genus, going dormant in the winter and able to survive freezing temperatures into zone 6.  But for a very long time, the most exciting news about hardy begonias was that they came in white as well as pink.  In a genus with so many flashy plants, neither the foliage nor the flowers of B. grandis are terribly exciting.  The leaves are handsome enough, and the pink or white flowers are nice coming so late in the season... and darn it, it's a hardy begonia.  But hardiness is mostly what it has going for it, and is offset by the thing being downright weedy.  It produces little aerial bulbils that act like seeds, dropping all over to produce a steadily-growing colony that will eventually crowd out smaller and slower-growing plants.

Saturday, November 8, 2014

Hooray for the urban heat island

In for the evening
Begonias, in for the evening

Last night, I piled some of my begonias into a plant tray and brought them indoors for safekeeping.  There was a forecast of near-freezing temperatures and near-certainty of frost, but this time of year I always gamble a bit, bringing in just my most tender or irreplaceable plants, and leaving the rest to their fates.  We may be well into November but I'm not quite ready yet for the annual routine of lugging potted plants in, and putting sheets over the plants I can't bring in, every time a frost is predicted.  It's just too damn much work (have I mentioned before how lazy I am?).

Saturday, November 1, 2014

Begonias and temperature

Begonia sizemoreae flower closeup
Begonia sizemoreae (female flowers)

With temperatures dropping and the growing season coming to an end, I was going through some old photos for a blog post I'm putting together and came across some photos of a plant I no longer grow, Begonia sizemoreae.  This recently described species from northern Vietnam is closely related to B. rex (and according to some botanists the two belong to the same species).  I picked up this plant on a whim at a local begonia society show and grew it for a few years; while it didn't turn out to be the least bit hardy, it did give me some interesting hybrids that survived a couple of warm winters in the ground and encouraged me to attempt more crosses.

Thursday, October 30, 2014

Throwback Thursday: Halloween 2003

Throwback Thursday: Halloween 2003
Halloween, 2003

Not much to say today, just going through some old photos, looking for inspiration for carving this year's jack-o-lanterns and came across these guys I did in 2003.  Below is a jack-o-lantern I carved in an uncharacteristically patriotic mood for Halloween 2001, a rather somber time when nobody felt like celebrating and we only got 3 or 4 trick-or-treaters all night.

Happy Halloween!

Throwback Thursday: Halloween 2001
Halloween, 2001

Sunday, October 26, 2014

Smithsonian Gardens, part 3: Enid A. Haupt Garden

Smithsonian Castle
Parterre garden in front of the Smithsonian Castle

[Third in a series on Smithsonian Gardens; introduction here, part 1 here, part 2 here]

I took a walk through the Smithsonian's Enid A. Haupt Garden a few days ago and found it still going strong in mid-October.  That stroll reminded me that I still had a set of photos from July to upload that I took for a series of blog posts on Smithsonian Gardens.  I wrote up the Butterfly Habitat and Urban Bird Habitat Gardens, and the Mary Livingston Ripley Garden, but I kept putting off the Haupt Garden.  Nestled between Independence Avenue, the Smithsonian "Castle", the Freer Gallery and the Arts and Industries Building, this is the largest of the Smithsonian's gardens on the National Mall, and I'll admit I felt a bit intimidated!  The Haupt Garden is actually a series of connected gardens that contrast strongly in character, altogether covering 4 acres.  Most of this is planted over the Smithsonian Quadrangle or "Quad", a large underground complex of office and museum space.  The Haupt Garden is thus a giant roof garden, and although it was installed only after the Quad was completed in 1985, it looks like it's been there since the Castle itself was built.