Six on Saturday #56 (May 23, 2020)

oxalis-articulata-2
Oxalis articulata

File under things that are counterintuitive:  the Raleigh/Durham, North Carolina area, which I perceive as being fairly sunny year-round,  receives more than twice the annual rainfall of notoriously damp London, England.  Part of the answer to this apparent conundrum is that London has more drizzly days (RDU has 109 days with some precipitation vs London’s 164).  Furthermore, we tend to have tropical-like afternoon thunderstorms during the summer, so many of those 109 rainy days are mostly sunny with thirty or forty minutes of heavy rain around the evening rush hour.

But sometimes we do have prolonged wet periods.  The freeze warning two weeks ago proved to be a false alarm, but this week has also been cooler than normal.  It was the cool of clouds and heavy rain, though, not the chill of dry Canadian air driven south.  Between Monday night and Friday morning, we received 6 inches (~15 cm) of rain.  The garden is looking particularly lush, but some plants are a bit floppy after growing like crazy for a week under heavy cloud cover.

Despite several of this week’s Six on Saturday originating in South America, all are garden plants that grow outside in the ground year round.  Most of these photos were taken last Saturday, before the heavy rain.  They’d look a lot more bedraggled if I photographed them today.

1. Cypella herbertii subsp. brevicristata

herbertii-brevicristata
Cypella herbertii subsp. brevicristata

Cypella herbertii is a small iris-relative from Argentina and Uruguay.  I have previously written about C. herbertii subsp. herbertii, and everything I wrote about culture applies to this subspecies, too.  Technically, the two subspecies are distinguished by the length of the stigma lobes, but the two forms that I grow also differ in their color:  my T. h. brevicristata has flowers of a clear yellow, while those of my T. h. herbertii are more orange.  This is the first year that my T. h. brevicristata has flowered, so it will be interesting to see if I get a mixture of colors among the volunteer seedlings in future years.

herbertii-herbertii
For comparison, here is Cypella herbertii subsp. herbertii

2. Hippeastrum x johnsonii (St. Joseph’s lily)

Hippeastrum-johnsonii

I featured this hybrid in my very first blog post.  At that time, I was growing it in my greenhouse, but I have since transplanted it to several places in the garden.  The best clump grows in full sun beside the bird bath, in soil that stays damp year round. H. x johnsonii,  a cross of H. reginae (southern Brazil) and H. vittatum (Peru), was the first artificial Hippeastrum hybrid. Its name commemorates Arthur Johnson, an English watchmaker and horticultural enthusiast who first made the cross at the end of the 18th century.  Surprisingly, given the origins of the parent species, H. x johnsonii is reputed to be among the most cold-hardy and vigorous of all Hippeastrum hybrids.

3. Clematis ‘Rooguchi’ (?)

rooguchi

The first flower on a Clematis that I planted last autumn.  I’m not entirely sure that it is correctly labeled.  The flower looks right, but Missouri Botanical Garden’s Plant Finder says that C. ‘Rooguchi’ is a non-vining hybrid lacking the twining petioles that help the vining varieties climb.  My plant definitely has twining petioles and is enthusiastically climbing some deer fencing stapled to the pergola.  Some websites agree with MoBot, while others say ‘Rooguchi’ is a climber like my plant.  Perhaps there are several different clones of the same cross all going under the same cultivar name?

4. Foundation plantings

Rosa_and_Phlomis

A two-for-one entry.  Along the south-facing foundation of our house, I planted a row of Rosa ‘Home Run’ and a clump of Phlomis fruticosa (Jerusalem sage) which is slowly spreading to surround the roses.  The Home Run rose is single-flowered (which I like) but lacks fragrance (which I do not).  Most importantly, though, it is very resistant to blights and mildews during hot, humid weather.

Home-run

P. fruticosa is marginally hardy here, so planting along the south foundation gives it sun in winter and protection from cold north and east winds.  Even so, it doesn’t flower very well and is sometimes damaged by snow and ice sliding off the roof. I do like the foliage, though, and the contrast with the glossy rose leaves.

Phlomis-fruticosa

5. Oxalis tetraphylla ‘Iron Cross’

Oxalis-tetraphylla-1

O. tetraphylla is from central Mexico and is one of the Oxalis species that grow from little corms.  I received it as a freebie in a bulb order five or six years ago and decide to chance growing it in the ground.  So far, it has been well-behaved in the garden, tolerating freezing temperatures and showing no tendency to spread and become a weed like some Oxalis.

Oxalis-tetraphylla-2

6. Oxalis articulata (syn. O. crassipes)

oxalis-articulata

I found this plant growing on our property when we first moved into our newly built house.  O. articulata is a South American species with a long history in cultivation, so I suspect that like the Gladiolus ‘Eno Orange’ it may have been planted by previous owners of the land and survived the intervening years when the property was left fallow.  I have since dug it up and distributed the knobbly little rhizomes to several places in my garden.  O. articulata can apparently become mildly invasive in some climates, but my plant seems to be sterile, at least in the absence of another clone, and shows no inclination to spread on its own.

The Propagator is the host of Six on Saturday.  Head over there to see his Six and find links to the blogs of other participants.

Dobo lily

Cyrtanthus_brachyscyphus

I’m particularly fond of orange flowers and flowers with tubular or bell-like form, so the Dobo lily, Cyrtanthus brachyscyphus…well, how could anyone not like this little bulb?

C. brachyscyphus is from South Africa, and its native range in the Eastern Cape and southern KwaZulu-Natal is bracketed by Port Elizabeth and Durban.  In nature, it is primarily a summer grower but may be evergreen if winters are mild [1].  In my greenhouse, it seems to prefer growing in the cooler late winter and early spring months–fresh new grass-like leaves are produced as soon as the days start getting longer in January, and it generally goes semi-dormant during the heat of summer.  This year, it has been flowering since early February, and new inflorescences are still appearing.   In common with other Cyrtanthus species, it seems to flower best when bulbs are crowded together in a pot, but overall it is much easier to grow and bloom than many of its congeners.  Although I grow it in my greenhouse, I suspect it would do equally well on a sunny windowsill.

Reference

1. Duncan, G., Jeppe, B., and Voight, L. (2016)  The Amaryllidaceae of Southern Africa, Umdaus Press, Pretoria, South Africa.

Six on Saturday #46 (August 3, 2019)

It has been more than two months since I managed to get a Six on Saturday post together, so this is a catch-up post:  six plants that have bloomed since S.O.S. #45.

1. Bletilla Yokohama ‘Kate’  (Flowered in late May)

Bletilla_Yokohama

As I previously posted, Bletilla species and hybrids are among the easiest of terrestrial orchids to grow.  B. Yokohama is a hybrid of B. striata and B. formosana, and it blooms about a month after B. striata in my garden.  The habitat of B. formosana in Taiwan and the Ryukyu Islands is subtropical, probably trending towards tropical, but B. Yokohama is fully hardy in my garden during the winter.  The new growth is tender, like that of B. striata, and must be protected from late frosts in spring.  The flowers have better form than those of B. striata, and the inflorescences are daintier.

2. Gardenia jasminoides (Hardy gardenia; flowered in early to mid June)

Gardenia

This evergreen shrub, with its fantastic fragrance, is a perennial favorite in southern gardens.  I have two different single-flowered clones which are efficiently cross-pollinated, presumably by moths, and produce lots of attractive red fruit in autumn.  Birds spread the seeds around, and I have started to find volunteer seedlings–a nice bonus that you won’t get if you grow the sterile double-flowered clones.

My plants were badly damaged by cold during the winter of 2017/2018, but they sprouted vigorously from their trimmed stumps, and it is hard now to see where they were cut.

2. Hippeastrum ‘Mead Strain’ (Garden Amaryllis; flowered in early June)

Hippeastrum Meads_strain

This Hippeastrum hybrid is the product of crosses made by Theodore Mead about 100 years ago.  Its background appears to include a large percentage of genes of the Bolivian species Hippeastrum vittatum, and similar hybrids often masquerade as that species in cultivation.  Bulbs of the Mead Strain are common heirloom plants in southern gardens, and a very similar clone is passed around by gardeners in my parent’s neighborhood in Texas.

4.  Lobelia laxiflora subsp. laxiflora ‘Candy Corn’ (Flowers intermittently all summer)

Lobelia Candy_Corng2
This Mexican Lobelia species is much more drought tolerant than our native L. cardinalis, so I grow it in a hot,sandy bed beside the driveway.  Its bloom season overlaps with that of L. cardinalis (see photo #3 here), and both species are visited by hummingbirds, but I haven’t found any volunteer hybrids yet.  I live in hope.

Lovelia Candy_Corn

5. Eucomis cf. zambesiaca (Pineapple lily; flowered in July)

Eucomis_zambesiaca

All of the Eucomis species and hybrids from southern Africa seem to be hardy in North Carolina, but many of them scorch and wilt in hot sun.  They require bright light to grow well, so this heat sensitivity creates a cultural conundrum.  This small variety sold as Eucomis autumnalis by the big bulb vendors is the most resistant to wilting of all the Eucomis that I have grown.  It looks very little like a true E. autumnalis that I bought from a specialist nursery, and I am fairly sure that it is actually E. zambesiaca, possibly the clone ‘White Dwarf.’

6.  Iris domestica (Blackberry lily; Currently flowering)

Iris Hello_Yellow
Iris domestica ‘Hello Yellow’

Iris domestica (formerly Belamcanda chinensis) is an old garden favorite, but most of the nurseries around here sell the newer all-yellow clones like ‘Hello Yellow.’  I really wanted the old fashioned wild-type orange form, too, and about two years ago I found a few plants growing wild along a power line cut.  I collected seed, and the resulting seedlings started flowering this summer, about 18 months after germination.

Iris_domestica

The Propagator is the host of Six on Saturday.  Head over there to see his Six and find links to the blogs of other participants.

Six on Saturday #42 (April 13, 2019)

This week, daytime temperatures have consistently reached the 70s to low 80s (~22-27 C), and spring is proceeding at full force. The dominant color in my garden is moving from yellow to red as the Narcissus wind down and wild columbine (Aquilegia canadensis) and azaleas take over. As the soil warms, new growth is emerging from subtropical bulbs like Crinum, Hippeastrum, and Scadoxus. Overhead, dogwoods are covered with white flowers, and delicate green leaves are emerging on the deciduous forest trees.

1.  Pollen

Pollen1
Clouds of pine pollen made North Carolina look like something out of a Wilfred Owen poem this week.

With all this new growth comes pollen, and this year’s pine and oak pollen storm has been particularly intense. Photos of the “pollenpocalypse” taken on Monday made it into the New York Times and CNN, but the pollen count actually peaked on Wednesday. That morning, I drove to work through murky yellow haze as clouds of pollen billowed out of the pine trees, and cars on the highway were followed by swirling trails of yellow dust. It was like a desert sandstorm composed entirely of allergenic protein. I am so thankful for Cetirizine.

Pollen2

Pollen3
Pollen floating on the lake beside my workplace.  This much pollen must add a significant nitrogen spike to the water when it rots.  I wonder what it contributes to my flowerbeds

In the garden, the grass was greenish yellow. The mulched flowerbeds were greenish yellow. The paths were greenish yellow. The sunlight was greenish yellow. It was like living in a dirty aquarium. Luckily, thunderstorms throughout the week temporarily cleared the air and allowed me to photograph flowers without a dusty yellow shroud.

Pollen4
My car’s windshield when I left work on Wednesday

2. Tulipa clusiana var chrysantha

Tulipa_chrysantha

Tulipa_chrysantha2

This species was featured in Six on Saturday #25 (Picture 4). A year later, the individual bulbs that I planted in autumn 2017 have multiplied into small clumps, and every stem is topped with a flower. After two years it is still early days, but I am becoming increasingly confident that these little tulips will successfully naturalize and become permanent fixtures in my garden.

3. Fritillaria meleagris (snake’s head fritillary)

Fritillaria_meleagris

Fritillaria meleagris has been less successful than T. clusiana. Over the past five years, the plants have been slowly disappearing, although those that remain still flower reliably. I think my mistake was planting them in a bed that is hot and dry in summer. I have since learned that these bulbs like to grow in cool, moist meadows. They aren’t expensive, so this autumn it might be time to buy some more and plant them where they’ll have more water.

4. Narcissus ‘Golden Bells’

Narcissus_Golden-Bells

This is almost the last of the Narcissus. Only N. poeticus still remains to flower this year, and those will be blooming in just a few days. N. ‘Golden Bells’ is a very vigorous cultivar, or possibly a hybrid, of N. bulbocodium, the hoop-petticoat Narcissus. It produces its wiry foliage in late winter and then waits so long to produce buds that every year I think that I have somehow missed the flowers.

5. Kerria japonica

Kerria_japonica

Having said that the dominant color is moving towards red, I see that I still have a lot of yellow-flowered plants in this week’s six. Kerria japonica is most often seen in its double-flowered ‘Pleniflora’ form with blooms that look like little yellow pom-poms. I much prefer this wild type with flowers that clearly show its membership in the rose family.

6. Arisaema sikokianum and Arisaema thunburgii subsp. urushima

sikokianum
Arisaema sikokianum
Arisaema_thunbergii
Arisaema thunbergii subsp. urushima

Two Asian jack-in-the-pulpits (or should that be jacks-in-the-pulpit?) are already blooming as our native Arisaema triphyllum are just breaking the surface of the soil. With the spadix modified into a club (A. sikokianum) or a whip-like tendril (A. thunbergii urushima), these species give you a some idea of the diversity in the genus.

There is so much going on in the garden this week, that I can’t resist one more photo.

Second 6. Maggots? Pupae?

Seemannia-rhizome

Actually, these are the dormant rhizomes of Seemannia nematanthodes (see #5). They’re just a tiny fraction of the number that I have exhumed from the bone-dry soil of pots stored in the crawl space of our house all winter. A few will go back into a pot with fresh soil, while the rest will be planted out in various flowerbeds.

The Propagator is the host of Six on Saturday.  Head over there to see his Six and find links to the blogs of other participants.