Datura inoxia
Datura inoxia and Lindheimmer senna both in full bloom today.

September 15th, 2010
GBBD 201009: Sep 2010

Carol at May Dreams Gardens invites us to tell her what’s blooming in our gardens on the 15th of each month.

September 15, 2010

First fall is firmly entrenched in Austin. Given that it’s hot and humid, how do I know summer has surrendered? When I go outside, it doesn’t feel like I’ve stepped into an oven. When I walk down the street, the heat no longer radiates off the sidewalks and buildings. If I’m unable to water the potted plants one day, they don’t immediately die. The plants don’t wilt after ten minutes of direct sunlight. I’m pretty confident if a plant has made it this far it’s survived summer. (I did lose a couple of things the week before the rain: my potted sweet bay and my second ‘Ducher’ rose.)

I’m surprised by people who can’t feel the 15-degree difference between 107° and 92. I’m not going to say it’s pleasant outside but it is bearable. The air is thick with humidity and mosquitoes the result of Tropical Storm Hermine. After an August with only a trace of rain, Hermine answered our prayers with a vengeance. Zanthan Gardens got about 6 inches of rain in one day; other places in Austin got twice that. Flooding ensued. Eight people died (not all in Central Texas).

The oxblood lilies had their day living up to one of their other common names, hurricane lilies. Their fleeting beauty is all but faded today. So the prize for most striking display for GBBD is a toss-up between the Datura inoxia and the Lindheirmer senna. Some of the latter is over six feet tall. I’ve never seen it so tall. It grew a lot during the wet early summer months.

Lindheimers senna
Lindheimers senna

Gardens everywhere in Austin are brimming with Pride of Barbados this year. I’m seduced by the clear orange/yellow combination. Usually I’m not a fan of orange–it has to be the right flower. I’m glad I bought one. I also managed to grow a Pride of Barbados from seed which I planted a couple of years ago. It died back to the ground during the January 2010 freeze but now it is almost as big as the one I bought. It still hasn’t flowered.

Caesalpinia pulcherrima
Pride of Barbados

Both the golden thryallis plants are flowering as is the ‘Bangkok Yellow” canna which I had to rescue from pond-trashing raccoons. September is a very yellow month at Zanthan Gardens.

Galphimia glauca
Golden thryallis

The garlic chives started flowering very early this year and are still flowering. I planted them to complement the oxblood lilies but they don’t always flower together.

Allium tuberosum
Garlic chives

The vitex, the retama, and the desert willow have all surprised me with flowers today. Even the ‘Catawba’ crape myrtle is reblooming. The coral vine is also pretty happy, sprawling over twenty feet into my neighbor’s cedar elms. A couple of four o’clocks opened, too. The ‘Starry Eyes’ nierembergia has been a winner throughout the summer. I definitely want more.

Nierembergia gracilis
Nierembergia gracilis ‘Starry Eyes’

After the rain the garden is really just a collection of moderately managed wildflowers. The ruellia (all three types) have taken over the back yard. It’s very obliging. I don’t water or feed it and it grows and grows and grows. Another native plant, scarlet spiderling has been very aggressive this year. I don’t mind it in small doses but this year the plants are huge. The flowers, although a very pretty color, are tiny.

Boerhavia coccinea
scarlet spiderling

Another native plant that I try not to let get out of control but which has this year is this mallow (maybe Indian mallow, Abutilon incanum). This isn’t a very good photo…it makes it look like horseherb. The flower of the mallow is much larger than that of horseherb; it’s about the size of a penny. It’s also a pretty pale, flat buttery yellow. The mallow is an upright bushy plant; the horseherb is a sprawling ground cover.

mallow
mallow

Eventually I’ll get the garden all under control again. Or maybe not.