DryStoneGarden

Trudy the Corpse Flower

You can catch flies with honey, but you can catch even more with the stench of carrion. I went to see Trudy the corpse flower blooming at the UC Botanical Garden in Berkeley. Corpse flowers (Amorphophallus titanum) earn that lovely goth name by exuding the stench of rotting meat to attract flies to act as pollinators, and they’re not shy about it. The smell is potent, Trudy filed the UC glass house with the smell of roadkill goat, and it’s effective, too; there were ten or twenty flies buzzing around it while I was there, and apparently there’s a bigger swarm in the morning when the smell is strongest. And it’s all a con job on the flies; they lay their eggs thinking there will be food for their offspring, but the children hatch and starve without a genuine carcass to feed on.

The flower is six feet tall and impressive even without the stench. Corpse flowers are from Malaysia and they take seven or more years to bloom, waiting until the plant’s corm weighs thirty pounds or more. The bloom, which is actually a collection of little flowers, has a claim as the biggest inflorescence in the world, and the spadix (the big spike sticking up in the middle) generates heat, up to twenty degrees warmer than the ambient temperature. Someone at the garden has a sensor set up to test if the plant gives off a biomagnetic field the way humans and animals do.

This particular corpse flower, Trudy, first bloomed in 2005 at age twelve, and then waited four years to bloom again, making this her second time blooming, though the garden has others which bloomed while Trudy was resting. The bloom will only last a couple of days before it gets pollinated and collapses. The garden’s website has tons of photos and regular updates. For years, we’ve been getting emails every time one of them blooms, but this was the first time I went by to check it out, and, I gotta say, it was pretty cool. There are seedlings for sale if you want to pay thirty dollars for an indoor plant that requires constant watering and feeding and smells like carrion when it blooms. Photos of nice-smelling flowers are below. Read the rest of this entry »

Brodiaea

I’m a pretty loyal California native planter, but I had my confidence in one of the native bulbs, Brodiaea, shaken recently. We’ve been planting “Corrina” and “Queen Fabiola” for a couple of years, and they’re good small bulbs for our area — they have lovely blue flowers, they don’t take much space, and they don’t require any irrigation, you just fall-plant and walk away. But then a friend of mine said they looked like Agapanthus. Ouch.

agapanthus

That might not sound like a big deal to non-Californians, but around here agapanthus is the omnipresent strip-mall/sub-division/highway-median plant. Plenty of gardeners from other areas seem to like it — for instance, Garden Design magazine recently featured a French garden named Le Jardin Agapanthique, which to me is like naming it the Privet Garden — but it gets no love here. The flower is okay, I guess, but the foliage is too glossy for our landscape; it looks plastic and fake next to the more silver and gray foliage of other low water plants. I sort of respect the plant’s bomb-proof toughness — I once dug a bunch out of the ground and dumped it all in a pile in the sun in the middle of summer and three weeks later it was still blooming — but I’ve demoed a lot of it, and I find that it’s always heavy, it’s always full of snails, and it always leaves behind nasty wormlike white roots. My apologies to any agapanthus gardeners out there, but I don’t like it.

So it’s kind of disturbing to think that Brodiaea resembles agapanthus. Do other people see the similarity? There’s a photo of the Brodiaea foliage below, and, upon reflection, the leaves are actually kind of glossy, and the fact that they flop over and then turn brown doesn’t sound like much of an improvement over the agapanthus. But Brodiaeas are pretty. Maybe I like agapanthus more than I admit? I’ll still plant the Brodiaea — the Van Engelen catalogue just came, 100 bulbs for $10, such a deal — I just think I’ll have a faint touch of sheepishness when I see it in our gardens for a while. Read the rest of this entry »

Sidalcea malviflora, checkerbloom

Our Sidalcea malviflora (checkerbloom), grown from seed, surprised us when the different plants put out different shades of flowers. They’re just about done blooming for the year. We don’t water them, so they’ll go dormant and disappear at some point and then come back with the rains.

Paeonia californica, California peony

The California peony is blooming at the Regional Parks Botanic Garden at Tilden in Berkeley. I’d never seen one blooming before. To quote Las Pilitas, “You need perfect drainage, a very green thumb, and luck with this one.”

Paeonia californica, California peony

Deborah Small’s Ethnobotany Blog has a beautiful photo of one growing wild.

— Addendum —

California Peony going dormant

A photo of the peony going dormant in early July.

Allium unifolium

We’ve been starting to add California native bulbs to our home garden and our landscape plantings, and so far, Allium unifolium is one of our favorites. A lot of the native alliums require perfect drainage and a summer dry period and would be difficult to source even if you thought you could get the growing conditions right. A. unifolium, though, is easy to find and grow; we read that it’s supposedly the most clay tolerant of the alliums, and so far that’s been the case. Also, because it’s considered garden worthy (the Dutch like it) and not just for native purists, you can actually find it in sufficient quantities to make an impact in a large garden, where it will spread somewhat aggressively if it’s happy. It’s beginning to bloom in several of our gardens now.

Allium unifolium in our garden

We were recently at the Regional Parks Botanic Garden at Tilden for their native plant sale, and I took pictures of the alliums that were blooming. The bed’s aesthetic (three foot high bed of stone holding 4-12 inch high plants) is more for collectors than for casual visitors, but it has some interesting stuff, of which Allium crispum sounds like the best bet to try in a garden. The Pacific Bulb Society has a good info page for North American alliums. Far West Bulb Farm also has photos and info and might be a source for some of them. I put photos of four alliums and the raised bed below. Read the rest of this entry »

golden mummies & aphids

Please excuse the rather unpleasant photo. Aphids are gross, but golden mummies are one of the best things I ever learned about IPM.

We’ve had a couple of outbreaks of aphids this spring, first with the lupine when it put out a big flush of new growth and now on our kales as they begin to bolt. Golden mummies are the brownish, mummified carcasses of parasitized aphids; wasps lay their eggs in the aphids and the larva eat the aphids from the inside, leaving the dried husks. If you aren’t familiar with them, click on the photo and you should be able to see the difference. In the garden, another way to tell the difference is that aphids move and mummies don’t.

When you see an outbreak of aphids, the presence of golden mummies is one sign that natural predators are present. Count the aphids and golden mummies on a leaf, and, if the outbreak includes at least 10 percent golden mummies, the natural predators will deal with the outbreak for you. Spraying would kill the natural predators along with the aphids and therefore be counterproductive, though aiming a spray of water against the aphids to knock them off (which actually kills a large percentage of them, while not harming the beneficials) is okay if you want to speed the process. 

In the photo, I count 14 golden mummies (mostly on the right, but three in the population of aphids on the left) and estimate about 100 aphids, so our IPM is working. Our earlier outbreak on the lupine was the same way, and it resolved itself without intervention.

ryan 4/22