Arroyo Seco is a street in Austin, so called because it meanders along each side of a dry canyon creek. Heavy rains turn the creek into a raging torrent, which carves a path through the rock, resulting in a small canyon. It's usually dry, hence the name Arroyo Seco, which is Spanish for dry canyon. For those people who live in canyons big enough to get lost in, bear with us as we use our imaginations to pretend our canyon is bigger than it is.

During the autumn of 2010, several neighbors and I did some guerilla gardening, spreading bluebonnet seeds along the edges of the canyon. There was a very poor showing last year because the weather didn't cooperate. Thankfully, we are past that drought now and are in a new wet period. I'm thinking this year will be more like 2007 than like 2011 weatherwise, but I'm not holding my breath. Fortunately, bluebonnet seeds will last for years, not sprouting until the weather is just right. So I thought I'd pay a visit to the canyon to see how many bluebonnets there are this year. It's still early in the blooming season, so things should get better from here unless mowers knock them down.

What do you know? There are bluebonnets -- and actually quite a few of them. They're mostly along the slopes on the inside of the canyon, although there are some on top, too. In some places, the other plants have grown so tall it's very difficult to see the bluebonnets.

How about a closer look at some of these other plants?

Yellow clover

An unusual, variegated coreopsis. I'm going to have to go back when the flowers open up to see what they look like. I was tempted to dig this one up and plant it in my garden, but I decided to leave it here for others to enjoy if they want.

Blue Eyed Grass at the bottom of the arroyo

Coreopsis and a small vetch

Evening primerose and horse herb

Sunflower and live oak catkins

Tradescantia

Vetch

Yellow clover-like plant

Bur oak seedlings are very common this year. I hope some of them will be left to grew up.

Here is a bur oak seedling growing in the side of the berm where erosion is occurring. I'm not sure how the plant got a foothold, but it did. I hope it survives. The large acorn is still attached at the base of the stem.

Speaking of erosion, we have a serious erosion problem in Arroyo Seco. Left to itself, the creek will meander from side to side, taking out more and more of the edges, until it undercuts the road. Floods deposit silt in the middle of the creek, and new flow diverts around it.

The trees planted alongside the creek are not terribly effective against erosion. Bur oaks have evolved to grow in deep, silty soils and send their roots deeper than many other species, but they're not fibrous enough to hold the soil.

Not only are we losing the soil, we're in danger of losing these trees, too.

Bald cypress trees have a completely different kind of roots. They have evolved in areas that regularly get inundated with water. In our part of the country, they are found along rivers and creeks. Surrounding the tree, the roots periodically send up knees. It's not completely understood what the function of these knees is, but in my opinion, one of the main functions is to hold on to rocks and soil. By carefully root pruning bald cypress trees planted along the creek, we should be able to control the flow the way we want it to go. Unlike smaller plants, which can be washed away completely, mature bald cypress trees are very large, and no flood going down the arroyo would be able to uproot one. Soil and rocks move around, but the roots of bald cypress trees remain anchored where they are allowed to grow. They catch debris, which in turn modifies the flow of the stream.

I think we should plant more bald cypress trees, and carefully take care of their root systems to guide the creek where we want it to go. It could meander when flow is slow. Root-controlled dams could create small ponds, and large, erosion-prone areas could be guided to not undercut the roadway.

When I checked my email prior to going home from work for the day, I saw a post about a swarm of bees by the IGA. This called for a detour. I went a block out of my normal way home taking Woodrow instead of Grover, so that I could drive my motorcycle through the parking lot to scope out the situation. It looked promising enough to return with my camera and get some pictures and maybe even some footage.

Swarming is a natural part of the honeybee life cycle. Most swarms occur during a short period in the spring when the queen leaves the hive in order to establish a new hive elsewhere. Some of the workers accompany the queen. Others stay behind to tend to the new queens that probably haven't hatched from their cells yet. Since the queen bee is heavy, the swarm generally stays close to the original hive. They remain in the swarm until scout bees return with exciting news about a prospective nesting site.

Here you see such a scout bee returning to the swarm.

Update: The bees were collected by a beekeeper shortly after this picture was taken.

A couple weeks ago I ordered some carnivorous plants from Cascade Carnivores. One of the items was described as Drosera sp "Lake Badgerup" gemmae. Stupid me, I didn't know what gemmae meant and assumed it was part of the name of the plant. It does look Latin, doesn't it? It didn't fit the binomial naming convention, but not all names do, and sometimes people depart from official names. Besides, it looks like there's a cultivar name stuck in there, too.

Some time later, when I got my package, I realized my mistake. Other plants I had ordered were carefully planted with sphagnum moss and put in ziplock bags. One very small ziplock bag, though, seemed to contain only a small filter, like a tissue you'd clean a pair of glasses with, but folded over a couple times. It turned out, this contained the 15 or so gemmae of the D. 'Lake Badgerup' I'd ordered.

Gemmae, it turns out, are tiny leaves used for reproductive purposes. A single one is not much larger than the period at the end of a sentence. The package said to plant immediately. Well, I couldn't do that, but I did spend some time learning what gemmae were and how to care for them. I threw together a mix of ingredients that I thought might work and then used a pin to remove the gemmae from the tissue and place them on the potting media I'd created.

After I'd done that, I used a high powered lens to locate all the gemmae, and marked each one with a tooth pick. Here you see one of the gemmae next to a tooth pick.

After a couple weeks of growth, I finally have a plant that shows a typical sundew leaf.

I didn't know this until I read up on sundew culture, but a good way to grow sundews is to raise them in rather tall pots, so that the bottom can be sitting in a tray of distilled water. The potting medium surface should be about 4 inches above the water level. The plants send roots down as far as they need to in order to get whatever moisture they need. On this picture, you can see a purple-colored root being sent down from the gemma while the new leaves are growing upward in a whorl.