Growing in a Micro-Climate

Missouri's in the temperate zone, but in some dry rocky south-facing sandstone glades that get a lot of sun, cheerful in the huge long drought grow cacti like these prickly pears (opuntia humifusa). I haven't seen any other type of cactus in this area. What's a "glade," you ask? A rocky outcropping amidst woods or grassland. Our glades here are sandstone. The cacti grow in just-right areas only a few feet square called "micro-climates." This one's on the sunny side of the road. The opposite side, chilly and shadowy, is an entirely different ecosystem, supporting temperate plants and creatures and moss and no cacti.

I find cacti on the edges of woods here, at the base of dry south-facing sandstone formations, and on the edge of my south-sloping gravel driveway, where prickly pear plants like shoe soles have persisted for years despite being snowed on, frozen (they turn purple), stepped on, bruised, and run over by cars. If not, they produce frilly yellow blossoms and plum-like fruits. Always get a pleasant sense of wonder when seeing  these wise and witty-looking desert entities way up in the Ozark foothills.

Water from the Sky

The storm introduced itself with a gust of wind of the kind that snaps trees and sends logs flying through the air. Earth-quaking thunder passed over. The electrical power shorted out at 11 p.m. Soon the violent part of the storm was over. My device's battery ran down and, with nothing else to do in the pitch darkness, I went to to bed wondering what I'd see outside in the morning.

The pump is electric, so the only water was in the pipes and there wasn't much. I had filled pans with water as the storm approached, and had also put in a few gallons' supply, but these bottles past their expiration date tasted chemical, so I used it only for washing. Made a cup of tea. All things, including my life, felt like luxuries. Going outside I saw downed branches but nothing serious; my fragile tomato plants were undamaged. In fact all plants sang with happiness because they'd been rained on. With great curiosity I approached the rain gauge and was amazed and grateful to see a full two and a half inches. So ended the hottest and most dreadful stretch of drought here since the Dust Bowl days.

For a while I tried recharging my device through my car battery to check the electric company's outage map, but soon ran low on gasoline. I couldn't work on the computer so I took a walk and saw a swollen, muddy LaBarque where there had been only a thin nagging trickle. I then swept leaves from my porch, broke down boxes for recycling in the garage, and had my first full day outdoors for many weeks; the storm cooled the air from the 100s to the 90s. As it got too warm I went into town to an air-conditioned hair salon to get a haircut I'd been putting off.

Just as the day was beginning to be not so wonderful, when after 16 hours without electricity I started to think about the spoiling food and useless toilet, the electric power resumed and everything indoors sang too.

Drought's First Casualty

I heard "CRAACK!" and turned just in time to see this fully-leafed branch from the huge twin oak peel off and land, completely blocking our only access road. Thank God I wasn't under there and my car was garaged. My neighbor and I were now trapped so I phoned the handymen at once. They said, first thing in the morning. With time to inspect it I tried to find out what had gone wrong with a branch that looked healthy.

What looks like interior rot is the tree's heartwood, and in any tree it's dead already, having done its job. As you know, a tree feeds itself through the wood just beneath the bark, and its concentric rings are what hold it up. It's like a hollow metal pole; its strength doesn't depend on its core. I didn't see real rot. And a sick or bug-infested branch wouldn't have such healthy greenery.

It was, however, a horizontal branch on a very old tree, richly weighted with other leafy branches, after two consecutive years of severe drought. In June we didn't get a full inch of rain here (the city got a bit more than we did). Our towns cancelled Independence Day fireworks for the first time ever because of the fire hazard, and I hope the kids shooting off fireworks for fun aren't doing it anywhere near our dry-as-dust woods and fields.

Where the branch peeled away

Next morning the handymen chainsawed the branch and also amputated the branch from the redbud across the lane that broke beneath the weight of the oak branch. The twin oaks must be among the oldest trees on the property; they are 80 feet high at least and a glorious sight as you drive up toward the house. Branches do fall from them sometimes, but usually only dead ones. Hope not to see any more like this.