Des Moines is suffering under one of the worst droughts in decades. My garden has received less than 1/2 inch of rain in the past month. That, coupled with days on end of temperatures exceeding 100 degrees F has created extreme stress on plants. I seldom water established plantings, but this year I’ve resorted to rescue watering for most of the plants in my yard. I’m not trying to keep everything in photo-shoot-ready condition. I’m simply trying to make certain the plants will survive.
Perennials, trees, and shrubs planted within the past two or three years are most vulnerable, but many well-established plants are also showing signs of drought stress. The shrub pictured below is growing on the south side of a parking garage. Reflected heat off the concrete wall creates a desertlike microclimate in this spot. The shrub should have been watered long ago. At this stage, it likely will suffer dieback of the growing tips. But if it gets water right away, it likely will resprout from the base.
Because water is in short supply during a drought, it’s important to water efficiently. Sprinklers can spread water over large areas, but they lose some water to evaporation as they sprinkle. And usually they also over spray onto sidewalks and driveways, where the water will simply run off. If you don’t have large expanses to water, consider using soaker hoses that ooze water the full length of the hose. For trees and shrubs, you can fashion a drip watering system by drilling a few holes into the bottom of a five-gallon bucket, filling it with water, and placing it near a tree to slowly distribute the water to the root zone. For large, well-established trees use several of the bucket to deliver more water.
What drought-defying tricks do you use in your garden?