Scoop up a handful of soil from around the plant. If the soil is very dry, the plant's stress might stem from not enough water. But, if the soil is moist and holds together when you squeeze it into a ball, the issue might be too much water. If the soil is very moist and the plant is drooping, cut back on the amount you water.
Add a layer of mulch around the plant if the soil is too dry and the plant is showing signs of stress, such as wilting and dropping leaves. Use natural mulch, such as wood chips or straw. Spread a 3- to 6-inch thick layer around the plant.
Prune plants that look stressed. If a perennial or annual flower has droopy, brown leaves, cut the plant down to about 6 inches from the ground. The plant will regrow, and the new growth should be healthy.
Protect plants from heat waves by draping a floating row cover over them. Cool-season annuals such as lettuce and peas can be shaded from the heat during an unexpected heat wave early in the season.
Restore cool-season annuals that look wilted and stressed by adding more water to the soil, but only if the soil is dry.