Minnesota gardeners are experiencing a streak of hot weather — 90s during the day, 70s at night. This can make gardening challenging for plants — and gardeners. Here are some do’s and don’ts for gardening and lawn care during hot and humid weather.
DO water plants early in the morning – and don’t forget your trees!
Applying water to plants before the really hot temps occur allows soil to absorb the water and reduces evaporation.
Always apply water at the base of the plant (the root zone) whenever possible to reduce the chance of leaf disease and other soil-borne pathogens affecting your plants.
Deadheading means cutting off spent flowers. Once a flower dies, a plant will use a lot of its stored energy to produce a seed head. By removing flowers after they bloom, the plant will use energy for leaf, stem and root development instead of seeds. You might even get a second bloom!
During the hot month of July, our cool-season lawn grasses become dormant meaning they slow down their growth rate due to high temps. Mowing 2 to 2.5 inches can stress grass plants and remove too much of the grass blades that shade grass plant crowns and reduce burn-out (when our lawns become brown).
Mow your lawn higher — 3 inches or more — to leave more green grass for photosynthesis and to shade your grass plants from the hot summer sun.