The Garden Bug: Heat stress in plants

By Brenda Weaver

If the temperatures in your area are staying higher than normal, it's tempting to water your outdoor plants more often than you usually do to protect them from the heat. But this may not be helpful!

Heat stress is not the same as drought, and too much water in the soil can cause fungal diseases and root rot. It may be more prudent to refresh your mulch: a three-inch-thick layer over the root zone can insulate the roots against the heat and help retain moisture in the soil longer.

Source: theprudentgarden.com