Perennials live for more that one growing season. There are two types of perennials. Herbaceous perennials generally die to the ground at the end of the growing season but send up new shoots the following spring. Woody perennials, such as trees and shrubs, do not die back to the ground but get larger each year. The hot dry weather and south winds should bring spider mites to our area.
Many spider mites produce webbing, particularly when they occur in high populations.
When you see this webbing, you need to jet spray your plant with water on a daily basis. The water will wash off the spider mites and reduce the populations. Eggs that are laid may still be there, so repeat washing will prevent the populations from building up again. Watch all your evergreens and certain garden plants for spider mites this summer. Damage is identified by yellowish to rust color of evergreen foliage.