Tiny members of the arachnid (spider) family that colonize on the underside of rose leaves. If left unchecked, mites can defoliate a entire bush rapidly.
A group of small, active, non-insect arthropods, some of which are predators of other mites and small insects (e.g., thrips); most species are plant feeding. The twospotted spider mite ( Tetranicus urticae), typically more of a problem under hot, dry conditions and damaging cotton plants by rasping mostly lower leaf cells, is the predominant mite on cotton in the Southeast; populations often reduced by naturally- occurring fungi, particularly under humid conditions.
Mites are relatives to the spider, but are very small and often microscopic. They can be yellow, red, or green. Like their relatives, mites can spin minute webs under leaves and in joints between stems. Before you ever see the mites, you'll probably see tiny yellow spots on leaves. To confirm the presence of mites, tap leaves over a white surface where the tiny spiders will be more visible. Mites are frequently a pest of drought stressed plants and can usually be controlled by keeping plants well watered and by hosing off those that are heavily infected. Insceticidal soaps can also be used.