How to Treat Spider Mites on Hydrangea

Spider mites are common destructive insects that plague many types of flowers and vegetables, including hydrangeas. They often thrive in warm, dry climates and will eat away at your plants until they are brown, deformed, dried out and nearly dead. Getting rid of the pesky insects can be tricky, but it's important to eliminate them in order to ensure the health of your garden. The best way to get rid of spider mites on your hydrangeas is to keep them moist and to use an insecticide.

Spider Mites On Roses

Spider mites are pinhead-sized, eight-legged spider relatives. Species commonly infesting roses include twospotted (Tetranychus urticae) and Pacific (T. pacifica). Yellow Pacific spider mites feed on both leaf surfaces. Roses frequently host simultaneous infestations of both mites. As feeding progresses, the leaves become completely yellow or bronze. In high temperatures, large Pacific spider mites populations can distort a rose’s young shoots with their dense webs. This commercially available mite feeds on eggs, larvae and adult spider mites. Some insecticides kill the mites' natural predators and discourage their return with toxic residues. Western predatory mites can safely protect roses from new spider mite attacks after the oils dry.