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Spruce Spidermites Info & Control

Info / Symptoms:

The Spruce Spidermite is a type of mite that specifically eats spruce and a few other conifers. These mites eat the plant by poking holes in the needles, resulting in small discolored marks left behind with each feeding. As multiple mites feed on a single plant, the needles can rapidly accumulate numerous small yellow spots, commonly referred to as “stippling.” This extensive stippling can give the affected plant a bronzed appearance.

Control Methods:

Wasco Nursery recommends spraying Bug Blaster on plants infested with Spidermites. Plants can be sprayed once every 2-4 weeks as needed, until the insect is gone.

All-Seasons Horticultural Oil is a good organic alternative.