Spray horticultural oil now to control them
The mild winter is likely to be followed by early invasions of scale insects, spider mites and other bugs that over-winter in the cracks and crevices on the bark of trees and shrubs. Roses, Alberta spruce, blue spruce and roses are the most susceptible species for spider mites. Scale insects will attack euonymus, crab apple, cherries including cherry laurel, oak and pine. Wax scale insects especially like hollies.