Prune out canes that have damaged foliage. Since leafcutter bees are pollinators of several crops, the use of chemicals to destroy the bees is not recommended. Round or oval masses appear on stems and canes. Foliage wilts, turns yellow and drops from the plant. Growth is stunted and flowers are not produced.
Scales usually appear in clusters.
Prune out and destroy heavily infested canes. Spray plants with an insecticide. To prevent scale infestation, spray plants with horticultural oil in early spring. Holes appear in unopened rosebuds. Leaves and stems may also have holes or may be chewed off.