Females lay eggs where the bark is loose or cracked, especially on dead center canes.
Heavy infestations cause wilting, bark cracking, and branch dieback. A better management practice is to prune out all larger center trunks. It may take a couple of seasons to do this. Pruning will have the added benefit of promoting new growth, resulting in more flowers and a more shapely plant. Ground cover junipers can become very susceptible to Phomopsis tip blight and Kabatina blight when the plants get too much shade.