Do arborvitae have serious insect or disease problems?
Arborvitae have few insect or disease pests. However, they are not trouble free. Arborvitae are susceptible to winter burn. Wind and sun can dry out the foliage during the winter months. The desiccated foliage turns brown in late winter/early spring. Arborvitae also can be severely damaged by browsing deer.