My arborvitae has some brown leaves and little turquoise balls have appeared on the leaves/branches.
24+ Arborvitae Turning Brown On One Side. In the summertime, your tree is likely combating intense heat from the sun. An arborvitae is an evergreen which needs to shed its needles.
What To Do If Thuja Occidentalis Trees Have Turned Brown Hunker from s3-us-west-1.amazonaws.com
By working on one side of the tree at a time, you are less likely to make mistakes. Arborvitae shrubs are exceptionally easy to grow in the ground or in containers provided they are planted right and in the right spot. In the summertime, your tree is likely combating intense heat from the sun.
On evergreens such as fir, arborvitae and yew, the scorch starts at the tips of the needles and moves toward their base.
Mites, aphids and boring insects also damage arborvitae trees by causing brown spots on leaves. Phomopsis twig blight (phomopsis juniperovora), kabatina twig blight (kabatina thujae) and pestalotiopsis tip blight. Avoid planting arborvitae on the south side of a wall (the sun can. I know it must be a parasite of some kind but can't find what it is.
