We have 6 holly bushes in our flower bed. There are no spots or anything visible to the eye, but the leaves are falling off of just one of the bushes.
Why Would the Leaves Fall Off of Just One of My Holly Bushes
Certified GKH Gardening Expert
It sounds like it may be holly leaf blight. While it is normally shown with spots on the leaves, there is not always spots. Sometimes the green leaves just fall when this disease occurs. This article will help: