I have two beautiful boxwoods in my garden. One gets more sunlight (3/4 of the day) than the other (1/2 of the day). The one getting half developed a round patch of brown dead leaves at the back of the plant facing the house. It is a good three feet from the base of the house. What would cause this? The brown is about the size of a melon.
Certified GKH Gardening Expert
It could be a fungus but it also be a lack of sunlight. If the shadow from the house fell just right, it could cause a patch like this. But, since it is new, we can assume that it is a fungus. Treat the plant with a fungicide and that should help clear it up.