black spots on holly leaves
I planted 2 holly last summer. They have looked great through the winter. This spring I am seeing black spots on the leaves. Should I spray for fungus? I have seen on other posts that the best way to prevent fungus is to plant in healthy soil. I might say I planted them right in front of a spot we took a Washington Hawthorn tree out that may have been diseased and was dying. If the soil is diseased, what can I do to improve it? I dug out a large hole and filled in with fresh compost when I planted them.