I planted some hoheria trees last year but the leaves have some type of fungal disease. There are small black spots on the underside of the leaves, the leaves turn yellow and fall off. I sprayed with Rose Clear Ultra and it definitely helped but the problem seems to be returning again. Do I need to keep spraying or should I replace the trees? Any advice would be appreciated. thanks.
QuestionsHow to growTrees and ShrubsPests and DiseasesHoheria Trees with fungus like disease on leaves