I recently bought a cherry tree called Kanzan. Holes have appeared in some of the leaves and other leaves have turned brown around the edges. Could this tree be diseased or is there a bug attacking it?
‘Kanzan’ is very robust and will grow out of these minor ailments. The holes are possibly due to small snails or to ‘shot-hole’ diease which cause pieces to drop out of leaves and is not a problem to a healthy tree.
Browning around the edges of leaves often happens to young trees before they adapt to a new site.
Keep the planting area free of weeds, grass or any competition for a few years.