Shrivelled brown leaves on Rowan tree
The leaves on my rowan tree (now in it's 4th year) suddenly turned brown and shrivelled at the beginning of August this year (see photos). It’s not the effects of an early autumn as new green leaves were still appearing at the branch tips but they now are looking brown. Initially I put this down to stress (too much rain, not enough rain?) though it is on a reasonably well drained sheltered from wind site , but now I’m seeing some brown patches on a nearby dwarf apple tree (which is about 2m from rowan) so I’m wondering if it is a fungus or bacterial infection. Any suggestions most welcome.