Hi, Does anyone know what the brown marks on my Oakleaf Hydrangea might be? The plant is in its second year in an otherwise well established border containing Choisya, Lilac, Albizia and a dead Monkey Puzzle Tree stump. Not sure if any of that is relevant but I thought I'd mention it just in case! It did not have these marks last year and I've only recently noticed them but there are now a dozen or so large spots all over the plant. The plant appears to be doing fine otherwise, very vigorous new growth. Thanks in advance for any input. Cheers MXB
