Magnolia Grandiflora - black spots/patches

[ladylush]

Does anyone know what this is? It's a fairly young tree (about 18 months old) and has been flourishing up til now. There are holes in some of the leaves as well but I think that is probably caused by snails as they do love Magnolia trees.

[Pannacotta]

Sorry I don't know the answer but this page on RHS site might help
www.rhs.org.uk/advice/problem_solver/index.asp

[ladylush]

Thanks for link I did look but couldn't see anything conclusive. I think I will take a leaf to the garden centre and get some advice.