[Mrs Jean Owen]

My plum tree is around 4 years old, it has loads of fruit on but the leaves have yellow spots on and is definitely looking poorly.  Does anybody know what could be the problem?

I would appreciate your help.  Thanks.  Jean 

[mobilekat]

Have you got any photos please, as yellow spots could be so many things including Cherry Leaf spot- which is a fungal infection.

[sunshineband]

Here is a photo of plum rust, which, given the time in the year, is a possibility

http://www.donsgarden.co.uk/pests/39?telephone=5