Posted: 07/09/2014 at 15:26
Well I have had a good look at the tree and can find no black markings or mould on the trunk or branches only a few discoloured leaves. There is no evidence of any aphid activity and no stickiness on any of the leaves.
I have noticed a couple of discoloured leaves on my other crab apple , black circles meeting up but no difference in leaf texture. The only thing I saw was one tiny scurrying browny orange insect. I am wondering if it is actually scab?
Is there any benefit in my getting something to spray them with now as the second crab apple produced a great unblemished crop this year and still has all its leaves?
having trouble getting onto the RHS s ite at the moment but thanks for the link Buddyboy.