By Ellgee
United Kingdom 
I have a holly tree - I don't know which variety. A lot of leaves are turning yellow, with irregular black/purple spots. Have you any idea what this is, and what I can do about it?
16 Jun, 2010
Previous question
« Can anyone tell me how to get rid of the Herb Robert that is trying to take over...
Next question
Could be Holly Leaf Miner - inspect the leaves closely for signs of "mining" in the leaf tissue. No treatment available, and the only harm it does to the plant is to cause the discoloration on the leaves. Any leaves which turn yellow and fall are likely to be ones that would have fallen anyway, regardless of the Miner.
16 Jun, 2010