Hi all. This is the first year I've tried growing rhubarb, and was given 3 crowns which were planted up in about late February. All has seemed to be going fine, but today I've noticed that quite a few of the leaves on all plants have turned bright red. Have googled it, and the likely cause seams to be some leaf disease which will eventually finish the plants off. Is there anyone that can give me any better news? The plants themselves look healthy - in a technicolour sort of way.