By Hobbs
Essex,
United Kingdom 
Heavy clay soil and damp part of the garden. There are still many green leaves but not falling from base but leaves yellowing about middle of plant.
2 Jun, 2010
YOu can add your answers under your question - I get a notification every time you, or anyone else, adds anything. Inspect the plant thoroughly - if all the yellowing leaves are on a single branch, or two branches, look closely at the branches and the leaves for signs of infestation or disease. Oh, for a photo...
2 Jun, 2010