help with blueberries please
Hi. Can anyone help me please? I've got 3 blueberry bushes; all in large pots and all in ericaceous compost. The leaves on the largest of the bushes (and also the smaller ones but to a much lesser extent) are covered in dark brown spots. Some of the leaves are completely covered so very little green is left. Does anyone know what this is and how I can resolve the problem? I've never really had much fruit from the bushes and they are approximately 5 years old now. Although fruit starts to form before it is fully formed it seems to die and drop off. I've tried replacing the compost but to no avail. Please help!