Question - How do I prevent my Hydrangea leaves turning yellow and dropping?
I have a Pee Gee Hydrangea Tree and some of the leaves are turning yellow and falling off. We've had alot of rain in our area throughout spring and summer. Is this the problem?
Hydrangeas grown on a chalky (very high alkaline) soil are susceptible to chlorosis. This condition results in the green of the leaves turning yellow between the veins or the leaves may be almost white. Chlorosis due to the high alkalinity of the soil can be corrected by increasing the acidity of the soil. The acidity of the soil can be increased by digging in peat and adding acid ferilisers.