Birch Tree losing leaves in July
My 70+ year old birch tree has started to drop its leaves at an alarming rate with the slightest breeze or touch of the branches and the ground is carpeted! The leaves are still green, although the reverse sides of many of them are brown spotted. Seed heads are already mature - is this unusual for July? I read somewhere that leaf drop of up to 50% can happen but that's usually due to drought, while here in Edinburgh on 15th of the month we have already had 140% of our expected July rainfall - and have experienced the dizzying delights of 105 minutes of sunshine (:-l Any advice or diagnosis will be gratefully received!