I'm in the process of adjusting a newly installed drip system and we had a solid week of rain about a week ago followed by a hot, sunny week and probably too much watering from my un-perfected drip system. My garden is on the roof in containers. I am located in New York City. I have a pear tree that earlier in the season I defoliated because the leaves all turned black. I sprayed it with neem oil, assuming the issue was fungal, and as the new leaves came back they still were marked with black spots and got worse as they got bigger. The Pear Tree is in a 25" sq cedar planter, just transplanted last year...plenty of room and doesn't dry out fast at all. I thought it might be due to too much water, but it has excellent drainage and I have been letting it dry out. the problem persists. I don't think it's fire blight since the branches don't turn black and get that bent shape. Any suggestions would be appreciated.