Question
How do I thin out maple tree in the back corner of my property, that is over 50 ft tall and two sets are grown together?  I am loosing my grass for the third time and I do water & fertilizers when necessary. So, what is the best way to handle this?

Answer
I would prune the lower limbs allowing light to get to the grass (light is the normal problem not water). You can cut up to about a half the limbs without harming the tree. I would also check with a local nursery about a grass species that will grow in the shade or partial shade. That maybe the problem the grass you have does not do well in the shade--there are species of grass for shade.

Here is a web link to information on how to prune the tree limbs. The best time for maple is mid to late summer this time of the year the maples do not bleed as much as spring.
http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/text/pruning.ht...