Ross
Shohin
I agree completely. I have a 20 footer in the front yard that gets zero shade year round. Except during winter it gets watered daily (with low angle sprinkler heads) and is extremely healthy. My misguided ways have been made right.
The tree in your yard isn't really comparable because it's not in a free draining soil and it's also not in a pot with a hole at the bottom, so the drainage is quite different. I talked with an arborist recently and he told me that most yard trees end up dying because of over-watering and eventual root rot. There is so much conflicting info out there about soil mixes and watering, I would suggest looking at some of the trees of the people giving advice before you decide whose advice to follow. Also, so much depends on your location and schedule, it is always a good idea to listen to others in your area who grow similar trees. Good luck, have fun, and resist the urge to now go out and buy 30 trees!