[Arid_gardener] Chinese Tallow yellowing

[Thomas Homans]

I bought and planted a 15 gallon Chinese Tallow tree about two weeks ago and 
was watering it every other day (it was still in the 90s at the time) until 
my wife went into labor and we spent 3 days at the hospital.  When we came 
home, this tree's leaves were about 50% yellow with brown edges and falling 
off the tree.  We had about a third of an inch of rain while we were gone, 
however, and I'm wondering if the yellowing is because the tree has gotten 
too much wated since planted?   If the tree was not getting enough, wouldn't 
the leaves just turn brown?

At what point in the fall does this tree change colors, how cold does it 
have to get before the leaves turn the maroon and plum color that I've read 
about, and will that even happen here in the valley?

Thanks
Tom