Japanese Maple
Bloodgood

We started in 1999 with two, one on each side of the circle, but the one on the West side died, perhaps from too much sun.
The main trunk on this one died about 6' up. We cut it off at that point and the rest of the tree seems to have survived.

2001:

April 3, 2004:

April 27, 2014:

May 26, 2015, after pruning: