Lynn, the gorgeous tree in the front yard is an Arizona Ash ;
http://wildflower.org/plants/r...
I planted it in 1969, when our yard was completely bare, just soil, when we moved in, so I had to start from scratch.
I wish I had known then what I know now, but the tree was a wonderful choice, the leaves turn a beautiful golden color and it basically covers the entire front yard and gives us light shade which allows plants to grow under it.
We had it trimmed last winter to raise the canopy and allow more light for the flowers, so the structure shows a lot more now. It makes it very pleasant to sit there and enjoy the flower beds.
Josephine.