The Zelkova 'Green Vase' is a good choice for a shade tree in the southern landscape. In 10 years, its vase shape will reach 45 feet high and 25 feet wide; more mature specimens will be larger. The upright habit of this tree makes it perfect for planting near the street driveways, or as a shade tree near decks, patios and porches.

Zelkovas were first planted as a replacement for the American elm, which was beset with disease. 'Green Vase' has the zelkova's typically serrated leaves, which are a fresh green in spring and turn gold in fall.

One interesting note about zelkovas: Their branches leaf out at different times. That causes some gardeners to think that some branches have died, but be patient - all the leaves will appear.