The most planted Oak tree in Las Vegas. Also known as the Live Oak or Virginia live oak from the southern United States is a very adaptable tree. It does well in any soil, heat and cold hardy, and drought tolerant when established. In its native range in the southern united states, there are specimens that are almost 400 years old and are almost 150 ft wide. In Las Vegas, maybe 1/2 of that size at full maturity, which is over 70 years since they are very long lived. This evergreen tree is a wonderful addition to your yard.