It is native to Colorado and widely planted throughout the state. It is a very common street tree that has been over planted in many places. This fast growing tree can grow to a height of up to 60 feet with spread of up to 40 feet. This particular tree is a favorite in Lincoln Park and is a prime specimen of a mature green ash. It adapts to a wide range of soils. It is also prone to a wide variety of insect pests. Seedless varieties are preferred.