This tree is not drought or heat tolerant and prefers moist, well-drained soils. It is a sensitive tree to grow in the valley and not many specimens exist. This is a medium-sized tree that can grow up to 35 feet and is used as an ornamental. Fruit grows in clusters and is usually red or orange and is attractive to birds. Fall color may be yellow to rust-orange. 'Cardinal Royal' is a variety of mountain ash and may do well in the valley.