The majestic blue oak is a drought-tolerant deciduous tree that provides food and shelter for local wildlife. It supports birds, squirrels and insects. It is a host plant for several species of butterflies and moths.
This tree gets its name from its blue-green leaves. The bark is pale gray and textured. Blue oaks are slow-growing, but can grow to 80+ feet in height. The canopy can spread to a width of 30 feet or more. It requires a good-sized planting area and does best on dry, well-drained slopes.