Height: 8′-15′ Spread: 8′-12′. Small yellow flowers appear before leaves and are followed by 1/8″ dark blue fruit in late July to August on female plants. The fruit is usually consumed by birds. Silky smooth blond bark adds interest when lower branches are removed to create a small multi-stemmed tree. Medium green foliage turns yellow for fall. Native to the southern Rocky Mountain region. A great aspen alternative. Full sun. Zone 4.