Early midseason. This extremely vigorous variety will grow almost twice as fast as most other blueberries. Bluejay features ample crops of medium size, mild flavored berries that will stay on the bush for long periods without loss of fruit quality. Bluejay is a large bush, growing 6-7 feet tall with light green summer foliage, yellow-orange leaves in the fall, and bright yellow winter wood color. Zones 4-7.