6-12 ft. tall x 6-12 ft. wide. Mahonia haematocarpa is one of our toughest and most ornamental native, broadleaf evergreen shrubs. Red Berry Mahonia is valued for its fragrant yellow late-spring flowers and profusion of large red fruit that ripen in late summer. It’s a slow to moderate grower, depending on how often it receives irrigation. Excellent for use as a barrier plant (with its spiny leaves) or for blocking unsightly views.