A sweet treat in midsummer! The very large, almost seedless, sweet, dark maroon-colored berries boast a sweet-tart flavor and are excellent in jams and jellies, wine, preserves and for fresh eating. Thornless boysenberry canes produce 4-6 quarts per plant at maturity. The trailing canes grow 4-6 ft. tall. Boysenberries are harvested when the fruits drop from the vine at the slightest touch. Boysenberries don't keep well—so the best way to enjoy them is to grow them yourself. For best results, plant boysenberries in well-drained, slightly acidic soil in full sun. Self-pollinating. Zones 5-10.