Growing Berries in Your Backyard
Summer-bearing raspberries produce fruit on 1 year-old canes.
Summer-Bearing Red Raspberries. After harvest, remove all floricanes on which fruit were borne. Do not tip or pinch the newly-developing primocanes. In the dormant season, remove all weak, broken, and disease- and insect-damaged canes. In the hedgerow system, thin the canes to about four to five strong canes per foot of row, and within the confines of the 15-inch wide bed. Also, shorten the remaining canes to about 6 feet and wrp or tie the canes to the trellis system, if necessary.
Fall-Bearing Red Raspberries. For a fall crop only, cut all canes to ground level when plants are dormant, usually in the winter before growth begins. When the new primocanes emerge, maintain a row width of 12 to 15 inches by removing suckers that grow outside of the row. In fall, a crop will develop on the tips of the canes. In the dormant season, remove weak or damaged canes and the tips that fruited that fall. Again, thin to 4 to 5 strong, evenly spaced canes per foot of row. A crop will develop the following spring on the lower portion of the canes.
Black and Purple Raspberries. During the summer, top black raspberries to a height of 2 feet, and purple raspberries to a height of 2-1/2 feet. Topping usually needs to be done two or three times during the summer. Primocanes produce many laterals. During the dormant season, remove all damaged canes and those less than 1/2 inch in diameter. Also, shorten lateral branches during the dormant season to approximately 8 to 10 inches for black raspberries and 12 to 14 inches for purple cultivars. Cut unbranched canes to 2 1/2 to 3 feet (75 to 90 cm). After harvest the following summer, cut all floricanes down to the ground.