Pruning at this time will help to ensure that the plants have had time.
Cut back the lateral (side) branches to 12 inches in length for black raspberries and 18 inches for purple raspberries. When pruning is completed, remove the pruned material from the garden area and destroy it.
Removal and destruction of the pruned material helps control raspberry diseases, such as anthracnose and spur blight. Aug 29, Fall-Bearing Raspberries If only a fall crop is desired, cut all canes off at the base before growth begins in spring.
Fruit will be produced on primocanes in late summer or fall. If both fall and summer crops are desired, thin the canes as described for summer-bearing raspberries. Once your raspberry plants have put on enough growth (which may not be until after their first year with you), aim to prune in the early spring, just as new growth emerges. Prune young canes back until they are around 4 to 5 feet tall.
This will discourage overgrowth and shading and. Dec 01, This early fall pruning of black raspberries will signal to the plant to produce more side branches. You will be pruning the black raspberry bushes again in the spring, and quite severely. Once you are done cutting back the black raspberry bushes, they won’t look like bushes anymore.
For spring pruning, wait until the plants are budding, but Estimated Reading Time: 3 mins. Prune the lateral branches of purple raspberries to 18 inches and 12 inches for black raspberries. Maintain a desirable height of 10 inches for the lateral branches by pruning them accordingly.
Check out this video to learn more about the steps on how to prune raspberries in the Spring correctly. Pruning Raspberries - Why?