Often, suckers can cause overly congested conditions around the base of your primocanes.
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. Raspberry plants are pruned by cutting back canes after they bear fruit.
There's no sure way to tell whether an unpruned fall-bearing raspberry bush will produce an early-summer harvest, but cutting it down to the ground in the spring definitely won't help, because the canes won't regrow sufficiently in time for a summer harvest.
Cut back one-crop, summer-bearing raspberry canes as soon as the harvest is over. Cut these just harvested canes down to the ground.
Do not prune back new canes that have emerged during the summer. After the old, fruit-bearing canes have been cut back, train the new canes to a post or to one or two horizontal stumplopping.barted Reading Time: 3 mins.
Dec 01, 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 not leafing out. If the plant is leafing out, pruning could stunt its stumplopping.barted Reading Time: 3 mins.
Jan 31, When pruning these raspberry varieties, you have two choices. You can either: Cut all canes off at ground level. (Newly purchased canes of this type of raspberry should be pruned to within 25cm (10 inches) of the ground when planted, whenever this is done over the dormant period.)Estimated Reading Time: 9 mins.
Allow your canes to be approximately 4 inches apart per row. For this “how-to” guide, I’m going to assume your plants are aged two years and older.
You’ll find this guide particularly helpful when your raspberry canes have grown slightly out of control. In late winter, cut back all of the canes to 5 Estimated Reading Time: 8 mins.