Cut back the lateral branches to 12 inches in length for black raspberries and 18 inches for purple raspberries.
Starting in late May or when the new growth reaches a height of 36 to 48 inches, pinch out or cut off the shoot tips. Remove about 3 to 4 inches of the shoot stumpfelling.buzzted Reading Time: 5 mins. Jul 27, Red Raspberry Bush Pruning. Summer-bearing – Remove all weak canes to the ground in early spring.
Leave 10 to 12 of the healthiest canes, about ¼ inches ( cm.) in diameter, with 6 inch (15 cm.) spacing. Tip prune any that may have suffered cold damage. Following summer harvest, prune off the old fruiting canes to the ground. May 30, No summer pruning is necessary. Black and Purple Raspberries. Pinch out or cut off the shoot tips when the new canes reach a height of 36 to 48 inches. Remove the top 3 to 4 inches of the shoots. Pinching encourages lateral shoot development and increases the fruiting surface area, resulting in.
Dec 28, When you are pruning summer fruiting raspberries’ first-year canes, remove the smallest and weakest ones first. Only leave one plant every four to six inches (10 to 15 cm.). The next step is shortening the remaining canes.
Remember that the top of the shoot has the most fruit buds, so only trim off the very stumpfelling.buzzted Reading Time: 2 mins. When to Prune Raspberry Plants. 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.
Mar 25, Raspberries of both summer and fall bearing varieties should be pruned in the winter. This is because the berry canes are fully dormant during this time, so any pruning will stimulate growth, rather than damaging the current growth pattern.
Raspberries can be pruned any time between November and stumpfelling.buzz: K.