Is it ok to cut back tall raspberry plants in the fall? They bear fruit in...

Asked August 27, 2014, 2:46 PM EDT

Is it ok to cut back tall raspberry plants in the fall? They bear fruit in July. Now some of the plants are tall and gangly. What impact does it have on the plants if I cut them all to 36" in September ?

Ramsey County Minnesota

1 Response

Thank you for the question. Since your raspberries fruited in July, they are probably are a floricane variety which means they fruit on 2 year old canes. Here is an explanation of both early and late,or ever bearing raspberries; There are two types of raspberries - those which produce fruit on one-yr-old canes (primocanes) and those which produce fruit on two-year-old canes (floricanes). Floricane varieties produce raspberries in late spring/early summer (June) and primocane varieties produce fruit in late summer (August or later). In both cases, the canes which produced fruit this year should be cut off at ground level as soon as the fruit is finished. In the case of the primocane varieties this means that all of the canes are cut back every year. In the case of the floricane varieties, only the canes which just produced fruit are cut back. The canes which did not produce fruit this year should not be pruned at all because these are the canes which will be producing next year's fruit. If you prune floricanes before they produce fruit you will lose some fruit production. If you have summer bearing raspberries and cut all the canes to 36 inches, you do risk losing some fruit next year.