If your canes give fruit in September or later they’re autumn fruiting. Summer fruiting ones are ready in June or July. I can remember helping my Dad to prick out seedlings, even before I could see over the top of the potting bench. The first thing to do is to determine whether your raspberries are summer fruiting or autumn fruiting. When pruning is completed, remove the pruned material from the garden area and destroy it. Cut back the lateral (side) branches to 12 inches in length for black raspberries and 18 inches for purple raspberries. Raspberries are pruned in late winter (February), when the vegetation is highly inflamed and the nutrients contained in the wilting shoots have been transferred to the root system. Pruning at this time will help to ensure that the plants have had time, over the dormant winter months, to store plenty of carbohydrates in their root systems. • Autumn-fruiting raspberries. Cut these back to live growth. In the spring when pruning raspberries, remove all the weak, diseased, and damaged canes at ground level. Remaining canes should be spaced about 6 inches apart. You need to treat the summer ones slightly differently to the autumn ones.Prune all of your autumn fruiting raspberry canes to … A summer fruiting raspberry cane only fruits once on each stem, so they should be cut down to ground level after harvesting. Pruning Late Summer/ Fall Raspberries. Pruning can also be done in early spring before the start of growth, at the same time removing shoots damaged during the winter. During the autumn, cut down to soil level all canes that bore fruit during the summer. Pruning is not only an important part of proper raspberry plant care and maintenance, it is also a way to ensure and improve the development of the fruit crop. Summer fruiting raspberry canes make their fruit on stems that are one year old, as opposed to Autumn fruiting varieties that fruit on their new growth. Written by: Sue Sanderson Plants and gardens have always been a big part of my life. Also, prune out the tips of the canes that have died due to winter injury. Pruning autumn fruiting varieties is simple - you just cut down all the canes. Prune in late winter (February), cutting back all the canes to ground level before new growth commences. Once you have removed the old canes, examine the remaining stems that began to grow … Pruning Summer Fruiting Raspberries. Here are a few things to remember when pruning your raspberry plants: Not everyone will prune the exact same way – including the experts. This page provides advice on how to prune raspberries and when you should prune your autumn fruiting raspberries. Leave the bottom of the cane to fruit the following spring or early summer. My next mistake was leaving out something important – thinning the new canes when they come up in spring. 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