Bru-nO / Pixabay. Pruning Summer Raspberries. According to Marvin Pritts, a small fruits specialist at Cornell University in Ithaca, New York, the most fruitful portion is the top third of the cane. Following summer harvest, prune off the old fruiting canes to the ground. Annual pruning keeps the plants vigorous and productive, so you get the best return from your plants for the space. Summer bearing plants will be pruned after harvest in the late summer or fall. The roots and crown of these plants live for many years, but the stems (called canes) only live for two years. Summer-bearing raspberries can be further categorized as early season, mid-season, and late season in terms of when they bear fruit. These are called fall-bearing or ever-bearing raspberries, and, to keep that fruit coming, you must prune the canes. Primocane Vs. Floricane – Distinguishing Between Primocanes And Floricanes, Raspberry Plant Problems: Reasons For Raspberry Canes Turning Brown, Pruning Black Raspberry Bushes: How To Prune Black Raspberries, Prickly Kale Leaves – Does Kale Have Thorns, Corn Husk Wreath Ideas: How To Make A Corn Husk Wreath, DIY Air Plant Wreaths: Wreath Making With Air Plants, Crabgrass Varieties: Information On Types Of Crabgrass Weeds, Gardens And Lightning: Learn About Lightning Safety Out In Gardens, Roselle Flower Seeds: What Are Uses For Roselle Seeds, Pruning In The Garden – Do You Have To Prune Garden Plants, Thanksgiving Tradition: Turning Homegrown Pumpkins Into Pie, Growing Thanksgiving Dinner – Must Have Turkey Side Dishes, Interesting Uses For Pecans: What To Do With Pecans, The Bountiful Garden: Bringing The Garden To Thanksgiving. Remember that the top of the shoot has the most fruit buds, so only trim off the very tip. Summer Bearing Red (and yellow) Raspberry Bush Pruning. When raspberries are first planted, they’re usually year-old primocanes. Ideally, you want the berries to ripen while the weather is still warm, because warm sunshine makes raspberries taste better, but you don’t want them coming in so early that the fruit gets scalded by summer sun. The floracanes fruit from the lower buds in the summer, and at the same time, new first year primocanes will be growing in. If you are in the habit of cutting your canes back by half (leaving them about three feet tall) so they will be self-supporting, you are sacrificing half your potential crop. Allow your canes to be approximately 4 inches apart per row. Since these plants will produce on this year’s new growth, the goal is to remove the canes that produced fruit this year. Prune out all the smaller ones, leaving fruiting canes four to six inches apart in a bed that's about a foot wide. With summer bearing raspberries, in the next year, these primocanes will become floricanes, which are the darker fruiting canes with a thin brown bark, and new thinner green primocanes will emerge from the base of the raspberry plant. If you want to know when to prune fall-bearing raspberries, the answer depends on whether you want to harvest the summer crop. Buds that formed there late last season are not strong and often suffer winter damage. Trimming fall-bearing red raspberries isn’t difficult, once you figure out whether you want one crop a year or two. Some raspberry bushes bear fruit at summer’s end. The remaining new canes need to be thinned out in the spring, leaving 3 to 4 of the largest remaining canes per foot of row. You have to distinguish between the first year canes (primocanes) and the second year canes (floracanes) and prune them differently. Leave the healthiest and strongest canes.   These raspberries bear fruit on 2-year-old canes, the ones that sprouted the previous season. Later in spring, remove the first flush of new replacement canes when they get six inches tall. At this point, the canes are green and you will see them form fruiting buds. Summer-bearing (floricane) raspberries will provide one large harvest, usually in late summer or early fall. Leave 10-12 of the healthiest canes, about ¼ inches in diameter, with 6-inch spacing. PRUNING SUMMER-BEARING RED RASPBERRIES In the spring when pruning raspberries, remove all the weak, diseased, and damaged canes at ground level. How to Prune Summer-Fruiting Raspberry Canes. For this “how-to” guide, I’m going to assume your plants are aged two years and older. Summer-bearing raspberries are pruned as follows: immediately after the fall harvest, the fruiting canes are cut to the ground. You want the new buds to grow from below the surface of the soil, not from cane stubs. By this time, they are darker with peeling grey bark. The first year, the canes are called primocanes. If you want to know how and when to trim fall-bearing raspberry canes, read on. Sign up to get all the latest gardening tips! These are called fall-bearing or ever-bearing raspberries, and, to keep that fruit coming, you must prune the canes. Summer-bearing – Remove all weak canes to the ground in early spring. You can identify them fairly easily as they will appear brown or grey in color and be more brittle. You simply cut each cane as close to the ground as you can. In late winter, cut back all of the canes to 5 feet above ground. Late winter or early spring, just at the end of the dormant season, is the best time to prune summer-bearing red raspberries. These canes will bear fruit the same year. If you only want the fall crop, learning how to prune a fall bearing raspberry bush is not difficult. (adsbygoogle = window.adsbygoogle || []).push({}); © 1972 - 2020 National Gardening Association, Times are presented in US Central Standard Time, Today's site banner is by DeerXing and is called "Always Living Hens and Chicks". To understand the rules for trimming fall-bearing red raspberries, it’s important to get a clear idea of their growth cycle. Some raspberry bushes bear fruit at summer’s end. This site is protected by reCAPTCHA and the Google Fall-bearing – These can be pruned for either one crop or two. Many gardeners sacrifice the summer raspberry crop and only harvest the fall crop, which is superior in quality. Trimming fall-bearing red raspberries isn’t difficult, once you figure out whether you want one crop a year or two. The next step is shortening the remaining canes. So the only portion you should remove is the very tip, where the cane becomes thinner or somewhat undersized. First year primocanes are green and fruit in the fall. New canes will grow every summer, fruit in fall, then get pruned out in early spring. Pruning Summer-Bearing Raspberries . Late winter or early spring, just at the end of the dormant season, is the best time to prune summer-bearing red raspberries. You’ll find this guide particularly helpful when your raspberry canes have grown slightly out of control. If you decide to sacrifice the early summer crop, you simply prune all of the canes to the ground at the end of winter. Privacy Policy and Red Raspberry Bush Pruning. Use these convenient icons to share this page on various social media platforms: Articles → Plants → Edibles → Small Fruits and Berries → Raspberry, Articles → General → Garden Care → Plant Care Techniques. Pruning Fall-Bearing Raspberries As for tip-pruning fall-bearing raspberries, I think each gardener must come to an understanding with the variety under their care. Tip prune any that may have suffered cold damage. Raspberries (Rubus spp.) Then thin the canes that will bear this season's crop. For support, fasten the canes to a trellis, which can be as simple as a single strand of wire set slightly lower than the tops of your canes. Harvesting raspberries. Prune summer fruiting raspberries in the late summer or fall, after the berries have been harvested. Since these canes bear berries on second year growth, the aim is to prune out only those canes which have fruited this year (floricanes). This is accomplished, also in the spring, by simply cutting all of your patches first-year growth down to the ground. If you didn't remove the old canes right after they fruited last summer, take those out first. Then thin the canes that will bear this season's crop. Terms of Service apply. Step 1. The next summer, these canes are starting their second year and are termed floracanes. Only leave one plant every four to six inches. When winter comes, you must prune these floracanes to the ground, taking care to distinguish them from the green primocanes. If you didn't remove the old canes right after they fruited last summer, take those out first. Sign up for our newsletter. When you are pruning summer fruiting raspberries’ first year canes, remove the smallest and weakest ones first. Here's how. grow in the wild and in gardens throughout U.S. Department of Agriculture plant hardiness zones 3 through 10. Pruning Summer Bearing Raspberries. Here's how. The buds at the tips of the primocanes fruit in autumn, while the lower cane buds do not fruit until early the following summer. You’ll want to thin out the new primocanes at the same time, only leaving the tallest, most vigorous canes. You will leave this season’s canes (primocanes) in place. These will turn into floricanes and fruit next year. Such early cane removal increases the crop by 20 to 50 percent. 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