How Do I Prune My Scuppernong Grapes?

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This is one of the more frequent questions that I receive this time of year, from vine renovation to how to train them and everything in between. However, before I get into how to prune these grapes, I feel a little education is in order. First and foremost, in the instance that you are ever on a quiz show asking questions about grapes, Scuppernong is a variety (typically, a generic name used for all white grape cultivars) of Muscadine Grape. The Scuppernong variety was selected from the wild in Tyrrell County, NC by Isaac Alexander around 1760. Most homeowners have a cultivar of muscadine grapes growing in their home grounds. Table grapes, also called vinifera grapes, do not grow well in Eastern NC because of susceptibility to Pierce’s disease.

Muscadines are nearly bullet-proof vines that grow well in a variety of conditions. The grapes themselves are much different than table grapes in that they have a tougher skin or hull that most folks do not care to eat (and to my knowledge there is only one seedless cultivar, Razzmatazz). However, this makes them fun to eat for kids! Take the grape in your mouth and apply enough pressure to pop the hull open to reveal an amazingly sweet fruit. Spit the hull and seed out like a watermelon seed and on to the next grape. In my opinion, the Muscadine should be celebrated not only for being fun to eat, but for its long-list of health benefits.

We have many cultivars of Muscadines that work well in Eastern NC. To name a few:

  • Carlos – is a white grape that is used in winemaking and is often found in homeowner production.
  • Noble – is the primary red grape that is used in muscadine wine making and juice production
  • Fry – is a white grape that is good for fresh market production
  • Nesbitt – is a large black grape that ripens over a three-week period, good for the fresh market
  • Supreme – Is a very large black grape, that reaches the size of a small plum, with edible skin
  • Triumph – is a large, bronze grape that is good fresh

There are several more that can be recommended for homeowners to grow in their landscapes. Some cultivars are self-fertile but others require pollination so be sure to research your cultivar before planting. Visit for more information on cultivars. You can also search for wild muscadine grapes found on the edge between cleared and wooded land. It is important to know what you are searching for when gathering any plant in the wild! Remember, there is unrelenting competition for wild fruit from raccoons and other wildlife so count yourself blessed to find many ripe, wild grapes.

Vine located at the Extension Office showing the single wire trellis system.These vines have been trimmed with hedge trimmers at harvest (this past summer) and will be pruned to the spurs in mid-February.

Vine located at the Extension Office showing the single wire trellis system.These vines have been trimmed with hedge trimmers at harvest (this past summer) and will be pruned to the spurs in mid-February.

Before we can get into pruning it is important to discuss training. All fruit, with very few exceptions (paw-paw being the only one that I can think of), need full sunshine to develop their fruit. The University recommendation for muscadines is to use a single trellis system for maximum production and ease of pruning. Information on trellis, materials, and training can be found at your local Extension office. If you have a vine trained to an arbor, don’t fret, this is okay too! To prune these vines however, it requires a lot of extra work to ensure the vines don’t shade themselves out. If the vines shade themselves out, there will be very little to harvest. If your overhead arbor is out of control, it may be time for chainsaw pruning. Yes, this is a real thing! In order to get the vine back we need to resurrect it from the forgotten so we can re-train the vine. If you are in this situation, give me a call!

Now that we have that out of the way, let’s talk pruning! The cultivar and its vigor will determine how to prune the vine. A more vigorous vine can handle leaving more buds whereas a less-vigorous vine will leave fewer buds per foot after pruning. Looking at the vine, we have four parts we will work on. There is the trunk that should be inspected for borers or any damage. There are the cordons, these are the main leaders on the vine that will be trained to our trellis system. On the cordons, there will be spurs. Healthy spurs produce new wood each year that will bear next year’s fruit. On the spurs will be the buds. This is where our new growth and fruit will come from.

The first step to Winter/dormant pruning is to use hedge trimmers to trim the vines back to a level in which you can see what to prune. Hedge trimmers should be used before harvest to make it easier to find and harvest fruit as well. Next, inspect the vines for any cold damage, this will look like large cracks and cause rotten spots in the cordons. Take a good look at the spurs and make certain that they are healthy and thriving. Now, trim the remaining new wood back to allow for 10-20 buds per linear foot of the cordon. This is accomplished by leaving 2-4 buds per healthy spur.

If you are having trouble with growing in your home landscape, call the Extension office at (252)946-0111 or email Gene Fox at I will have a commercial ornamentals and turf class coming up in February/March. If you need pesticide or landscape contractor credits, please keep an eye out for details on this class. I am also planning to have a series of classes beginning in February that will go into soils, fruits, vegetables, ornamentals, and lawns. Keep an eye on our website or the Beaufort County Master Gardener Facebook page for more details or register at  What You Need to Know So You Can Grow Until then, Happy Gardening!