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How to Prune Old and Overgrown Grapevines
How to Prune Old and Overgrown Grapevines. If you take an established and well-trained grapevine and walk away from it for just one or two years, the resulting overgrown tangle of vines will need some serious pruning. The nice thing about grapevines is that they are extremely hardy plants that respond well to severe pruning. Pruning an old...
If you take an established and well-trained grapevine and walk away from it for just one or two years, the resulting overgrown tangle of vines will need some serious pruning. The nice thing about grapevines is that they are extremely hardy plants that respond well to severe pruning. Pruning an old overgrown vine will force all of the plant's energy stored in its root mass to produce fresh new growth and grapes.
Things You'll Need
Pruning shears
Handsaw
Prune your old and overgrown grapevine in the late winter or early spring while the vines are still dormant and there are no signs of growth.
Find one main branch that you will use as a trunk for your grapevine. Cut it off at 5 feet from the ground using a sharp pair of pruning shears or a small handsaw, making the cut angled downwards.
Cut off all the growth growing from the sides and base of the newly designated trunk except for two side shoots or branches near the top of the trunk, leaving them to be the two main branches of your grape vine.
Remove all the growth in the same way the following year, leaving the basic T-shape of the vine but pruning back the two side branches to three or four buds.
Thin out the previous year's growth every spring, leaving every other cane to bear about 10 buds each and shortening the others to two buds.
