When should northern grapes be pruned in winter? Illustration of how to prune

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1. Winter pruning time

2. Pruning method

When pruning grapes in winter, the time must be controlled well, neither too early nor too late, otherwise it will affect the buds of the second year and be detrimental to growth. It is usually chosen 30 days before the tree enters dormancy to the bleeding period. The specific time is between late October and mid-to-late November. If it is grown in a greenhouse, it should be done before covering.

1. Winter pruning time

The time of winter pruning of grapes must be controlled well, neither too early nor too late, otherwise it will affect the storage of nutrients and be detrimental to the germination and growth of the second year. . The best time is 30 days before the tree enters dormancy to the bleeding period. If it is cultivated in a greenhouse, it should be carried out before covering with film. The specific time is between late October and mid-to-late November.

2. Pruning method

1 2. Pruning length: When pruning, the specific length of pruning depends on its growth, the rate of fruiting branches and the height of the flower buds. Under the same conditions, strong branches with good nutritional status should be left as long as possible. Weak branches with better distribution of flower buds should be cut short. Extended branches should be kept longer, and preliminary branches should be cut short. In addition, if there is insufficient fertilizer and water, and the area is relatively dry, it is mainly necessary to prune it short.

2. Pruning position: The tissue at the notch will be loose. Water evaporates easily, so when pruning, the cutting edge should be about 2-4 cm away from the bud eye to prevent too much water from evaporating, which will lead to an increase in dry branches. The cut should be on the opposite side to the cut bud.

3. The amount of buds left: The amount of buds left must be controlled Well, not too dense, not too sparse. Usually the amount of shoots left in the second spring is twice as much. If 15-20 buds are left on the new shoots on the fence surface, then 30-40 buds should be left during winter pruning. If short-shoot pruning is used, 8-10 female branches should be left as a result.

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