1. Growth period: If the blueberry planted for 2-3 years has not reached the full fruit stage, it is necessary to cut off many branches on its crown, such as long branches and weak branches. 2. After the fruiting period: After the fruiting period, blueberries need to be pruned once, but they can't be pruned immediately after the fruit is harvested, so they should wait about 15 days before pruning. 3. Pruning in winter: Pruning can be started in winter after all the leaves of blueberries have fallen.

1. When will the blueberries be pruned?

1, growth period

(1) Blueberries must be pruned during the growing period. If the blueberry planted for 2-3 years does not bear fruit completely, you can prune many branches on the crown, such as overgrown branches and slender branches.

(2) After the five-year full fruit period comes, topping and pruning must be carried out to control its height so as to sprout more lateral buds.

2. After the fruit period.

(1) Blueberries should be pruned once after the fruit period, but this time must be adjusted. You can't prune the horse after the fruit is harvested. You have to wait about 15 days.

(2) In this way, photosynthesis of leaves can transform some nutrients and store them in trees, and pruning these nutrients before they are used can prevent them from losing.

3, winter pruning

(1) Pruning should also be carried out in winter, and the blueberries can be pruned after all the leaves have fallen.

(2) It is mainly to cut off overlapping branches, cross branches, cross branches, old branches and weak branches in the crown. Cutting off these unnecessary branches can promote the flowering and fruit quality of blueberries.

Second, the considerations of blueberry pruning

1, be sure to use special tools or sharp scissors when trimming, so that the left incision will be smoother and easier to heal. Be sure to trim moderately, and don't cut too many branches and leaves at once. After pruning, some disinfectant can be applied for disinfection and sterilization, and some fertilizer can be added to supplement nutrients after pruning.

2. For young orchards, the principle of pruning is generally to remove the weak and retain the strong. Except weak branches, diseased branches, dead branches, cross branches and overlapping branches close to each other must be thinned, leaving 3-5 strong branches that open outward.

3. For mature orchards, the principle of pruning is to transform the open tree shape, maintain the number of fruiting branches and stabilize the tree potential. When blueberries enter adulthood, the crown will be very high and the inner cavity will be easily covered. At this time, pruning is mainly to control tree height and improve lighting conditions, mainly to thin branches.