1, Time: The best time to graft old walnut trees is between mid-May and early June every year. 2. Scion: Two-year-old branches with buds should be selected for scion grafting of walnut trees, and the bottom of the branches should be cut into wedges. 3. Grafting method: Before grafting the walnut tree, split a hole in the rootstock, then insert the scion and wrap it tightly.

How to Graft 1 on Old Walnut Tree and Time Selection

The best time to graft old walnut trees is from mid-May to early June every year. At this time, the temperature and humidity are more conducive to the survival of walnut trees. At this time, the scion is in a prosperous period, and the wound after grafting is easier to heal.

Step 2 prepare the scion

It is best to choose healthy scions for grafting older walnut trees. Generally, 2-year-old branches are selected, and the bottom of the branches is cut into a wedge shape, leaving 2-3 bud points. Then, the scion is kept in warm sand and taken out before grafting.

3, processing rootstocks

Before the old walnut tree is grafted, the rootstock should be well treated, a hole should be cut on the rootstock, then the prepared scion should be inserted, and the joint should be firmly tied with plastic film to improve the survival rate of walnut.

4. Water treatment

After the grafting of older walnut trees is completed, the liquid generated at the grafting site should be released, and the plastic film should be taken apart when releasing water, and then it should be wrapped up after all the accumulated water in it flows out. Generally, walnut trees need to be drained 2-3 times after grafting to ensure the survival of the plants.