How to Graft a Walnut Tree? Methods and Step-by-Step Guide
How to graft a walnut tree? Please explain the methods. There are several walnut tree grafting methods you can refer to: Cleft grafting is suitable for older rootstocks with thicker trunks (over 4 cm in diameter) and for top-working large trees. For the rootstock selected, saw it off 30 cm from the base, smooth the cut surface, and use a knife to split vertically down the middle of the rootstock to a depth of about...
How to graft a walnut tree? Please explain the methods
There are several walnut tree grafting methods you can refer to:
Cleft grafting Suitable for older rootstocks with thicker trunks (over 4 cm in diameter) and for top-working large trees. For the rootstock selected, saw it off 30 cm from the base, smooth the cut surface, and use a knife to split vertically down the middle of the rootstock to a depth of about 5 cm. Cut a symmetrical slant on each side of the scion, 4-5 cm long, then quickly insert the cut surface of the scion into the cleft of the rootstock so that 3-7 cm of the scion's slant is exposed, and make the rootstock and scion align tightly. If the scion is thinner than the rootstock, align the cambium on the outer side; keep the bark on the inner side of the scion, then tie it tightly with plastic strips to maintain moisture at the joint and promote healing. This grafting method is suitable for early grafting, and it is best that the bark of the rootstock and scion does not separate from the cambium.
Bark grafting with tongue insertion This method is suitable for young trees 3-5 cm thick. When the bark slips easily, choose a white, smooth spot and saw it off, smooth the cut surface, and at the spot where the scion is to be inserted, shave off the old bark, 5-7 cm long and about 1 cm wide, exposing the cambium. Cut the scion into a 6-8 cm long cut surface with a depth exceeding the pith, then make a slanting cut to ensure the whole surface tapers from thick to thin. Use your fingers to pry open the bark behind the cut surface to separate it from the wood, then insert the xylem of the scion between the xylem and bark of the rootstock, so that the bark of the scion covers the cut surface of the rootstock's bark. Finally, tie the joint tightly with plastic strips. Note: do not water before grafting, or saw off the rootstock 10 days in advance to drain sap, so as to avoid excessive bleeding sap reducing the survival rate.
Click to get more walnut cultivation techniques
Click to get more fruit cultivation techniques