Cornus officinalis has a long time of sowing and propagation. The seedlings can bear fruit more than 10 years after being planted, while the grafted seedlings can bear fruit and flowers in 2-3 years. The early fruiting and benefit of Cornus officinalis can be achieved by grafting.
In general, the rootstock of Cornus officinalis is the seedling of its own good variety. The grafted scions should be taken from high-quality mother trees with high yield, strong growth and no pests.
Generally, in the middle and late March, Cornus is grafted with the inserted skin. From the middle of July to the middle of August, dogwood is usually budding.
The grafting of Cornus is mainly to cut off the part of Cornus which is 5-10cm close to the ground, level the cut, cut a knife from top to bottom with the grafting knife on the windward side to reach the xylem, and then pry a crack in the cortex of the interface with the knife. Cut the scion into 15cm long segments, and cut a 3-5cm long oblique section at the lower side of the back of the main bud to expose the cambium. The cut scion shall be contained in the mouth and kept moist for use. Next, place the scion slope inward and the tip against the cutting seam, press the cutting edge of the rootstock tightly and insert the scion slowly, tap the interface gently with the grafting knife to make it tight, and finally bind the interface with plastic film. When the scion seedling is 50cm high, the plastic film is cut with a knife.
The bud grafting of Cornus is to select mature and robust scions first and take down the buds. The bark of the rootstock with the same size as the bud block was cut with a knife at the position 5 ~ 10cm from the ground. Insert the buds to be grafted into the cutting part of the rootstock, and then bind them tightly with plastic film, but expose the grafted buds. After grafting for 7-10 days, the interface is healed, the bandage can be untied, and the trunk can be cut off 5cm above the bud.
