As long as the temperature is suitable, it can be carried out all year round, but it is most suitable in early summer and after autumn.
He Sha, vermiculite and peat were selected as cuttings, and the new shoots that germinated in the same year were selected as cuttings. The cuttings were cut from the base, and the leaves at the base were cut off, only 2-3 pieces remained.
Insert the branches into the soil, pour enough water and cover the shade properly. If the air humidity is low, cover the branches with plastic film to keep moisture. Within half a month, spray water 3-4 times a day, and take root 1 month later. (it's hard to avoid hollowness in simple words. I've compiled a detailed cutting step chart for you. Go and have a look.)
For some varieties with more difficult rooting, the method of layering propagation will be adopted, and the survival rate of layering is higher from late October to February.
Select the 2-3-year-old branches, cut in the part of the pressure strip until you see the wood layer inside, then wrap the incision with wet mud, cover with plastic bags, keep the mud ball moist, and take root 4 months later. After rooting, cut off the branches and plant them with mud balls.
Grafting usually takes place in June or after autumn.
Select 3-4-year-old plants as rootstock, and cut 3-5 cm shoots as scion. Cut a small hole in the rootstock, insert the branch into it, cover it with plastic film, and then put it in the shade. The wound can be healed after 2 months.
The advantage of grafting is that it can graft varieties of different colors and Florescence on the same plant, greatly improving the ornamental value.
Most rhododendrons can bear fruit. From October to January every year, the seeds are picked and dried in a cool and ventilated place. Pot sowing can be carried out from March to April, because the seeds are small, the flowerpot and soil should be disinfected before planting, and the seeds should be evenly sprinkled in the soil. Sow with a layer of glass or plastic film on the back cover. The seedlings will grow in May to June. When 2 to 3 leaves are grown, plant in the basin. Pay attention to 3 plants in each basin.
