Reproduction of Rhododendron serrata

Reproduction of Rhododendron serrata

1. Seeding method

The sowing of Rhododendron hornensis is generally carried out in April in spring, and it is most suitable when the temperature is about 22-24℃. Before sowing, be sure to disinfect the soil. Rhododendron seeds are relatively small. After sowing, there is no need to cover them with soil, just press them lightly with your hands. The seeds will germinate about two weeks after sowing, but the growth rate of the seedlings is relatively slow. They can be transplanted when they grow two leaves. When transplanting, it is best to use loose, breathable, nutrient-rich, well-drained, slightly acidic sandy soil, and pay attention to keeping the soil moist. It should be noted that it takes four or five years for the azalea propagated by sowing to bloom. If you want to see the azalea bloom as early as possible, you can choose other methods of propagation.

2. Cutting method

The survival rate of azaleas propagated by cuttings is very high, and their growth and development are relatively fast and stable. It is the most commonly used breeding method. Cuttings are usually carried out during the rainy season. Choose a new and strong young branch, cut off the leaves at the bottom, and leave a few new leaves and buds at the tip. Insert the branch into the soil and compact it, keep the soil moist, and maintain it properly. It will take root and grow in about one and a half months. Pay attention to proper shading for new seedlings, and gradually resume normal maintenance after their growth stabilizes.

3. Grafting method

If grafting is used for reproduction, it is best to do it during the rainy season. Choose Rhododendron as the rootstock and a section of vigorously growing young branches of Rhododendron hornensis as the scion. Trim off the leaves at the bottom of the scion, keep the tender leaves at the top, sharpen the bottom, cut an opening about three centimeters long on the rootstock, then insert the scion into the incision and tie it up. Pay attention to maintaining humidity. New branches will survive in about two months, and normal maintenance should be gradually resumed later.

4. Layering method

Layering is usually carried out in spring, and is most suitable from April to May. Select mature and strong branches, ring-cut and peel the bark at an appropriate position ten centimeters away from the tip, then press the branch into the soil, and be careful to keep the soil moist. After new roots grow out, cut off the new roots and plant directly in the pot.

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