How to Plant Rhododendron (Cultivation Techniques and Management of Rhododendron)

There are many kinds of rhododendrons with gorgeous flowers, which are of great ornamental value. According to the pattern and color of flowers, rhododendrons can be divided into many kinds. Its leaves are ovoid or ovoid, with a length of1.5-5cm and a width of 0.5-3cm, with fine teeth at the edge, dark green at the top, sparsely strigose, pale white at the bottom and dense brown strigose.

Flowers clustered at the top of branches, corolla wide funnel-shaped, rose or dark red, 3 in length. Cm, 2 cm wide. The flowering period is April-May and the fruiting period is June-August.

Rhododendron growth environment

Rhododendrons like shade, neither cold nor dry. The optimum growth temperature is 12℃ to 25℃, which is suitable for growth in a cool, humid and ventilated environment. If the temperature is too high, new leaves will grow slowly. In addition, azaleas like acidic soil.

Rhododendron cultivation method

Rhododendron is usually propagated by sowing, cutting and grafting, and layering and branching are also feasible.

Cultivation precautions

1, illumination and temperature: According to the growing environment of rhododendron, attention should be paid to keeping the soil ventilated during the cultivation process and choosing acidic soil with good humus. Provide proper lighting and avoid direct glare.

If the light is too strong, the young leaves will be easily burned, and both the new leaves and the old leaves will be burnt, which will lead to plant death in severe cases. The suitable temperature for its growth is 15~25℃, and it should be moved indoors in winter and placed in a sunny place to keep out the cold and keep warm. Summer needs shade.

2, fertilizer and water management: azaleas like to be wet, so keep the soil moist, once a week in winter. Don't water it unless you do it. If water is needed, it should be thoroughly watered, mainly with acidic water. Rhododendron needs more water during the growing period, which can be reduced appropriately before and after flowering. In addition, azaleas like thin fertilizer, and the amount of fertilizer should be adjusted according to the needs of different growth periods of azaleas. Fertilize once a week during the growing season, not in summer. After September, applying 20% ~ 30% phosphorus-containing liquid fertilizer every 10 day can promote the growth of rhododendron buds. After 10 months, the growth basically stopped and fertilization was no longer needed. Fertilization with good pH value can choose fertilizers with moderate fertility, long fertilizer efficiency and high nitrogen, phosphorus and potassium content.

3. Pest control: Strengthen cultivation management and pay attention to the growth of azaleas. Once pests are found, they should be dealt with in time. Rhododendron root rot, Rhododendron spider disease and Rhododendron gray mold are all common diseases and insect pests of Rhododendron.

Rhododendron root rot: deal with dead plants and pot soil in time. Increase light and potassium fertilizer in the morning and evening to improve the disease resistance of Rhododendron.

Rhododendron spider: You can choose to spray 10% Diwanghua EC 1000 times or 705 1 pesticide (mirex) 3000 times.

Rhododendron botrytis: 50% clonidine 1000 times solution or 50% carbendazim wettable powder 1000 times solution can be used for control.