Cultivation method of rhododendron

Rhododendron, also known as rhododendron, pomegranate and rhododendron, is a deciduous shrub and deciduous shrub of the rhododendron family. There are about 900 species of rhododendron in the world. China is the country with the largest distribution of rhododendron, with more than 530 species. Rhododendron is one of the top ten traditional flowers in China.

Soil requirement

If you want azaleas to bloom beautifully, you should first be familiar with the soil in which azaleas grow. The pH value is between 5.5 and 6.5. Do not use alkaline or clayey soil. The suitable growth temperature is 12 ℃ to 25 ℃, shade and sunscreen in summer and frost protection in winter. It is best to move indoors. According to the details introduced above, the azaleas will bloom very beautifully if they are cultivated carefully. Cuckoos like fertile soil. The cultivation of rhododendron is the most suitable for the acid humus soil which has been used for many years. Clay permeability is poor, poor drainage, not suitable for use, especially the soil containing lime must not be used.

Fertilization method

When topdressing, do not pursue alkaline fertilizer and water. Burying lard and other oils into the soil after rancidity can make the cuckoo grow vigorously, blossom more and have bright colors. Correct use of nitrogen, phosphorus and potassium fertilizers. Nitrogen fertilizer is sufficient, leaves are thick green, and the growth is exuberant. Insufficient nitrogen fertilizer, light and dull leaves, thin and old leaves, short and thin branches, few flowers and too much nitrogen fertilizer will lead to overgrowth. The phosphate fertilizer foot plant is strong, with many flowers and bright colors. Phosphorus deficiency, few and thin branches, thin petals and short flowering period. When lack of potash fertilizer, the rhododendron branches are slender and the tissue is soft. It is appropriate to apply more nitrogen and potassium fertilizer when young trees and more phosphorus fertilizer when mature trees. If the soil has been alkalized, causing the leaves to lose green and turn yellow and white, ferrous sulfate should be applied. Fat and water should not be thick. Apply thin fertilizer diligently. Excessive concentration of liquid fertilizer will burn the roots and damage the plants.

Moisture requirement

1. Cuckoos are afraid of dryness and waterlogging. If the cuckoo pot soil is too much, the root will shrink, first the leaves will droop or curl, then the tip of the young leaves will become scorched yellow, and the serious ones will not recover for a long time and die day by day. The basin soil is too wet, the ventilation is small, causing rotten roots, the light leaves are yellow and early, the growth stops, and the heavy ones die.

2. If the cuckoo pot soil is too dry and causes root damage, the salvage method is to soak the roots in the water, put them in a cool place, and spray water on the leaves many times. If the yellow leaves fall early due to excessive humidity, the damaged plants should be placed in a ventilated place, the frequency and amount of watering should be controlled, and fertilization should be stopped to prevent disease and insect infection.

3. Cuckoos like humid environment, so they should always pour some water around the basin and on the leaves to keep the surrounding environment moist. If the surrounding environment is dry, cuckoos are very susceptible to disease. The rescue method is to put the sick cuckoo into the pit under the grape and other trees, covered with glass, the pit is often sprayed with water, the grape branches and leaves can penetrate oblique light, and the diseased flowers will slowly return to normal.