How to grow azaleas How to grow azaleas?

Rhododendron is a neutral flower that prefers warm, semi-shaded, cool, ventilated, and moist environments. It is required to be loose, fertile, humus-rich acidic (loess) soil, with a pH value between to, and avoid alkaline or clayey soil. The suitable growth temperature is 12 to 25, in summer to shade the sun and protect from the sun, in winter to prevent freezing and keep warm, it is best to move indoors, especially the more delicate rhododendrons such as Western rhododendrons, more attention should be paid to maintenance.

Now the author's practical experience in cultivating azaleas in the past few years is introduced to you for reference

1 The rhododendron's roots are as thin as a hair, and the thick taproots are few, and it is afraid of both dryness and moisture, especially heavy fat. If you water too much, the roots will be soaked in water, too dry, the branches and leaves will shrink, and the leaf petals will fall off, which is a great threat to the plant, and as for watering heavy fertilizer, it will be life-threatening.

2 After the flowering, the residual flowers must be cut off to avoid fruiting and consuming nutrients, and after the new branches germinate, the branches should be properly thinned and left according to the growth of the plant.

3 Rhododendron is best planted in muddy pots, because the mud pots absorb water and breathe, which is conducive to the growth and development of the root system and the flourishing branches and leaves.

4 Potted azaleas should be placed on the southeast balcony carefully, and should be ventilated and moved as little as possible. If it is not ventilated, it is susceptible to black spot disease and a large number of leaf litter.

5 The cuckoo should also have moderate light requirements, and avoid direct light in summer. Fertilization should be mastered thin fertilizer diligently, can be light, and apply organic compound fertilizer on the potting soil once a month. Potassium dihydrogen phosphate was sprayed every 10 days for extra-root fertilization.

Water at the right time, and you can also add vinegar to the water to increase acidity.

6. Thin the buds and leaves in time, remove part of the flower buds and leaves that have grown too much and too dense, so that the air can circulate and the nutrients will be concentrated in the flower buds. After the flower buds are formed, it is necessary to increase the nutrients and apply more phosphorus and potassium fertilizers in an appropriate amount, otherwise the flower buds will be transformed into leaf buds.

7 The main reasons for the loss of leaves and non-flowering of azaleas are: too strong direct light in summer, severe cold and frostbite, too much watering, too much fertilization, too long time indoors, placed in a dark and damp place with poor air circulation, drenched acid rain, etc., so these situations should be avoided during the maintenance process.

8. Turning over the pot and changing the soil, do not need to be carried out every year, generally once every 2 to 3 years, try to damage the roots as little as possible, and the time should be after the flowering or autumn, and at the same time spray Tobuzin to prevent diseases.

9 The insect pests of rhododendrons are mainly red spiders, aphids, etc., which can be sprayed with pyrethroid, etc., and the effect is better, such as not dying after three days, spray again. The disease is mainly melanoma, which is caused by a stuffy environment and lack of light, and measures can be taken to promote air circulation on the one hand, and spray Bordeaux liquid and carbendazim on the other hand.

10 The main method of propagation of azaleas is cuttings. Before and after the selection of new branches, 5 cm to 10 cm long, cut at the fork point, peel off the lower leaves, leave 3 to 4 top leaves, insert 1 3 of the branches into the soil, spray enough water, cover with plastic film. Usually to strengthen management, transplant after one year.

Key points of breeding: 1. The choice of flower pots: terracotta pots or mud pots are preferred, because of their water absorption and strong air permeability, which is conducive to the root growth of rhododendrons.

2. Choice of soil quality: Rhododendron prefers sandy soil with a lot of humus, aeration, and good drainage.

3. Placement: Rhododendron is suitable for a cool and ventilated environment, and should be shaded when the sun is too strong in summer, and the temperature is too high to easily lead to a large number of fallen leaves.

Repotting: It is best to repot after the flowering period, about every one to two years.

Propagation method: 1. Cuttings: This is the most common propagation method, with spring slightly hardened and vigorous branch cuttings as the best, the cutting period is the most suitable from May to October, the length of the cuttings is 7-10 cm, only the upper leaves are left, the lower oblique leaves are removed, 2 3 parts are inserted into the soil, 1 3 exposed to the ground, the cuttings are completed, the surrounding soil needs to be pressed tightly, fully irrigated, and direct sunlight is avoided.

2. Grafting method: Commonly known as grafting and grafting, it is a propagation method that joins different plants together to make a plant. In the rhododendrons, in order to achieve rapid development and need a large number of the same species at one time, grafting propagation is the most suitable, which can increase the adaptability of plants to the environment, improve varieties, early flowering, and improve production and ornamental value.

3. Sowing method: It is an incommonly used propagation method, the operation is time-consuming, and it takes more than three years to reach flowering, but if you want to produce mutations (variants) or breed new varieties, you need to use the sowing method. This method can be used to raise a large number of seedlings in a small area in a short period of time.

Rhododendron can be planted in pots, or it can be planted in shade conditions, except for the west cuckoo, which is a potted plant. dao

The cultivation of Western Jurasson requires both indoor and outdoor specializations.

Environment: Indoor is used for cold protection in winter, and the temperature shall not be lower than -2--3. In order to survive the hot summer, the Jiangnan area is kept outdoors from mid-April to early November, requiring natural shade from deciduous trees, or artificial canopy to create a semi-shady and cool growth environment.

In production, good permeability and low cost tile pots are used. Rhododendron has a shallow root system and slow expansion, so try to use small pots for cultivation to avoid uncontrolled watering and unfavorable growth. About the age of the plant and the size of the pot.

Generally, 1-2 years old with 3-inch pots; 3-4 years old with 4-inch pots; 5-7 years old with 5-inch pots; 8-10 years old with 6-inch pots; 11-15 years old with 7-8 inch pots. It is commonly used in black mountain soil cultivation, with black color and light quality. When you use it, spread it out and expose it to the sun for a few days to pick out the debris.

In addition, peat soil, Huangshan soil, humus leaves, pine needle soil, and even mixed soil with cinder, sawdust, etc., as long as the pH is in between, permeable and drained, rich in humus, can be used. Generally, when you leave the room in the spring or enter the room in the fall, you will put on the pot or change the pot. After potting, place it in the shade for a few days and then move it to its proper location.

The seedling stage is repotted once every 2-3 years. After 10 years, it can be repotted once in 3-5 years.

1. Soil conditions: humus, sand, and garden soil are according to 7:2:

Mix in a ratio of 1. 2. Timely planting: plant azaleas in early spring to a place with shade of tree shadows.

3. Temperature control: In late autumn and mid-October, the plants need to be moved indoors. 4. Scientific fertilization:

Rhododendron peanuts have been applied with thin cake fertilizer water every 10 days for a long time.

1. Soil conditions

Rhododendron is a shade-loving plant, it is best to choose a place with shade when cultivating, and to use well-drained acidic soil, potted can be mixed together with humus, sand, and garden soil in a ratio of 7:2:1, and then add cake fertilizer to improve fertility.

2. Plant in a timely manner

Rhododendron is best planted in early spring or late autumn, if planted in summer, it needs to be shaded so as not to affect the growth of seedlings by strong light, and the root system and soil must be tightly bonded when planting, and the soil surface near the rhizome should be arc-shaped.

3. Temperature control

After planting the azaleas, first place them in a leeward and sunny place to maintain, avoid strong direct light, the suitable temperature for plant growth is 15-25, and in late autumn and mid-October, it needs to be moved indoors to avoid frost damage to the azaleas.

4. Scientific fertilization:

In the late winter and early spring of each year, an organic fertilizer should be applied to the rhododendron as a base fertilizer, and in the spring and autumn growing season, insist on applying a thin cake fertilizer water to the plant every 10 days, which can be fermented at home with rice washing water, fruit peel, vegetable leaves, etc.