Culture methods and matters needing attention of potted rhododendron

Rhododendron is a beautiful Yingshan red, blooming in spring, blooming is the bright red all over the mountains is very beautiful. Seeing such beautiful flowers, many friends want to raise some at home, so what are the breeding methods and points for attention of potted azaleas?

What is the cultivation method of potted rhododendron?

1. Flowerpots and potted soil

(1) flowerpot requirements: muddy flowerpots, plastic pots, porcelain pots, pottery pots and so on can be used.

(2) the size of flowerpot: the size of flowerpot for planting rhododendron seedlings is the same as the crown diameter of seedlings, the size of flowerpot at seedling stage is 3 × 4 of its crown diameter, and the size of flowerpot at seedling stage is 1 / 2 of its crown diameter.

(3) preparation of basin soil

Rhododendron prefers acidity (pH value 4.5-5.5), loose, well-drained soil. Mix rotten leaf soil and sandy soil with cake fertilizer and barnyard manure.

2. Upper basin

Potted rhododendrons are generally potted from March to April in spring and can also be potted in autumn. Transplant with soil when putting on the pot, and pour water into the shade after planting.

3. Watering

Keep the basin soil moist during the growing period, need more water during the flowering period from April to June, spray water to the ground and leaves in the high temperature season from July to August, keep the air moist, cool the temperature gradually after September, gradually reduce the water content of the basin soil, and enter the dormant period in winter. Less watering should be done.

4. Fertilization method

The roots of rhododendron are shallow and thin, and their absorptive capacity is weak, so we must grasp the principle of "thin fertilizer and diligent application" when applying fertilizer. If the fertilizer is too thick or the raw fertilizer is not fully mature, it is easy to cause rotting roots, scorched leaves and even death. Especially for 1-and 2-year-old seedlings, we should pay more attention to the amount of fertilizer, otherwise it is easy to cause fertilizer damage.

5. Pruning

Rhododendron has strong germination, many branches and dense branches. after flowering, dense branches, weak branches, withered branches, diseased branches, residual branches, cross branches and long branches should be cut off to facilitate ventilation and light. Do not cut short the reserved branches. Because the leaves of azaleas are mostly clustered at the top of the branches, a new branch and a cluster of new leaves will grow after flowering, and the old leaves will fall off immediately, and then the terminal bud begins to differentiate into flower branches in the coming year. If this branch is cut off, it will affect the number of flowers in the following year.

II. Matters needing attention in rhododendron culture

(1) Rhododendron is a typical acid soil flower. In order to prevent yellowing, 0.2% ferrous sulfate should be applied every 20 days. If it is found that the leaf color is yellow, spray 0.2% ferrous sulfate directly to the leaf surface, which can change the leaf from yellow to green.

(2) the azaleas grow slowly and the pots can be changed every two years. The pots should be changed after the flowers fade. Fill in the new culture soil when changing the basin. Generally, 8 parts of rotten leaf soil (peat soil), 1 part of garden soil and 1 part of river sand were mixed and a small amount (about 50 grams per basin) of rotten oil residue or chicken manure was added as base fertilizer.

(3) during the growth period, adventitious buds are often easy to sprout on stems and branches, which should be erased in time so as not to disturb the plant type. After pregnancy, if you find that there are too many buds, you should remove the excess buds and leave only one bud per branch in order to concentrate nutrients and promote the flowers to be colorful. The residual flowers of rhododendron are not easy to fall off after flowering. In order to reduce nutrient consumption, the residual flowers should be removed in time to promote the germination of new buds.

Rhododendron is beautiful and colorful, strong germination, resistant to pruning, unique root pile, is an excellent bonsai material, interested friends can try to plant.