The planting method of medallion chrysanthemum how to reproduce

Medallion chrysanthemum is a very beautiful flower. Medallion chrysanthemum is also called African sunflower, because its whole inflorescence is like a medallion. Here's how to plant medallion chrysanthemum and how to reproduce it.

Planting method of medallion chrysanthemum

1. Lighting: medallion chrysanthemum likes sunshine, likes to grow in cooler places, is resistant to drought and barren soil, and is semi-cold-resistant, so it can survive the winter smoothly in mild areas in winter. The growth and flowering period need plenty of sunlight, such as insufficient light, it will affect the growth, sufficient sunshine will make the flowers bright and blossom continuously.

2. Temperature: medallion chrysanthemum is resistant to low temperature and not afraid of frost, but it can not tolerate freezing for a long time. Warmer areas need to be covered for overwintering before winter comes, and cold areas in the north cannot overwinter in the open field. Medallion chrysanthemum has a wide range of adaptation to temperature and light, and can grow well at 10 to 30 ℃. Greenhouse cultivation blossoms all the year round.

3. Watering: medallion chrysanthemum is sensitive to water. Although the stems and leaves need soil moisture during the growing period, there is too much soil moisture in the rainy season, and the plant is easy to be waterlogged and cause the whole plant to die. At the same time, high temperature in summer, the air humidity should not be too high, basin soil should not be stagnant water, otherwise it is disadvantageous to the growth and flowering of medallion chrysanthemum.

4. Soil: the sandy loam with fertile, loose and good drainage is selected. Potted soil can be mixed with the same amount of culture soil, rotten leaf soil and coarse sand.

5. Diseases and insect pests: leaf spot disease is common and can be sprayed with 1000 times of carbendazim wettable powder. Pests are harmed by red spiders and aphids, which are sprayed with 2.5% fish rattan essential oil 1000 times.

How to reproduce medallion chrysanthemum

1. Sowing and propagation: spring sowing in April or autumn sowing in September, a small amount can be sowed in pots, 560-580 seeds per gram, seeding amount of about 15 grams per square meter of seedbed. Sowing, the seeds are covered with fine soil of about 0.8 cm. The optimum temperature for germination was 16-18 ℃ and germinated 14-30 days after sowing. The seedling has a 4 cm seedling plate with a pair of true leaves. Or open a ditch to plant seedlings at a distance of 8 square meters. In the seedling stage, the temperature should be controlled from 15 to 25 ℃, and the soil moisture should be controlled moderately to fully see the light. Cool down 5-7 days before planting, increase ventilation, moderate control of water to refine seedlings. Planting in the open field after no frost. Seeds in some areas have the ability to self-sow and reproduce.

2. Ramet propagation: before the stems and leaves grow from March to April, the overwintering mother plant is dug out, and the mother plant is poured out of the flowerpot and cut longitudinally from the root neck of the plant cluster with a knife, but each ramet must have bud head and root system, which can be potted directly.

3. Cuttage propagation: it is often carried out in spring and autumn, indoor cultivation can be carried out all year round, and open-field cultivation is carried out in the cool spring and autumn season. Cut the buds with stem nodes and leave the top 2 leaves. If the leaves are too large, you can also cut off 1 big 2 to reduce the evaporation of foliar water. Insert sand bed, room temperature 20-24 ℃ and keep high air humidity, and take root 20-25 days after insertion. If treated with 0.1% indole butyric acid for 1-2 seconds, rooting is faster.

4. Tissue culture propagation: stem tips and buds are commonly used in explants. After disinfection, the shoot tip was inoculated on MS medium supplemented with 1-3 mg / L 6-benzylaminoadenine and 0.2mg / L naphthoacetic acid to induce callus and differentiate buds. Then transferred to MS medium with 1 mg / L naphthalene acetic acid and cultured for 30-40 days, the seedlings took root and formed complete plantlets.

5. Sprouting: each bud is inserted into a well-drained substrate. When sprouting will flow out of the emulsion, to be fully washed, so that it absorbs water and then cut in, it is easy to root. After rooting, it is the same as the ramet, first raise seedlings with seedlings, and then plant in the next spring. After rooting, it was cultivated in a container with a diameter of 8 cm.