Cultivation techniques of African Violet

Potted substrate with high-quality peat moss matrix, light texture, good water permeability, and fertile, the most suitable for the growth and development of African violet. The pH of the matrix is 5- 6.

pot size For the standard size of African violets, 9 cm pots are often used. For large crown diameter varieties, it is recommended to use 10- 12 cm pots.

Potted planting in order to facilitate handling, and reduce plant damage, planting after watering less, wet can be. When planting, pay attention not to press the pot soil too firm, keep loose. According to the growth habits of African violets, plants can not be planted too deep or too shallow, too deep is buried heart leaves, too shallow is easy to lodge. The correct criterion is that the core leaves are flush with the pot soil after watering.

Five to six weeks into the growing season, the leaves of African violets begin to pack together, which requires a thinning pot. Usually only once a pot. For 9 cm pots, generally 1 square meter placed 40- 45 pots. If the pots are opened too early, the microclimate of the plant is not present, resulting in slower plant growth, shorter plants and even delayed flowering. If there is a sub-species situation, you can try to divide the pots twice, the first time, 1 square meter placed 55--60 pots, when the leaves are crowded together for the second time, 1 square meter can be placed 40--45 pots.

The temperature of watering water is very important, the water temperature and temperature can not differ by 5℃, otherwise yellow spots are easy to occur on the leaves. Seedlings should be watered immediately after planting. The first watering can be done from the top of the plant. Later, this method should be changed, otherwise it will hurt flower buds. After planting, fertilizer solution cannot be poured, only water can be poured.

The temperature of temperature growth is 20--21℃, the temperature difference between day and night cannot be greater than 1℃, and the ground temperature is maintained at 18℃.

Shade adaptation light range of 10000--12000 lux. The amount of shading should follow the following simple rule: on a clear day, you will clearly see the shadow of your outstretched palm on the leaf. Keep watching, because even for a short while you're overexposed. It can also lead to disaster. Therefore, although there is indoor shade from the end of February to the beginning of March, the temperature and light in the greenhouse in summer rise too fast, and it is necessary to spray shading coatings on the glass.

The growth period can be shortened by 2 weeks by artificial supplementary lighting from October to March. It is recommended to use fluorescent lamps with an intensity of 2750 lux for 14 hours a day. Stop supplemental lighting when natural light exceeds 2750 lux.

Carbon dioxide fertilization from sunrise to sunset, carbon dioxide concentration maintained at (500--600)×10(negative sixth power), in sunny days or artificial supplementary light, carbon dioxide concentration should be maintained at (700--800)×10 (negative sixth power), when the carbon dioxide concentration exceeds 1000×10(negative sixth power), plants will suffer. No carbon dioxide fertilization at night.