Periwinkle is also known as day spring, day grass, day new, thirty thousand flowers, four times spring, clock flowers, Yan Lai red, etc., at present, Taiwan breeding a number of varieties, in recent years, breeding to flower the larger the trend. So what are the breeding methods of periwinkle, the following take a look at it

1, sunshine:

light, especially in the growing period, to give enough light, thus making the leaves green green foliage surface glossy, flowers bloomed more prosperous, half-shade tolerance, can not be placed in the shade for a long time!

2, temperature:

Periwinkle like warm, slightly dry growing conditions, the optimal temperature in 20 ~ 33 ℃, March to July suitable for growth in 18 ~ 24 ℃, September to March the next year is suitable to control the 13 ~ 18 ℃, the winter should be more than 10 ℃, not below 5 ℃, so as not to affect the growth of the plant! Even frost damage.

3, soil:

Ordinary soil can be cultivated, it is desirable to use easy drainage, ventilation and air permeability of the fertile sandy loam, can grow in poor soil, should not be planted in the slate impermeable clay soil, prone to leaf yellow, the phenomenon of flowerlessness, and can not be planted in saline alkaline soil.

4, watering:

Plants hate moisture and fear of flooding, watering should be careful not to water too much, too wet easy to rot the roots, is not conducive to development. Winter plants should be more control of the amount of water, it is desirable to keep dry, otherwise it is very easy to be frozen. Open-air cultivation, encounter rainy days, should immediately give drainage, otherwise it will die due to over-logging.

5, fertilization:

Periwinkle on fertilizer. Requirements are not too high, in can be alternated every 7 to 10 days to apply a compound fertilizer and liquid fertilizer, winter can be appropriately reduced. The bottom of the potting soil is best to lay a layer of base fertilizer mixed with compound fertilizer, moisturizing enough nutrients.

6, pruning:

Carry out daily pruning work, remove the old and weak residual branches, to maintain the nutrients needed for the peak branches, so that the plant shape is beautiful. The growth of periwinkle does not need centering treatment, but as an ornamental plant, in order to maintain the shape of the plant, potted plants after the survival of the plant, should be given 1 to 2 times of centering, the first time is in 3 to 4 pairs of true leaves, the second time is in the new branches of the new branch of 1 to 2 pairs of true leaves, to accelerate the branching and blooming, after the flowers are gone, to remove the residual flowers.

7, disease:

The plant is poisonous, able to resist certain pests and diseases. Seedlings are susceptible to gray mold, seedling sudden collapse disease and other hazards, and beware of drug damage, fertilizer damage, once found, need to be watered with water, give adequate ventilation, reduce the harm. Thereafter, the growing period, the plant's disease is not much, can be used to prevent and solve the general fungicide, pests need to be prevented in advance, usually by the tea moth, red spider, aphids and other violations.