Viola viola is suitable to grow in the soil with medium fertility and good drainage at an altitude of 100 to1500m. Can't continuous cropping, otherwise it will lead to variety degradation.

Second, the light

Sunshine time should be guaranteed every day. Avoid strong sunlight when raising seedlings, otherwise it will easily lead to hard stems and leaves and poor quality of flowers. It is best to breed in a ventilated place where you can see light all year round, and you can breed in a greenhouse.

Third, the temperature

Its optimum growth temperature is 18-22. In summer, we should pay attention to avoiding summer heat and avoid being exposed to high temperature for a long time.

Fourth, water

Suitable for growing in a relatively humid environment. After planting, water should be poured several times continuously to slow down the growth of seedlings and keep the surrounding air moist. However, watering should be moderate, and preparations should be made for drainage and waterlogging prevention to prevent root rot and death.

V. Fertilization

Thin fertilizer should be applied frequently, and 500 times of compound water fertilizer and 500 times of urea diluent can be applied at intervals during the growth period. Only 1000 times of potassium dihydrogen phosphate and compound fertilizer were applied after the initial flowering period.

VI. Matters needing attention

1. Pay attention to the prevention and control of pests and diseases. In spring and autumn, when pests and diseases are frequent, root irrigation with 80% trichlorfon 1000 times solution every 5-7 days can effectively control them for 2-3 times in a row. Pay attention to ventilation, otherwise it will increase the probability of disease and overgrowth. 2. Weeds around should be cleaned frequently. If it is not cleaned in time, it will easily lead to messy roots and slow growth.