1, soil: breeding Petunia suitable for loose fertile and well-drained soil, it is more afraid of too much water, so it is important to choose a well-drained soil.
2, watering: water it in moderation, not too dry or too wet, if the soil is too dry it will wither, if the soil is too wet there will be rotten roots. High summer temperatures should be appropriate to increase the amount of watering, the rainy season to strengthen drainage measures to ensure that the soil is moist and not dry and no water can be.
3, light: it needs plenty of light to grow better, if the light is not enough branches and leaves will be easy to grow in vain, 12 hours of light a day is not only conducive to growth, the amount of flowers will be more, the quality of flowers will be better.
4, temperature: suitable for Petunia growth temperature is 13-18 ℃, the lowest temperature can not be lower than 4 ℃, once lower than the minimum temperature will stop growing, the highest temperature in summer can withstand 35 ℃.
Second, the propagation method
1, cuttings propagation: choose no pest branches cut off about 10 cm, in the cuttings to disinfect the soil, cuttings remaining about 1.5 cm, and then placed in the place of diffuse light can be. To keep the soil moist, about two weeks will be rooted, about 1 month can be transplanted.
2, seeding propagation: seeding time to use seedling tray, can be covered with a layer of thin fine sand, about 2 months time can be germinated.
Third, common pests and diseases
1, white mold: leaves will appear on the large white spots, when serious, it will lead to leaf shedding, found in a timely manner to remove the diseased leaves, and with the spraying of 75% concentration of Chlorothalonil 600 to 800 times liquid.
2, aphids: Petunia's leaves and young stems will be infested, when the aphids appear to be isolated in time, and then sprayed with 10% concentration of oxalic acid emulsion 1000 times.