Season selection

When flowering in summer is needed, sowing should be carried out from February to march in early spring, preferably under the condition that the temperature and humidity can be controlled. If you plan to sow in the open air, you should sow in the middle of April when the temperature is appropriate. When the temperature is appropriate, the seedlings can emerge in about a week

It needs to bloom in autumn, which is used to celebrate the national day. It can be sown from July to August. The Persian chrysanthemum planted in this season is short and strong, neat and beautiful

Soil selection

The sowing medium should be loose soil rich in organic matter, and a certain amount of rotten organic fertilizer should be applied before sowing

When sowing, the seeds and a certain amount of sand shall be mixed evenly, and evenly sown on the seedbed, and then covered with soil for about one centimeter. After sowing, the soil humidity should be maintained and the temperature should be controlled at about 18 ℃ to germinate

Seedling maintenance

When the seedlings grow 4 to 5 true leaves, they can be transplanted into the nutrient bowl and picked. There is no need to apply topdressing during seedling growth period, so as not to cause excessive growth of branches and leaves and affect flowering

The plant type of Persian chrysanthemum is relatively tall, the stem is thin and weak, and the flowers are large and beautiful. It will fall down in case of wind or other bad weather, affecting the ornamental value. Therefore, it is necessary to pick the heart many times and reduce watering during the whole growth process of Persian chrysanthemum. This can not only promote branching, but also dwarf the plant and avoid lodging during the growth process

Pest control

Summer is the season when flowers and meat are most likely to breed diseases and pests, and Persian chrysanthemum is no exception. Especially the seedlings planted in summer are more vulnerable

Common diseases of Persian chrysanthemum include powdery mildew, gray mold, etc., and common pests include red spider, aphid, etc

Prevention and control methods: when planting, the density should not be too large, and good ventilation and light transmittance should be maintained; After the disease, the diseased leaves and plants should be cut off and destroyed in time to prevent re infection; At the initial stage of onset, spray 15% Triadimefon wettable powder 1500 times, or 10% lewubing wettable powder 1200 to 1500 times. Use the two drugs alternately for 2 to 3 times

At the initial stage of red spider occurrence, spray 40% dicofol emulsion 1000 to 1500 times