It is best to choose a plot with no waterlogging, good air permeability, convenient irrigation and drainage, sunrise and high organic matter content, and apply 3m3 organic fertilizer, 3kg diammonium and 1kg potassium fertilizer per hectare. Generally, transplanting begins in late May and ends before the end of May.

2. Transplanting technology

Marigold should be watered with water at the bottom one day before transplanting, which is beneficial to the growth of flower seedlings. Using 7cm ridge for hydroponics, adding a proper amount of phoxim in water can prevent pests, with a spacing of 35-4cm and 2,6-3, seedlings per mu.

3. Fertilizer and water management

Marigold can be planted in sunny, loose and fertile soil without fertilization. If the soil condition is poor, the leaves should be sprayed with .3% urea solution three times in the growth season such as bud pregnancy and flowering, and watered in summer according to the situation, but not in autumn, winter and spring.

4. Plastic pruning

Pruning marigold is relatively simple. Picking lateral buds at seedling stage is beneficial to the growth of terminal buds. In summer, timely pruning is needed to control the height to avoid excessive growth. At the same time, excessive stems and leaves and residual flowers should be cut off in time to avoid excessive nutrition, which is beneficial to the growth of flower seedlings.

5. Pest control

Marigold pests include grubs, grubs, red spiders, aphids, etc., and .75-1kg of 3% carbofuran or 5% phorate granules are used for grubs and grubs per mu.

6. Disease control

The diseases of marigold are mainly damping off, leaf blight, root rot, etc. We should give priority to prevention, prevent diseases in time, and diseases are prone to occur in bud stage. We should apply fungicides once before bud stage, or soak seeds for disinfection before sowing.

7. Timely harvesting

The harvesting time standard of marigold is that the petals are fully unfolded and the stamens are partially open or not. When it reaches maturity in 1989, the yield is relatively high, the flowers are free of water drops and mildew when harvested, and the pedicel length is less than 1cm. After harvesting, it will be delivered to the flower factory immediately.