Before sunflower cultivation, seeds with full grains should be selected, so that the emergence rate will be higher in the later stage. If you plant seedlings, you should buy strong ones, which are free from pests and diseases, and the roots are intact, so that the seedlings can recover and grow faster after planting, and it is also convenient to manage.
Growth conditions of sunflower
Sunflower likes warm climate, and it also likes sunshine. If this plant grows in a dark and humid place, it will grow badly. In addition, it is extremely barren and can adapt to most soils.
Sunflower planting time
1. planting time: there is no strict requirement on the planting time of sunflower. It is best to plant in spring, usually around April, because the climate is mild at this time, which is suitable for plant growth and has a high survival rate.
2. Planting temperature: When planting, the ambient temperature is between 15-25℃, which is conducive to rooting, and sunflower seeds are very small. Too low or too high a temperature is not conducive to the growth of sunflower seeds.
3. Planting soil: Sunflowers should be planted with loose and breathable peat soil or sandy soil to raise seedlings, evenly spread seeds and cover them with a thin layer of soil, spray a small amount of water with a fine sprayer and place them in a bright and ventilated place. Generally, it can germinate in about 10 day, and can be transplanted into a pot after one month.
Sunflower planting method
1, prepare soil; The growth of sunflower needs to use loose and fertile soil with good permeability and drainage, humus soil, garden soil and Shahe soil, and a small amount of organic fertilizer can also be added to increase soil organic nutrients.
2. Sowing and planting: Choose full and well-growing seeds and scatter them evenly in the soil. Keep the temperature above 20 degrees, pour a little water and cover it with a thin layer of soil. Sunflower seeds will take root and sprout in a warm and humid environment.
3, cultivating and sprouting; Sunflower seeds need sufficient light time after germination, at least 8 hours a day, and the temperature should be kept above 20 degrees. After 7- 10 days, diluted NPK compound fertilizer should be used and watered every 2-3 days.