1, suitable soil

Sunflowers have low requirements for soil, and general soil can be planted. However, if you want sunflower to grow better, it is best to choose weak acid or neutral soil with good drainage performance and humus.

2. Proper watering

It can resist heat itself, but it also belongs to plants that consume more water. The plant is tall, with many dense leaves, and its water absorption is 1.74 times that of corn. Therefore, in daily maintenance, it is necessary to replenish water for the soil in time when it is dry. The requirements for water in different growth stages are also quite different. From sowing to budding, the demand for water is low, from budding to flowering is the peak of water demand, and from flowering to maturity is also high.

3. Suitable temperature

During the whole growth process, as long as the temperature is not lower than 10℃, its growth will not have much problem. The daytime temperature should be around 2 1-27℃ and the nighttime temperature should be around 10- 16℃. In the suitable temperature range, the higher the temperature, the faster it develops.

4. Adequate illumination

Sunflower is a short-day plant, and it is not very sensitive to sunlight. It is necessary to receive sufficient sunlight, at least to ensure that it can receive about 10 hours of sunlight every day, which is conducive to sunflower growth.

Sunflower planting time:

Sunflower sowing time is generally from March to April, and the suitable sowing temperature is 18-25℃. Usually, the seeds will germinate in about 10- 15 days after the temperature is raised to 20 degrees. When planting sunflowers in pots, try to choose a larger flowerpot, and then you can choose weak acid or neutral soil with good drainage performance and humus, and place 2-3 seeds in the middle of the pot about 2cm deep. After sowing, water it, and then put it in a warm and ventilated place to germinate.