What is the season for sunflowers and how to grow them?

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Sunflowers generally bloom in summer and autumn and are summer flowers. If sown in March-April, the flowering period is July-August and the seed maturity period is August-September. It is best to plant sunflowers in March-April, in a place with flat land, medium fertility, and convenient irrigation. Ensure that the sowing temperature is between 18-25°C. Different growth stages have different demands for water and fertilizer, and water and fertilizer management must be carried out in a targeted manner. It should also be given sufficient sunlight to promote vigorous growth of stems and leaves.

1. What season is sunflower?

Sunflower is an annual herbaceous plant, and the flowering period will vary depending on the variety. But it generally blooms in summer and autumn and is a summer flower. If sown in March-April, its flowering period will be in July-August and its maturity period will be in August-September. There are two kinds of flowers on the flower disk: ligulate flowers and tubular flowers. There are 1-3 layers of tongue-shaped flowers, which are borne on the edges of the flower disk and are asexual flowers. The tubular flowers are located inside the tongue-shaped flowers and are bisexual. The size and color of the flower disk vary depending on the variety, generally orange, light yellow and purple.

2. How to grow sunflowers

1. Planting time: Sunflowers are best planted in March-April. At this time, the temperature and humidity are suitable for planting, and the survival rate will be higher.

2. Planting site selection: The planting site can be chosen in a place with flat land, medium fertility, convenient irrigation, and low soil viscosity.

3. Temperature: The suitable temperature for sowing is between 18-25℃. Usually planted after the temperature rises to 20 degrees, the seeds will begin to germinate in about 5-7 days. Seeds will begin to germinate when the ground temperature is stable above 2°C, and can germinate and take root when the temperature is 4-5°C. The seeds can germinate when the ground temperature reaches 8-10°C. During the entire growth process, sunflowers can grow normally as long as the temperature is not lower than 10°C.

4. Water and fertilizer: The requirements for water and fertilizer at different growth stages are also different. There will be differences. Between the seedling stage and the budding stage, the need for water and fertilizer is low. The demand for water and fertilizer will increase significantly during the budding and flowering stages. The need for water and fertilizer must be met in time, otherwise the yield will be seriously affected. The demand for water and fertilizer during the maturity stage is also high, but not as high as before. The amount of watering and fertilization should be appropriately reduced.

5. Light: It needs sufficient sunlight, and its seedlings, leaves and flower discs have strong phototropism. Adequate sunshine can prevent leggy growth, promote vigorous growth of stems and leaves, and increase fruiting rate.

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