How many times can sunflowers be planted in a year (once)? How many days is the growing period?

Sunflowers can only be planted once a year , mostly in spring, and mature in about 60 days. The temperature for sunflower seeds to germinate is between 18-25 degrees. The specific planting time should be determined based on the local climate temperature, and the planting time for different varieties is also different. It grows quickly, and it can sprout and grow soon after sowing, and bloom in summer.

Sunflower Planting Conditions

The most suitable temperature for sunflower germination is 31-35 degrees, and the highest acceptable temperature is 44 degrees. However, as long as the growth temperature of the sunflower is not lower than 9 degrees, it can grow and develop normally. The more suitable the temperature, the faster it grows and develops.

Because sunflowers have a strong phototropism, sufficient light can prevent the seedlings from growing too tall, promote the growth of stems and leaves, increase yields and improve the quality of sunflowers. However, sunflowers can also grow normally in areas with less sunlight.

Sunflower harvest time

Generally speaking, sunflowers will mature within 60 days after they are sown and germinated. If sunflowers are planted around March or April in spring, they will bloom in about 50 to 80 days, and the fruits of the sunflowers will mature in July to September.