Do sunflowers rotate with the sun? When do sunflowers bloom?

Sunflowers are named because their inflorescences rotate with the sun. They are also known as sunflowers, sunflowers, sunflowers, morning glory, and sunflowers. It seems that sunflower seeds can be eaten all year round in the market, but many people don't know when to harvest sunflower seeds. Let's open the Encyclopedia Knowledge Network to learn more!

Contents of this article

1. Do sunflowers rotate with the sun?

2. When does the sunflower bloom?

3. In what season do sunflowers usually mature?

Do sunflowers rotate with the sun?

Sunflowers will rotate with the sun. When the sunflower is in the bud stage, it will rotate in the direction of the sun after the sun comes out, because there is auxin distributed in the receptacle of the sunflower. Under the sunlight, the auxin content on the backlit side of the sunflower increases, which will stimulate the cells on the backlit side to elongate, accelerate the growth of the stem on the backlit side, and make the stem bend toward the light source, causing the sunflower to rotate toward the sun.

The sunflower is named because its inflorescence rotates with the sun. Its other names include sunflower, sunflower, sunflower, morning glory, and sunflower.

The growing period of sunflower is generally more than 85-120 days, and the entire growing period is divided into four growth periods: seedling stage, bud stage, flowering stage and maturity stage.

After the sun sets, the sunflower will turn back to the east. After the sunflower disk blooms, it will no longer rotate towards the sun, but will remain fixed towards the east.

When do sunflowers bloom?

March is the best season for planting, as it is neither too cold nor too hot. Many people plant sunflowers at this time, but they bloom in July and August.

In fact, sunflowers can bloom all year round, but it is mainly affected by temperature. When a certain temperature is accumulated during the growth process of the plant, it will bloom. From the formation of the sunflower disk to the blooming of the ligulate flowers and then to the full bloom of the tubular flowers, it usually takes 6-9 days. The second to fifth days are the peak flowering period, and the number of flowers is about 75%, so enthusiasts who want to photograph sunflowers in full bloom must master the time.

When do sunflowers usually mature?

It seems that sunflower seeds can be eaten in the market all year round, but many people don’t know when to harvest sunflower seeds.

One to two months after the sunflower blooms, the ligulate flowers in the disk will bear fruit, which are sunflower seeds. Sunflowers planted in March will generally have sunflower seeds in July to September, but in some places it may be delayed until October, which has a lot to do with the local climate and environment.