1、 What kind of plant is sunflower

Sunflower is a plant of the genus sunflower in the composite family. It is named because its flower plate rotates with the sun. Its plant is generally 1-3.5 meters high, up to about 9 meters. It is an annual herb. It has strong adaptability and low requirements for soil, and can grow on all kinds of soil. It can withstand high temperature and low temperature, and is more resistant to low temperature. The best temperature range is 21-26 ℃. The flowering period is from July to August. It mainly has two functions: edible and ornamental

2、 Introduction to double petal sunflower

Double petaled sunflower is a variety of sunflower. It is a plant of Compositae and sunflower. It originated in North America and was later introduced into China. It is an annual plant. The plant is short compared with ordinary sunflowers, and the flowers are larger and brighter than ordinary sunflowers. The flower has double petals, the color is golden yellow, the flower shape is compact and embroidered spherical, the disc diameter is 10-13cm, and there are many flowers. The flowering period is from March to November, and the flowering time is long. It can also be eaten and pressed, but its economic value is not as good as ordinary sunflowers

3、 How to plant double petal sunflower

The planting method is roughly the same as that of ordinary sunflower, with little difference between them. The best sowing time is in the summer with sufficient light and rain, and the temperature should be kept at about 20 ℃. After the seeds germinate, the seedlings should be refined. At this time, the water should be controlled properly, but the soil should not be too dry, otherwise the seedlings will wilt. There should also be sufficient light, not shade. Some thin fertilizer and water can be watered to ensure that the seedlings grow healthily