When is the right time to sow oil sunflower?

Sunflower sowing time

Oil sunflower is the abbreviation of oil sunflower. It is an annual herb and can be planted twice a year.

Sunflowers can be sown in spring and can be cultivated when the soil temperature is above 15 degrees. If they are sown in summer, the flowering and filling period of sunflowers cannot be in a hot and rainy time. Therefore, it is best to sow them in mid-June, and it is better to sow them later than earlier.

Oil sunflower sowing method

After the oil sunflower is germinated, it can be directly sown in the soil. Pay attention to the spacing. It can be sown in holes at equal distances, with a row spacing of 50 cm. 1-2 seeds can be sown in each hole. After sowing, it can be covered with plastic film to keep warm and moisturize. If enough base fertilizer is applied, the number of fertilizations can be reduced during the growth period.

Key points for oil sunflower planting

After the oil sunflower seedlings emerge, they should be checked and supplemented in time. If the distance between the seedlings is large, they need to be transplanted. When a pair of true leaves appear, inter-row cultivation and weeding should be started. During the growth period, they need to be watered 3 times and fertilized 2 times. During the budding period, a thin fertilizer can be sprayed on the leaves. When the back of the sunflower disk turns yellow, it can be picked.

During the growth period of sunflower, diseases and pests will appear. When using pesticides, you need to follow the instructions and strictly abide by the safe use rules of pesticides. You must prevent and control cutworms as early as possible during the seedling stage.

Sunflower mature harvest

It takes about 90 days from sowing to harvesting of sunflower. The growth cycle of spring sowing is different from that of summer sowing. It takes 100 days in spring and only about 90 days in summer. In the northern region, it is generally sown from May to late July each year and will mature in October.