When is the best time to sow onions?

If you want to grow high-quality and high-yield green onions , it is very important to master the correct sowing time, because sowing too early or too late will not be conducive to the normal germination, emergence and growth of green onions. So when is the best time to sow onions? Let’s learn more about it below.

When is the best time to sow onions?

The best time to sow green onions is generally in spring and autumn. Among them, spring sowing is usually from March to April, while autumn sowing is from September to October. But the specific location depends on the geographical location and climatic conditions.

What are the techniques for sowing green onions?

1. Land preparation and fertilization

Scallions prefer fertile, well-drained soil. Before planting, till the soil and add organic fertilizers such as compost or well-rotted animal manure to increase the fertility and organic matter content of the soil.

2. Seed treatment

Before sowing, soak the seeds in 0.5% potassium permanganate solution for 30 minutes to kill the pathogens attached to the surface of the seeds. Then mix in an equal amount of wet fine sand, put them in a germination container, cover them with wet gauze, and place them in a warm environment of 28-30℃ for germination.

3. Sowing method

When sowing, dig furrows according to a certain row spacing (about 20-30 cm), spread the seeds evenly into the furrows, cover the soil with a thickness of about 1-2 cm, gently compact it and water it to keep it moist.

4. Transplanting points

When the seedlings grow to 15-20 cm high, they can be transplanted into the field. Dig a hole about 10 cm deep at each planting site and place the seedling in the hole. The planting depth should be such that the white part of the scallion is slightly exposed above the soil surface, and then water it to establish the roots.

5. Field management

(1) Watering: Keep the soil slightly moist to avoid water accumulation, and pay attention to drainage, especially during the rainy season.

(2) Weeding: Weed regularly to prevent weeds from competing with onions for nutrients.

(3) Top dressing: Apply nitrogen, phosphorus and potassium compound fertilizer according to the growth of the plant during the growth period to promote the thickening of the green onion.

(4) Pest and disease control: Regularly check the growth of green onions and detect and treat pests and diseases in a timely manner.

6. Harvest at the right time

Green onions can usually be harvested 60-80 days after sowing. When harvesting, sunny weather should be chosen to reduce the water loss of the onions. After harvesting, the soil should be shaken off and dried in the field for half a day, and then sorted for storage and transportation.

In general, green onions are usually suitable for sowing in spring and autumn, but whether it is spring sowing or autumn sowing, it is important to follow the basic laws of plant growth and give proper care and protection, so as to effectively improve the planting yield and quality of green onions.