How many days does it take for onion seeds to sprout and emerge from the soil?

In the planting process of gardening enthusiasts and farmers, green onions are often one of the most popular vegetables. Knowing the time when green onions germinate is crucial to successfully growing green onions. So how many days does it take for onion seeds to germinate and emerge from the soil? Let’s take a look below.

1. How many days does it take for onion seeds to sprout and emerge from the soil?

Under suitable conditions, onion seeds generally germinate and emerge from the soil in about 7-14 days. The factors that affect the germination of onion seeds are mainly the following:

1. Temperature

The temperature suitable for onion seeds to germinate is generally between 13℃ - 20℃. If the temperature is too low, germination will become slow or even stagnate; if the temperature is too high, it may affect the vitality of the seeds and lead to a lower germination rate.

2. Humidity

Maintaining a certain level of soil moisture is conducive to the germination of onion seeds. After sowing, the soil should be kept moist, but not waterlogged to prevent the seeds from rotting due to lack of oxygen. Generally speaking, soil moisture is more suitable at around 60% - 70%.

3. Soil conditions

Loose, fertile, well-drained soil helps onion seeds germinate. If the soil is too compacted, it will hinder the respiration of seeds and the growth of roots; if the soil is too poor or the pH value is not suitable, it will also affect the germination and growth of seeds.

4. Seed quality

High-quality seeds have a high germination rate and germinate quickly. When purchasing onion seeds, you should choose regular channels to ensure the quality of the seeds. At the same time, the seeds can be treated, such as soaking and germination, to increase the germination rate and speed.

2. How to grow onions?

1. Seed treatment: Soak the onion seeds in warm water for 6-8 hours, rinse them with clean water after soaking, then wrap the seeds with wet gauze, place them in a warm place, keep them moist, and promote germination.

2. Sowing: Sprinkle an appropriate amount of culture soil in the seedling tray or seedling box, spread the seeds evenly on the soil surface, and then compact it lightly. Finally, cover with a thin layer of soil and keep it moist.

3. Light and temperature: Onion seeds need sufficient light and suitable temperature to promote germination and growth. When growing seedlings indoors, artificial light can be used to provide light while maintaining the temperature between 15-25 degrees Celsius.

4. Transplantation time: When the onion seedlings grow to 10-15 cm in height, they can be transplanted. Before transplanting, the nutrients accumulated during the seedling stage should be transferred to the roots, and the water supply can be reduced appropriately.

5. Planting distance: The row spacing of ordinary onions is generally 15-20 cm, and the plant spacing is 10-15 cm. The row spacing of green onions is generally 25-30 cm, and the plant spacing is 15-20 cm.

6. Watering: Onions require a lot of water, but they should not be overwatered to avoid root rot. Water evenly to avoid waterlogging.

7. Fertilization: Start fertilizing in the second week after transplanting, and apply every 10-15 days. You can choose organic fertilizer or compound fertilizer to provide nutrients.

8. Weed control: Remove weeds around the onions in time to keep the onion field clean and tidy to prevent weeds from competing for nutrients and water.

9. Pest and disease control: Common pests and diseases of onions include onion scab and onion red aphid. You can choose appropriate pesticides for prevention and control, and pay attention to the use and dosage of pesticides to avoid harm to the environment and human body.

10. Onions can generally be harvested 60-90 days after sowing, depending on the variety and growing conditions. When the leaves of onions turn yellow and fall over, they can be harvested.

That’s it