Onion pot planting methods and precautions

When to plant onion pots

There are many varieties of onions, and the planting time of different varieties is different, but the general time is the same, mostly concentrated around early September, which is probably the White Dew solar term. The temperature and climate at this time are more conducive to growth and are also easier to manage.

How to plant onion pots

1. Choose onions that have sprouted. At this time, you will find that the skin of the onion is very thin, and the originally hard onion has become a little shriveled. You need to remove the thin outer layer of skin, but do not damage the roots at the bottom.

2. Cut the sprouted onions, but be sure not to cut through the small bud in the middle, otherwise the potted onions will fail. After cutting, you will find that the bud in the middle is tender yellow. You can remove the excess onion. If you are worried that the small bud in the middle lacks nutrition, you can also keep the excess.

3. Plant the cut onion with the roots facing down into the soil. The bulb can be slightly exposed. Water it thoroughly once. Place it in a semi-shaded environment for the first three days. Then move the flowerpot to an environment with more sunlight. You will then see the onion gradually grow many leaves.

Onion pot planting steps

1. Prepare onions that have already sprouted, or those that have not sprouted, as long as they are fresh, you can plant them.

2. Prepare loose, fertile, and well-drained nutrient soil. You can mix peat soil and perlite and fill 2/3 of the flower pot. Then water it thoroughly once to soak the soil.

3. Bury the onion with the dried wound facing up and keep it in a cool and ventilated place. After 7 days, green sprouts will grow out of the soil.

4. After the onion seedlings grow out, they need to be provided with sufficient light. If the soil in the pot is slightly dry, you can spray water in time to keep the soil moist. The seedlings will grow tall quickly. After 30 days, dig the onion seedlings out of the soil and you can harvest big onions.

Onion potted plant maintenance matters

1. Temperature: Onions prefer a warm environment. The germination temperature of seeds and bulbs is between 3 and 5 degrees Celsius, and it starts to accelerate at 12 degrees Celsius. The suitable temperature for seedling growth is between 12 and 20 degrees Celsius. Robust seedlings can withstand temperatures as low as minus 6 to 7 degrees Celsius, but are not resistant to high temperatures. If the temperature is too high, their growth will decline and they will go dormant.

2. Light: Onions are long-day crops and prefer an environment with plenty of sunlight, especially during the bulb expansion period and the bolting and flowering period, which requires more than 14 hours of light. Under hot and short-day conditions, only leaves will grow and onions cannot be formed.

3. Water: Onions like a humid environment and need to be provided with sufficient water during the germination period, the peak growth period of seedlings and the bulb expansion period. However, water should be reduced during the seedling stage and before wintering to prevent the seedlings from growing too tall and suffering from frost damage.