1、 How to regenerate

When cutting onions, keep the onions and only cut off the green leaves on them. In addition, it should be maintained by hydroponics and given appropriate light, so that it can be regenerated continuously

2、 Regeneration method

1. Keep the roots: if you want the onion to regenerate, you must keep enough roots. The retention length is different according to the variety. Shallots generally remain about 5cm, and the green part is 3cm

2. Hydroponic growth: find a transparent glass container with a height higher than 5cm. Put the onion root down. If the container is large, you can put more onions. Then add clean water to it, and the water will submerge the scallion white. Don't add too much, or it will inhibit its growth

3. Daily maintenance: in order to promote the growth of onion leaves, we should provide a suitable environment. Put it on the sunny windowsill to provide sufficient light, and the light time is no less than 4 hours a day. Windows can also be opened for ventilation, which is conducive to cooling. The water should be changed once a day, and rainwater or well water should be selected

4. Harvest onion leaves: generally, after 1-2 weeks, the onion leaves can grow, and then they can be cut off. Onion leaf growth needs to consume the nutrients in the bulb. Generally, it will not grow again after harvesting three times. You can replace the onion root culture