1、 Selection processing

Before hydroponic culture, choose a larger one, preferably one that is about to germinate, so that hydroponic culture can germinate soon. After selection, peel off a layer of dry skin of the epidermis and cut off a little from the root with a clean knife, so as to better absorb water

2、 Prepare container

It is recommended to choose a transparent container to facilitate the observation of growth. Note that the opening of the container should not be too large or too small. It's OK to jam the main onion. You can use a glass bottle or a water cup. After preparation, add water into it. The amount of water should not be too much. Just touch the bottom. If it is too full, it will affect breathing and take root

3、 Hydroponic culture

After everything is ready, you can put it on the mouth of the container. In the initial stage, you should change the water frequently, once a day, for a week, and soon the white roots will slowly appear

4、 Post management

After rooting, the frequency of changing water can be reduced, but it can be changed again every other day, which will last for about 10 days. At this time, small green buds will sprout at the top of it. Since then, the number of times should be reduced, and the water should be changed every three or four days. If you want it to grow faster, you can add an appropriate amount of rooting powder. In addition, pay attention to more ventilation