1、 Hydroponic culture

1. Prepare hydroponic containers: onions can be made into hydroponic bonsai after germination. It is convenient to operate and maintain and has a certain ornamental value. You can choose a container with a smaller mouth than the onion, which can hold the onion and soak the root in water

2. Choose onions: from the sprouted onions, find the ones with good shape and no damage

3. Dispose of onions: peel off the old skin on the outside of the onion and shake off the soil on the bottom root. Prepare clean water and wash the onion roots in clean water to expose the white roots

4. Hydroponics: fill the container with clean water and put the onion on the mouth of the bottle. The onion head cannot be soaked in water, but the root system can be soaked. In order to promote growth, aspirin tablets can be added to the water

2、 Soil culture

1. Prepare pot soil: onions can also be planted in the soil after germination. Select the flowerpot and fill it with loose, breathable and nutritious soil

2. Treatment and bud taking: peel off the outer skin of the onion, and the roots at the bottom shall not be damaged. Cut the onion in half and take out the complete buds inside

3. Planting: tidy up the soil, plant the sprouts of onion, cover the soil, do not plant too deep, and the top of onion should be exposed outside the soil surface

4. Later maintenance: after planting, water enough and keep it in a place with sufficient light