How to care for hydroponic onions

Onion hydroponic method

First, prepare a healthy and plump onion, peel off its dry outer skin, cut off a section of the root, prepare a transparent and clean container, fill it with appropriate amount of clean water, and then put the onion in it, so that its roots just touch the water.

How to grow hydroponic onions

When you first grow hydroponics onions, you need to change the water once a day to promote rooting and germination. After the roots grow out, you can change the water every three days or so. At this time, you can add a few drops of nutrient solution into the solution while changing the water, which can make the onions grow faster.

Be careful when changing the water so as not to damage the newly grown roots of the onion. When the onion leaves grow a little taller, you need to put it in a sunny place to bask in the sun. Appropriate light can promote growth, but too strong light still needs shade.

How to grow flowering onions in hydroponics

Generally, hydroponic onions need to be cultivated for more than 200 days before they can bloom. Their flowering period is usually between May in spring and July in summer, and their flowers are usually pink and white.

How to grow onions in water without yellowing leaves

If you want to prevent the onion leaves from turning yellow when growing them in water, you need to change the water every day in the first week of maintenance. In the early stages of maintenance, you can expose it to less light, but after it grows new leaves, you must provide it with sufficient sunlight, which will allow it to synthesize more nutrients and help it return to normal.

Precautions for caring for onions in hydroponics

1. When growing onions in hydroponics, pay attention to changing the water frequently, and cut off the dry and rotten roots when changing the water to keep the water clear and clean. If you do not change the water frequently, the water will be unclean and the roots will rot.

2. Onions like sunlight, so they must be given full sun when grown in hydroponics. This will prevent the leaves from growing too long and allow them to bloom early. Their flowering period is around May. They should be exposed to the sun frequently and placed in an environment with an indoor temperature of about 15 degrees. This way, they will grow very quickly.

3. After the hydroponic onion grows roots, you can reduce the frequency of changing the water. You can change the water every other day. If you want it to grow faster, you can add some rooting powder to the water to promote its rapid growth.