Green onions, also known as scallions, are excellent candidates for propagation from cuttings. Green onions are one of the easiest herbs to propagate from cuttings, and you can have a constant supply of fresh green onions by following this method.
Here's how you can propagate green onions:
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Choose the right green onion: Select a healthy green onion with roots intact. You can do this by buying fresh green onions from a grocery store or using the roots from green onions you've already used in cooking.
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Cut the tops for cooking: You can use the green tops of the onion for cooking. Just cut them about an inch or two above the white part.
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Plant the white part: Take the remaining white part of the green onion, which includes the roots, and plant it in a pot or directly in the garden. Make a hole in the soil, insert the white part with the roots down, and cover it with soil. Water it well.
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Maintain the plant: Keep the soil consistently moist, and your green onion will continue to grow and produce more green tops. You can harvest the green tops as needed for cooking.