You can regrow green onions in a cup by using the leftover white base with roots in water.
Here's a step-by-step guide:
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Snip off the green stalks: When using green onions, cut off the green tops, leaving about 2-3 inches of the white base intact. This white part should have the roots attached.
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Place the roots in a glass of water: Put the white base, root-end down, in a cup or glass of water. Ensure the roots are submerged, but most of the white part remains above the waterline to prevent rotting.
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Keep the glass by a window: Place the cup in a location that receives plenty of sunlight, such as a windowsill. Sunlight is essential for growth.
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Replace the water regularly: Change the water every 1-2 days to keep it fresh and prevent bacterial growth. This will also provide the green onions with fresh nutrients.
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Watch them grow: You should see new green shoots emerging from the top within a few days. You can harvest these as needed.
Tips for Success:
- Use clean water: Filtered or dechlorinated water can be beneficial.
- Avoid overcrowding: Use a larger container if you are regrowing many green onion bases at once.
- Consider planting in soil: After a few weeks of regrowing in water, you can transplant the green onion base into a pot with soil for continued growth. This can lead to thicker and more robust growth.
