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How to Grow Onions in Water

Onions (Allium cepa) are root crops and therefore have to grow in soil. Some people would like to see what happens if you grow them in water, though. If you're one of them, you can try this fun activity if you have any spare onions. It won’t make the onion grow any bigger, but it will be fun to watch it grow and flower. The kids will enjoy seeing onions grow, too!

Steps

  1. Fill your glass or jar with water.Make sure you fill it just about a few centimeters below the rim. Make sure that the water isn’t too high (a centimeter from the rim) or too low (more than four centimeters from the rim).
  2. Take your onion and poke a toothpick shallowly into the side of it.Make sure the toothpick is slightly lower down from the middle. If it's that way, it will go in about one or two centimeters from the base.
    • Repeat the process around the circumference of the onion. Do this until you have three or four toothpicks poking a few centimeters out from the onion. Then place the onion right-side-up on the top of the glass of water.
      • The onion should rest ever so slightly under the water; only about a centimeter of the base of the onion should be underwater. The toothpicks should also support the onion so it doesn’t fall any lower.
  3. Place the glass somewhere where the onion gets full, filtered sunlight.Then wait for the onion to grow. The leaves and roots will grow out of the bulb within a week.
    • Regularly change the water before it gets murky and smelly. This will prevent rotting.
    • The flower stem will come up and open after it produces leaves for a few weeks. From that point on, the onion will naturally stop growing and its leaves will become yellow and dry. You may wish to discard the onion, too, as it has become dormant. You could try planting it at a later time unless it rots. Perhaps it will grow if you replant it!

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  • It's very highly recommended to use a clear glass of water. If you do, you'll be able to watch the roots grow. You should also ensure that the glass or jar has a larger diameter than the onion.
  • Try not to use onions that might have mold on them. The mold will spread across the onion in the presence of constant moisture.
  • Don’t worry if onions don’t grow after a week. Occasionally some onions simply won’t sprout. Perhaps they were treated with anti-sprout chemicals or they don't grow naturally.
  • Always remember to change the water regularly. This will keep the onion from rotting in the water.





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Date: 06.12.2018, 19:23 / Views: 71454


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