Do you ever find an onion that has been at the bottom of the pile and discover it has started sprouting? I used to get so upset that I had wasted food. Then one day I started wondering whether I could use that sprout to grow a new onion.
I found a whole lot of information saying that it wasn’t possible. Then I stumbled across this post, and it gave me new hope. I decided to give it a try next year, and I was so excited that it worked!
The process to regrow a sprouted onion is surprisingly simple.
1. Cut carefully into the onion lengthwise to expose the center sprout.
2. Remove the outer layers of the onion, until you just have the center sprout remaining. As long as the outer layers of the onion are still firm, you can eat them. If they’re soft, discard them. If there are multiple sprouts like this one, separate them.
3. Place the onion stem into a cup or bowl of water, and leave it there until roots start to sprout. These are the beginnings of roots. I like to leave them in the water until they’re a bit longer.
Also, notice that this one doesn’t have really long green sprouts. You can also cut the center out of onions that haven’t started fully sprouting and regrow them!
4. Once you have roots developed, transplant the onion into the ground or a container. I didn’t separate these ones, and they didn’t grow right. Take my lesson and separate all of the sprouts before planting.
5. Let them grow through the season. You can usually tell that the onion is done growing when you see the bulb emerge from the soil, or the green sprout starts to wilt and brown. If you leave them too long, they’ll soften and rot. If you pull them at the right time, you’ll have beautiful onions that you grew practically for free!