I use spring onions all the time when I cook. They have a very mild flavor that is perfect as a garnish and also makes a lovely sauce for most proteins. So I like to have them on hand. Growing onions is a pretty easy from a gardening standpoint, but did you know that you can also regrow spring onions in water?
Several years ago, I was watching The Next Food Network Star show and one of their quick fire challenges was to give a quick kitchen tip. One of the contestants talked about regrowing spring onions in water so that you would never have to buy them again.
I had my doubts, but tried the project and found that it worked like a charm! Not only that, it’s an easy project, fun for the kids to help out with and gives brings the outdoors inside as well.
Don’t have a garden where you can grow spring onions outside? That doesn’t matter. You can actually regrow store bought spring onions, as long as they have a some of the roots left on each plant.
Here is how to regrow spring onions in water.
Sort out your onions, making sure that all of the onions have a least a few roots growing from the bottom. Take out any that don’t and save them for cooking later. The longer the roots are, the better for fast growth.Trim the tops of the onions and place them in a glass of clear water with the water just above the point where the onions start to turn green. I find that the water stays fresh longer if I don’t have it all the way up where the green tips are. Any kind of see through jar will work. Mason jars are decorative, small clear vases work, or even a plain clear water glass. You will want to be able to see what is happening as the spring onions regrow.
As you need spring onions for cooking, just cut off the green part of the onions above the water line and leave the base in the onion jar. Change the water when it starts to get a bit funky. Every other day works for me. Keep the container near a sunny window if you can, so that the onions get some light.In a few days, the onions will start regrowing from the cut area. You can re-cut again and again! Free onions forever! (as long as you remember to change the water.) My first shoots appeared in about 3 days.
My daughter knows how much I love to regrow spring onions in water. She gave me a small onion jar where I can keep my cut onions until they grow again. This way, I have one jar of them growing new onions and the other with water keeping my onions fresh until I use them for cooking.
It only takes a few days before you see the new growth and in about a week, you’ll have a bunch of new spring onion shoots.
These are the roots of the spring onions at just about 10 days. They are so much longer than when I put them in the jar of water!
The beauty of this project is that you can do it over and over again. Regrowing spring onions means that you’ll never have to buy them again! Just be sure that you change the water every few days. If you don’t, the whole bottom area will get decayed and mushy. It is THAT easy to regrow spring onions!
Why won’t my spring onions regrow?
If you have trouble getting the spring onions to regrow, it could be one of these causes:
- The water is dirty. Be sure to change it every few days
- You have cut them too close to the root. Leave quite a bit of the white part for best results
- Not enough water. If the onions water is too low, the onions will dry out and won’t grow.
- Too much water. Don’t have the water level too high. Cover just the bottom area and let the new growth occur above the water.
- Not enough sunlight. Move closer to a sunny window. Plants need some light to grow.
For more garden hacks, see my Garden Art and Recycling Board on Pinterest.
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