If you have a jar, water and a window sill, you can easily regrow green onions (a.k.a. scallions) to save money and energy.
Since regrowing food from scraps is like buying one and getting one free, it’s a money-saver or a reason to buy organic, which at my grocery store costs about twice as much as the conventionally grown product. It’s also an effortless way to give a second life to a product that initially took a lot of energy to grow, harvest and ship. That is particularly appealing to me because I’ve never seen locally grown green onions at a farmer’s market or gotten them in my CSA. Regrowing my green onions gives me a chance to make a local product from the leftovers that would normally end up in the trash or compost.
To regrow green onions:
It took about 10 days for my green onions to regrow. I have also regrown the plants a second time but the roots got quite long and unwieldy. At that point, it may have been better to put them in dirt.
Sticking wilted green onions in a jar of water s also a great way to revive them when they are a little past their prime.