How To Grow Green Onions From Cuttings. To regrow green onions in soil requires less than half an inch of the bottom of a green onion. But wait, it doesn’t end there. Below, I will be giving you a step-by-step guide on how to grow green onions from cuttings. The water grown seam to be lighter in color and need to change water every other day. Growing Green Onions From Seeds or Sets. I grow my Green onions in soil,but do some in water as well just find the soil ones to grow better. This will also help you save money and give you a little bit of fun. If it’s viable, it will put out new roots from its cut end. You can choose to grow scallions, green onions, or simply onion sets. Set that onion sprout into the cup with all of your green onion starts. Cover it with a 1-inch layer of soil. Green onions also known as spring onions and scallions are an easy crop to grow from seed. Bunch of green onions; A pair of scissors or a knife; Soil mix; Container; Water; Compost (Optional) Grow Green Onions – Step-by-Step Guide. Check the root end to see if new material is starting to grow. In soil just water and let them grow. Did you enjoy this little tutorial on how to grow green onions from cuttings… Whenever you buy a bunch of green onions, don’t throw away their root parts. It will continue to regrow, time after time. This is a great way to get young children into growing their own food as the results are really fast and it’s so simple. Get some green onions from the grocery, organic preferred. Chop the leaves for your use and save the tender green onion bulbs with at least an inch of green part left along. Before planting, choose the type of green onion you'd like to grow. Also Read: How to Grow Green Onions in Water. Starting your green onions from seed is an option; however, it is advised you plant seeds directly in the soil as opposed to starting the green onion seeds indoors. Plant seeds directly into the soil once temperatures have hit a steady 70 degrees and all threat of frost has passed. Just like your green onions, you’ll want to rinse your onion sprout once a day and provide it with fresh water. Planting Green Onions from Scraps. Regrowing your green onions back after using them is simple, convenient, and will make your gardening day a lot easier, so why not give it a try. Don’t forget to go over my guide on everything you need about green onions. Plant them! One week and I had fresh green onions to use in my recipes. How to Grow Green Onions What You Will Need To Grow Green Onions From Cuttings. Conclusion. After all, green onions are simply the green shoots that come up before an onion bulb starts to form. If you are into recycling then you need to learn how to grow green onions from cuttings. Using scissors, just snip off a leaf and leave the cutting where it is. Step 1.