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A step by step guide on how to easily regrow your Scallions or other stem veggies in water. Scallions are also known as green onions, or Negi ネギ : Japanese type of green onion.
Regrowing vegetables is not only cost effective, but will help reduce your produce waste!
Washing & Cutting: 1 min
Growing: 3-7 days
Stem vegetables are plant stems that are used as vegetables (Celery, Asparagus, Broccolli). Scallions (also referred to as green onions) are vegetables derived from various species in the genus Allium and are also Stem vegetables.
Negi ネギ, ねぎ (also called Naga Negi, Shiro Negi, or Tokyo Negi) is the Japanese name for Welsh onion. Compared to a traditional green onion in the US, it is longer, thicker, and has a larger amount of white stem. We offer Ao Negi as part of our JAPANESE HERB SEEDS set. Technically, Negi is also a vegetable, but it is often treated as a garnish or add on so we included it with our herb set :)
There are many different types of scallions that come in various lengths and diameters pending the region they are grown. Essentially, they are all very similar in taste and can be used interchangeably in cooking and for regrowing purposes.
All types of stem vegetables can also be regrown in water using this method.
1. BUY / GROW YOUR STEM VEGETABLE
You can purchase from your local grocery store - Scallions usually comes in a bundle of 6. Or grow your own from Seed (Negi takes approximately 40-50 days to grow from seed to maturity)!
2. USE YOUR STEM VEGETABLE
Wash and cut / chop up the top part of the stem vegetable you are going to use for cooking (or freeze to use at a later date).
3. SAVE THE BOTTOM ROOTS
I prefer to cut the top half of the Scallion to ensure the remaining stem and roots are tall enough to stand easily when moved to water. You can use more of the stem vegetable just as long as you save the very bottom roots.
4. ADD FRESH WATER TO GLASS
Add fresh, clean water to a glass of your choice. We are using a short glass for the freshly cut roots.
NOTE: do not fill water too high as you do not want any of the stem sitting in water (will grow mold / get slimy) only fill high enough to cover the bottom roots
5. WATCH STEMS GROW IN WATER
After about 4-5 days you can go ahead and use the new grown stems on the Scallions. You can also leave them to grow longer for about 7-10 days max. Once they have reached their max growth or height, the stems will start to brown at the top stems.
6. CHANGE OUT WATER EVERY 1-3 DAYS
It is very important that you check and replace the water frequently with this method. Pending on your location and the environment, you may need to change the water more often in a warm + humid location.
If you forget to change the water, after a week or so for example - the water gets mirky, mold will grow/form, and it will smell! If this happens - you want to make sure you thoroughly clean your glass with soap before repeating this method.
Always ensure that the water level remains just above the roots and water is CLEAN.
You can re-grow the same roots at least 3-4 times. The re-grown stems will get thinner each time you cut back. Once the stem is too thin to be usable add to your compost!
If you prefer, you can also plant the roots in Soil (indoors by a sunny window or outdoors if it's warm enough). Just make sure to water the Scallions to keep the soil moist and ensure they are receiving enough sun.
STEM VEGETABLES that can be re-grown using this method:
Please leave any questions or comments below!
Step by step video guide is also available on our YouTube
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