How cheap-replanting green onions, replant root ends …

How to Grow Green Onions

How to Plant Green Onions from Seed:

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. Plant seeds about ½ an inch deep and cover with loose soil. You can get away with planting seeds closer together, with about an inch apart being sufficient.

How to Plant Green Onions from Seedlings:

Green onions can also be planted from “sets” which is the name of the seedlings ready to go right into the ground. These are ideal for people with shorter growing seasons or who lack the patience for planting from seed. Just like your seeds, do not plant until after the last frost has passed and temperatures are at a constant 70 degrees or higher. Allow for the same type of 1-inch spacing. You will find that green onions don’t spread out much and will do fine if planted closely together.

When planting your onion sets, plant each set about one each deep and cover with loose soil. Mixing some compost or fertilizer into the soil will help the green onion bulb thrive and is suggested as well.

Green Onion Planting Tips:

Green Onion Planting Tips:

As mentioned, you should plant your green onions about one inch apart. Be sure you are using nutrient-rich soil that is loose and never compacted. Green onions will do just fine if they aren’t in full sun. If you can choose a space that gets at least 4-5 hours of sun a day they will survive. A little mulch around the base of the plant can help keep the edible onion bulb cool and prevent drying out.

You can keep your green onions hydrated by supplying 2 inches of water per week, more when the weather is extremely dry.

How to Grow Green Onions in Containers:

If you are limited on space, planting green onions in a container is an excellent idea. Use a large flower pot at least 12 inches wide and 12 inches deep per 3 to 4 plants. As you can see, you can grow quite a few green onions even in a single pot. Be sure your pot is well draining, so that the bulb never sits in water which can lead to rot.

In extreme heat, you may need to water your container more frequently. Check your soil regularly and keep moist.

Green Onion Plant Care Tips:

There are a few things you need to keep in mind when growing green onions. The care of the onion bulb should be your priority. You want to keep it cool and moist. A great way to do this is to check the soil regularly, offer water when it dries out, and use plenty of mulch around the base of the plant. All of these tips can help keep moisture in and keep the soil cool.

One of the nice things about green onions is they don’t tend to attract many pests. Should you find any pests using your green onions at their all you can eat buffet, you do have options. Remove these pests by hand and then use a chemical-free pest solution like a mixture of dish soap and water generously sprayed on the plant.

Your green onion plants will thrive if fed liquid food. Feed them a dose (according to package directions) when you plant and offer the food again in 4 weeks.

When to Harvest Green Onions:

This is the best part of the green onion growing process! When your green onion foliage is about 6-8 inches tall, it typically means your bulbs are ready to be harvested. Green onions will always be best when harvested while they are still tender. Waiting too long can lead them to dry out and become tough.

How to Harvest Green Onions

You can harvest your green onions a few different ways. You can dig them up from the bulb and use the entire plant, or you can trim the foliage to use alone (like scallions) leaving the bulb in place and allowing the plant to continue to grow.

Did you know that you can regrow green onions from the remainder of the bulb? When cutting your onion bulb leave about ½ an inch above the root. You can then replant this onion segment and start the growing process all over again.

Once harvested you can use your green onions all sorts of ways. They are excellent to use in salad dressings, marinades, and soups. Add them to baked potatoes or use them to season meat and fish. Should you grow more than you can consume, freezing the scallions is always an option.

Try these tips on how to grow green onions and see how they can help you produce a successful crop that you can be proud of!


Are green onions the same as scallions?

This will be yours- but without the store.
This will be yours- but without the store.

Yes, they’re the same thing.

You may find them called either or and there’s no need to get confused over it. Regrowing scallions is the same as regrowing green onions.

Green onions may also be called spring onions. But they’re all referring to the same plant- allium. This genus also includes other plants like like regular onion, leeks, shallots, and chives.

Similar to green onions, you can also regrow bok choy, fennel, and garlic.

Did you know you can regrow these plants as well? Isn’t that cool?

So, can you replant green onions or not?

You sure can! I’m honestly surprised at friends who eat green onions regularly but never consider growing it themselves. It’s so easy even a caveman can do it.

Once you set up the vessel you plan to grow it in, it takes care of itself. All it needs is a few water top-offs and that’s about it.

If you grow it in your garden, it makes an excellent addition to your garden edibles. It’s also super cheap to propagate and maintain because it basically requires minimal TLC.

Once you start, you’ll be dumbfounded and ask yourself why you didn’t do this sooner.


Scallions can be harvested quickly during the growing season. They’re usually ready every 2-3 weeks. You can cut as needed.

Each shoot can be harvested up to 5 times before it needs to be replanted. You’ll notice this as the plant starts to get very thin when you harvest it.

It topples over and flops as soon as you harvest it, rather than having that sturdy, firm feel to it. It doesn’t affect the flavor much but may result in a duller taste that’s blunt.

Green Onions and Nutrition

You gain much more if you consume both the bulb and the green leaves. Green onions are also known as scallions and the are very rich in vitamin A. A single cup offers 20% of your RDA if you include both tops and bulbs or nearly 80% if you consume only the top. That is a big of a contradiction but only because the bottoms or bulbs offer you some nutrition that you don’t find in the tops. This is why it is important to consume both the tops and the bulbs.

1 TBS of chopped green onion tops and bulbs offers

1 TBS of chopped green onion tops and bulbs offers you as much as 20 percent of your daily vitamin A intake and 31 percent of the RDA for vitamin C. They are also a good source of iron at 8 percent and of calcium at 7 percent of the RDA for a 2,000-calorie diet. There are 32 calories in one TBS of green onions with tops and bulbs but only one calorie in the same amount of green tops. So, the big benefit is the added calories and 7 grams of carbs.

How to regrow green onions in water

To regrow green onions from scraps, all you need is the white bulbous portion with the roots intact, a cup of water, and a window near a light source. I like to leave about 1-2 inches of the white bulb to make sure it’s able to stand on its own in the cup. I typically see green onions start growing more green leaves within the first 24 hours. 

Here’s some tips on regrowing green onions from cuttings:

Step 1: Cut the onions

When cutting your onions, leave about 1-2 inches o

When cutting your onions, leave about 1-2 inches of white bulbs with the roots INTACT

Step 2: Rinse the white stalks

Clean the bulbs and roots gently under running wat

Clean the bulbs and roots gently under running water to remove excess dirt–this keeps the water clean

Step 3: Place in a cup and add water

Use a small cup to start and add just enough water

Use a small cup to start and add just enough water so that there’s still a bulb at the top

Step 4: Place near a bright window

Leave the cup near a window with a light source to

Leave the cup near a window with a light source to promote growth

Step 5: Refresh the water every 2-3 days

Pour out the old water and add new tap water every 2-3 days or when the water discolors. Eventually, after a few weeks, you have the option to replant the green onions in the soil to give them more nutrients. (see below for instructions)

What Benefits That Shallots and Green Onions Can Bring?

The spices in the allium family can bring various health advantages to your body. The following information is some key benefits of consuming green onions and shallots that you should know.

Health Benefits Of Shallot

  • Support Heart and Blood Conditions: The high amount of antioxidants in shallot allow them to improve your heart health and blood circulation. The thiosulfinates found in shallots also prevent the risks of blood clots.
  • Prevent Allergy: By consuming shallot, you can reduce the possibility of seasonal allergies that affect your noses and eyes.
  • Treat Normal Cold or Flu: The antimicrobial compounds in shallot can help you avoid cold, flu, or fever.

Health Benefits Of Green Onions

  • Prevent Cancer: The allicin compound in green onions can reduce cancer growth, particularly stomach cancer.
  • Avoid Inflammation: Green onions can kill bacteria or viruses thanks to their phytonutrients.
  • Reduce Obesity: The antioxidant and bioactive properties of green onions can decrease the risk of obesity.
  • Good for the Digestive System: The high levels of vitamin C and fiber will boost the function of your digestion.

You cannot know how amazing green onions are until you learn their health benefits. The video below should be able to help you:

Watch this video: Health Benefits of Eating Scallions

FAQ Troubleshooting

How to harvest your green onions?

Harvest your green onions after they have at least a couple inches of new green growth on them. Cut them back to the base with clean scissors or a knife.Ideally you’ll wait until several shoots have come out of each root cutting, then you’ll cut one off and leave the others. Try not to harvest more than 50% of each individual green onion at a time to avoid shocking the plant.

How many times can you regrow green onions?

With proper care you should be able to regrow green onions from several weeks, to indefinitely!When you regrow onions in water, they will continue producing for several weeks. After a while, you’ll notice they slow down and eventually will stop regrowing. That’s because they have run out of nutrients!If you want to keep them growing, plant the green onions in a pot in your windowsill or outdoors (weather permitting). With proper care in soil, green onions will produce nearly indefinitely!If you don’t have soil to grow them in, just use them up and start the process over again with a fresh bunch from the store!

What do I do if the roots turn slimy?

If the roots of the green onions growing in water become slimy, it’s a sign you need to change the water more frequently.To fix it, pour out all the water from the glass, rinse the roots under fresh water, then place them back in a clean glass with fresh water or plant in soil.

Why did the green onions stop growing?

This might happen when you try to regrow green onions in water. Plants need water, air, sunlight and nutrients to grow. When you regrow green onions in water, they have water, air, sunlight, and a small reserve of nutrients in the cutting. Those nutrients will eventually run out and the green onions will stop growing.When this happens, you have 2 options:1. Plant the cuttings in soil2. Use up the green onions and restart the process with a fresh batch of green onions from the store.Technically you could also grow green onions hydroponically which involves adding the nutrients directly to the water, but that is a lot more technical and not accessible to most people.

Can you grow green onions without a sunny window or outdoor space? Without any sunlight at all, the green onions may grow a couple inches, but won’t grow much. If you have even just a bit of sunlight, regrowing green onions in water should work, although the growth will likely be much slower. You really have nothing to lose in trying it, since the ends would have been scraps anyways! It will also work well using a grow light for indoor plants. You can get LED ones that look like normal light bulbs, fit in a regular light fixtures, and use very little electricity like these ones. You could also keep the green onions standing in water in the fridge to make sure they last as long as possible and you don’t waste any. They should keep several weeks this way, as opposed to several days if not kept in water. Read a comparison of 5 different ways to store green onions.

I hope this tutorial helped you understand how to easily grow green onions from scraps, even without a garden!

If you loved this tutorial and want to print it or save it for later, get the Regrowing Veggies From Scraps Ebook for only $6 with coupon code READEREbook includes how to regrow green onions, lettuce, celery, & microgreens!

I’d love to hear from you. Did you have success growing green onions indoors? Do you prefer to grow them in water or in soil? Do you regrow any other food from scraps?? Let me know in the comments!


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