How to Store Spring Onions for a Long Time: 5 Easy Storage Methods

That bunch of spring onions doesn't have to end up in the trash just because you can't use it all this week.

Whether you toss them into a stir-fry, mix them into a salad, or scatter them over the top as a garnish in soup, spring onions add a fresh bite and a pop of color to all kinds of meals. It's always great to have them around, but with time, a fresh bunch can lose its crispness and begin to wilt or turn slimy before you get to use them all. Wasting food is never an option in my dictionary. Oh, how upsetting it feels to throw away most of the stems when you only needed a couple for a recipe.

Anyway, depending on how soon you plan to cook with them, you can keep those spring onions in water, refrigerate them, or preserve a larger amount by freezing or drying. I'm excited to share with you five easy ways to store and preserve your spring onions, including practical options for keeping them when you don't have a refrigerator.

Also Read: Fridge, Freezer & Pantry Food Lifespan: How Long Meat, Eggs & Leftovers Stay Safe

Prepping Your Spring Onions for Storage

These are the things you should do to prepare your spring onions for the storage methods if you're serious about keeping their quality for a long time.

Choose Fresh Ones at the Market:

Avoid bunches that are already soft, yellowing, or wilted. Look for firm, upright spring onions with bright green tops and clean, solid white bulbs.

Remove Damaged Parts:

When you get home, check the bunch and peel away any slimy, bruised, or damaged outer layers before storing. This helps keep spoiled parts from affecting the healthier stalks.

Also Read: How to Store Onions: Expert Tips to Prevent Sprouting and Spoilage

Do Spring Onions Need to Be Washed?

The better approach is to wait until you are ready to use them. Excess moisture around the leaves can encourage spoilage, so keep them dry for most storage methods. Water is intentionally used in the jar methods, but the green tops should stay above the water.

Keep the Roots Attached:

Unless a storage method calls for it, don't cut off the roots. The roots are particularly useful for water-based storage because they can take up moisture while the spring onions are kept in the jar.

1. Store Spring Onions in Water at Room Temperature

Spring onions aren't something you'd normally keep on the kitchen counter, and you're right to think that leaving them there on their own isn't the best idea. But the story changes when the roots are placed in water. That's the trick: keep the roots hydrated while leaving the green stems above the water. In fact, the spring onions may even continue to grow while they're stored this way.

Get Started With This Method:

Use a clean glass, jar, or small vase that is tall enough to hold the spring onions upright without them falling over. Place the spring onions in the container with the roots facing down. Add about 1–2 inches of clean, cool or room-temperature water, making sure only the roots are submerged. Keep the green stems and leaves above the water.

Set the container somewhere away from excessive heat and harsh direct sunlight, like on your kitchen counter or windowsill. Check the water every couple of days and replace it when it becomes cloudy or dirty. Add fresh water as needed to keep the roots covered.

How Long Do Spring Onions Last Outside the Fridge?

Stored this way, spring onions can remain usable for about a week, although the exact time depends on how fresh they were when stored and how warm your kitchen is. This makes the method best suited to spring onions you plan to use within a few days rather than long-term fresh storage.

2. Store Spring Onions in Water in the Refrigerator

You can keep spring onions crisp past the one-week mark (up to two weeks) by taking the exact same jar setup from Method 1 and moving it straight into the fridge. The cold air from the fridge changes things. On the counter, the onions are active and trying to grow. In the fridge, the cold temperatures put them into a deep chill, which helps keep them fresh for more than a week. It is a huge improvement over simply putting spring onions loose in the crisper drawer, where the dry air can quickly suck the moisture out of them, according to refrigeration and storage principles outlined by appliance manufacturers like Beko and food preservation guides.

Now, you need to make three quick adjustments for the fridge method since you already know the basic jar setup:

Keep the water shallow: The white bulbs should stay above the waterline in the glass, so double-check that only the roots are sitting in the water.

Cover the top loosely: Fridge air is very drying, so you need to trap just enough humidity around the spring onions by draping a plastic produce bag or a zip-top bag loosely over the top of the container you're using. Be sure not to seal it completely airtight, or you'll trap too much moisture and cause mold.

Place the jar in the refrigerator: Fix it somewhere stable. I'd rather make some space on my refrigerator shelf than place it in a crowded area where the jar could easily get knocked over. Don't forget to check the water after a couple of days to keep the roots clean and hydrated.

3. Store Spring Onions in a Damp Paper Towel

Use this method when you want to avoid keeping your spring onions upright in a jar of water. Wrapping them in a slightly damp paper towel retains just enough moisture around the stalks, making it easy to keep them neatly tucked away in the fridge. The paper towel should be damp, not soaking wet (using a spray bottle makes it easy to moisten it evenly). Wrap the spring onions loosely, ensuring the stalks are completely covered.

Next, place them inside a clean storage bag or container. Avoid sealing it too tightly; you also want to retain humidity without trapping excess moisture, which can cause slime and rot. Occasionally check the paper towel, and replace it with a fresh, damp towel if it gets soggy, or lightly moisten it again when it's dried out. The goal is to keep the towel just damp enough to prevent the spring onions from wilting.

4. Freeze Spring Onions for Long-Term Storage

When you have more spring onions than you can use within a couple of weeks, freezing is a long-term option to make them last for up to six months. This preservation method is best for cooked dishes like stir-fries or soups, rather than using them as a fresh, raw garnish since frozen spring onions lose their crunch over time.

So you start by washing the spring onions well and patting them thoroughly dry with a paper towel (excess water can cause ice buildup and freezer burn). Trim off the root ends and chop the onions just like you normally would for cooking. If you like using the mild white bases and the sharp green tops separately in your recipes, now is the right time to sort them into two different piles.

Spread your chopped pieces out in a single layer on a baking sheet or tray to keep them from freezing into one giant, solid block. Slide the tray into the freezer and leave it for about two hours. This initial freeze helps ensure the pieces stay separate. Once they're firm, scoop the frozen spring onions into an airtight freezer bag or container, then pop them right back into the freezer. When you're ready to cook with them, there's absolutely no need to thaw first. Just take out the amount you need and add them straight into your soups or scrambled eggs.

Also Read: How Chinese Chefs Cut Spring Onions for Stir Fry (And Why It Matters)

5. Dry or Dehydrate Spring Onions

Drying is another good option worth considering when you have a large amount of spring onions and don't want to crowd your fridge or freezer. By removing most of the moisture, you make it harder for spoilage-causing microorganisms to grow, allowing the spring onions to become a shelf-stable ingredient that can be kept at room temperature.

After washing and drying the spring onions, trim off the roots and any damaged or wilted parts, then slice the stalks into manageable pieces. You can keep the white and green parts together or separate them. On the dehydrator trays, arrange the sliced spring onions in a single layer, leaving enough space between the pieces for air to circulate. A dehydrator temperature of around 125°F (52°C) works well for green onions, but check the texture as they dry instead of relying only on a set drying time. The pieces should be completely dry and brittle rather than soft or bendable.

Let the dried spring onions cool completely before storing them. Packing them while they are still warm can allow condensation to form inside the container and add moisture back to the dried pieces. Transfer them into an airtight jar or container and keep them somewhere cool, dry, and dark. Properly dried spring onions can last for several months and are handy for adding onion flavor to your cooked meals. Keep in mind that drying changes their texture completely and they won't regain the crispness of fresh spring onions. So this method is better for preserving them as a cooking ingredient rather than using them as a fresh garnish.

Don't throw away the root ends after using your spring onions. They can be regrown, giving you another simple way to reduce kitchen waste. Learn how to regrow green onions from the roots.