If you’ve ever wondered what do spring onions look like, you’re in the right place. They are visually distinct and slender, making them easy to spot in the garden or store.
Spring onions are a versatile and tasty ingredient. Their mild flavor works in salads, stir-fries, and garnishes. Knowing how to identify them ensures you get the right allium for your recipe.
This guide will show you their key features. We’ll cover how to grow them and answer common questions.
What Do Spring Onions Look Like
Spring onions have a very clear appearance. Once you know what to look for, you won’t confuse them with similar plants.
The Overall Shape and Size
Spring onions are defined by their slender, upright growth. They look like a small, immature version of a regular bulb onion. The entire plant is usually between 12 to 20 inches tall from root tip to green top.
The form is neat and straight. They do not have the wide, floppy leaves of a leek or the thin, hollow tubes of chives.
Breaking Down the Parts: Bulbs, Stems, and Leaves
Let’s look at each part closely:
- The Bulb: This is the most telling part. A true spring onion has a small, rounded bulb at its base. It’s usually white, sometimes with a faint purple or red tinge. The bulb is clearly formed but not fully enlarged like a storage onion. It’s often no wider than a nickel or quarter.
- The Stem (The White Shank): Above the bulb is a crisp, white stem. This section is tender and juicy. It transitions smoothly from the bulb to the green leaves. This white part is a key edible section and is very flavorful.
- The Leaves (The Greens): The green leaves are hollow and tubular, but they are more firm and succulent than chives. They are dark green, straight, and taper to a point. Unlike the flat leaves of a leek or garlic, spring onion leaves are cylindrical.
How They Differ From Green Onions and Scallions
This is where many people get confused. The terms are often used interchangeably, but there is a subtle difference.
- Spring Onions: As described, they have a small, but obvious, rounded bulb. They are harvested later than green onions, so the bulb has had more time to develop.
- Green Onions / Scallions: These terms usually refer to onions harvested very young. They have an even slimmer profile with no bulb formation at all—just a straight, white shank that goes directly into green leaves. The line between them can be blurry, but the presence of a bulb is the best clue.
Color Variations You Might See
Most spring onions are a classic white and green. However, you can find varieties with a splash of color.
- Red or Purple Spring Onions: Some types have a beautiful purple or red blush on the lower part of the white stem and sometimes on the bulb. The greens remain a standard green.
- White Lisbon: A popular variety, it is a pure, clean white from root to where the green begins.
Growing Your Own Visually Distinct and Slender Spring Onions
Growing spring onions is rewarding and simple. They don’t need much space, making them perfect for pots or garden edges.
Choosing the Right Spot and Soil
Spring onions thrive in full sun but will tolerate light shade. The soil should be well-draining and fertile. If your soil is heavy clay, add some compost to loosen it.
They grow well in containers too. Use a good potting mix and ensure the pot has drainage holes.
Planting from Seeds or Sets
You have two main options for starting your crop:
- From Seed: Sow seeds directly in the ground about 1/4 inch deep. Thin the seedlings to about 2 inches apart once they are a few inches tall. This gives them room to develop their characteristic slender shape.
- From Sets (Small Bulbs): You can plant onion sets meant for green harvesting. Push them into soft soil so just the tip is showing, spacing them 2-3 inches apart. This method is often quicker.
Care and Maintenance Tips
Spring onions are low-maintenance. Follow these easy steps:
- Watering: Keep the soil consistently moist but not soggy. Water at the base of the plants to keep the leaves dry.
- Weeding: Keep the area weed-free. Weeds compete for nutrients and can cause misshapen growth.
- Feeding: A light feed with a balanced fertilizer halfway through the growing season can give them a boost, but it’s often not necessary in decent soil.
Knowing When to Harvest
Harvest time is flexible. You can start pulling them when the white stem is about the thickness of a pencil. For the classic look with a small bulb, let them grow a bit longer.
To harvest, simply grasp the plant near the base and pull gently. You can also use a trowel to loosen the soil if needed. The slender form means they usually come out easily.
Common Questions About Spring Onions
Can I use the entire spring onion?
Yes, you can! The entire plant is edible—from the white bulb to the very tips of the green leaves. Just trim off the hairy roots at the very bottom.
How do I store them to keep them fresh?
For short-term storage, place them in a plastic bag in your refrigerator’s crisper drawer. They should last about a week. For longer storage, you can chop and freeze them, though they will lose their crisp texture.
What’s the best way to clean spring onions?
Rinse them thoroughly under cool running water. Pay special attention to where the leaves meet the white stem, as soil can get trapped there. Shake off excess water or pat dry with a towel.
Are spring onions and chives the same thing?
No, they are different. Chives are much thinner, with solid, grass-like leaves and a more delicate flavor. Spring onions are larger, with a distinct white stem and a stronger taste.
Why are my homegrown spring onions so thin?
Overcrowding is the most common cause. If seedlings are too close together, they can’t develop properly. Ensure you thin them adequately. Lack of sun or poor soil can also lead to spindly growth.
Can I regrow spring onions from scraps?
You can! Place the white root ends (with about an inch of the stem) in a glass of water on a windowsill. Change the water every other day. New green shoots will appear, which you can snip and use. Note that the regrowth is often less robust than the original plant.
Now you know exactly what do spring onions look like. Their visually distinct and slender shape is easy to recognize once you know the key features. Whether your picking them from the market or your own garden, you’ll be able to identify them with confidence. Use them to add a fresh, mild onion flavor to your favorite dishes.