In most English-speaking places, “green onions” and “scallions” are the same thing. Your confusion is completely understandable.
The short answer
- Green onion = common name
- Scallion = another common name for the same vegetable
Both usually refer to young onions with:
- long green hollow leaves
- a small white base
- little or no bulb
Why the confusion happens
The terminology varies by region and by individual cooks.
Some people use these terms differently:
| Term | Typical meaning |
|---|---|
| Green onion | Young onion with green tops |
| Scallion | Same as green onion |
| Spring onion | Slightly more mature onion, often with a larger bulb |
However, many grocery stores and recipes use green onion and scallion interchangeably.
What your mother-in-law may have meant
It’s possible she was:
- Using a regional distinction where spring onions and scallions are considered different.
- Looking for a specific size or maturity of onion.
- Simply mistaken about the terminology.
If you bought the long green stalks with white ends that are labeled either “green onions” or “scallions” in most supermarkets, you almost certainly bought the correct item.
A practical test
If what you bought looked like this:
- thin white stem
- long green tops
- little or no round bulb
then it would generally be called both green onions and scallions by most cooks.
Bottom line
You weren’t wrong. In common culinary usage, green onions and scallions are usually the same vegetable, just different names. The only related onion that is often considered distinct is the more mature Spring onion, which develops a noticeable bulb at the base.
