FODMAP food guide
Is green onion low FODMAP?
FODMAP score
25
Low FODMAP
Yes — Green Onion is low FODMAP in normal servings and is generally well tolerated by people with IBS.
FODMAPs present
Low-FODMAP serving
green tops, 3/4 cup chopped (75 g)
Becomes high FODMAP at
bulb beyond 1/3 cup (32 g); green tops beyond 1 cup (97 g)
Same plant, same numbers as spring onion: tops low to 75 g (moderate fructose from 97 g); the re-tested bulb carries a 32 g low serve, with the second programme at 20 g.
Seen a different rating somewhere else?+
Usually it's a portion difference, not a disagreement. This page scores green onion at a serving of green tops, 3/4 cup chopped (75 g); at bulb beyond 1/3 cup (32 g); green tops beyond 1 cup (97 g) it belongs in the high band. A source quoting the larger serve will call it high, and one quoting the smaller will call it low — the same food, measured at two different amounts.
Based on published FODMAP research and reviewed reference data. Informational only — not medical advice. Tolerance is individual; verify with a dietitian during the elimination phase.
How much is OK?
This food's verdict depends on the serving. The bands below show where the load builds, group by group.
Excess Fructose
Green tops only — the everyday allium workaround. Fructose builds past a full cup.
Fructans
The white bulb was re-tested from avoid-entirely down to a genuine 32 g low serve; the second programme holds a stricter 20 g. A reintroduction-phase serve, not an elimination one.
Bands reflect published FODMAP research for typical preparations — individual tolerance varies, especially mid-reintroduction.