Lookalike guide
Montbretia vs Yellow flag iris
Both have sword-shaped leaves in dense clumps by water and lanes.
Yellow flag iris (Iris pseudacorus): Native wetland plant.
| Feature | Montbretia | Yellow flag iris |
|---|---|---|
| Flowers | Arching sprays of small orange flowers | Large single yellow iris flowers |
| Leaves | Narrow, pleated | Broad, flat, with a raised midrib |
Quick test
Orange sprays in late summer mean montbretia.