Yellow Flag (Iris pseudacorus)
The only native aquatic iris, it can be vigorous in boggy soil. It is the origin of the famous Royal French emblem, Fleur-de-lys. As with all iris the tubers are harmful if eaten.
After foliage has died back in Autumn cut back to just above the water surface. If trimming left until spring take care not to damage emerging shoots.
Plant in full sun to partial shade between 0cm and 20cm deep.
- Flowering period: June & July
- Mature height: 80cm to 120cm
- Growth rate: fast