About
A vigorous herbaceous perennial forming extensive colonies to 1.5m in height, with long erect leaves striped yellowish-white. Flowers up to 10cm in width, yellow, the falls with brown veins in the centre.
About the genus
Iris may be rhizomatous or bulbous perennials, with narrow leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer
Growing conditions
SunlightFull sun
Soil typeClay, Loam, Sand
Soil pHAcid, Neutral
Soil moisturePoorly-drained
AspectSouth-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH7
Plant details
Plant typeBogs, Herbaceous Perennial
HabitClump forming
FoliageDeciduous
Height1-1.5 metres
Spread1-1.5 metres
Time to full height5-10 years
Suggested usesCottage and informal garden, Wildlife gardens, Coastal
ToxicityHarmful if eaten. Wear gloves and other protective equipment when handling. Pets: Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Care notes
CultivationGrow in moist to wet deep, humus-rich, acid soil in full sun. Has the potential to become a nuisance if not managed well so plant with care. See pond plants and bog gardens for further advice
PruningNo pruning required
PropagationPropagate by division from mid-summer to early autumn
Pest resistanceMay be susceptible to slugs, snails and thrips
Disease resistanceMay be susceptible to aphid-borne viruses, bacterial soft rot and grey moulds; see Iris diseases