About
A vigorous, rhizomatous, clump-forming compact perennial with grassy green upright foliage to 80cm high. Flowers are composed of white drooping standards with yellow-green signals wit typically three large flowers on a stem to 65cm high, flowering early to midsummer.
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, Partial shade
Soil typeClay, Loam
Soil pHAcid, Neutral
Soil moistureMoist but well-drained, Poorly-drained
AspectSouth-facing, East-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeHerbaceous Perennial, Bogs
HabitBushy
FoliageDeciduous
Height0.5-1 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCity and courtyard gardens, Coastal, Cottage and informal garden
ToxicityAll parts may cause discomfort if ingested. Wear gloves and wash hands after handling
Care notes
CultivationGrow in moist to wet, deep, humus-rich, neutral to acid soil in sun or part shade; it thrives at the margins of ponds or streams
PruningRemove any dying foliage in autumn, old flower stems can be cut down after flowering
PropagationPropagate by dividing iris rhizomes from midsummer 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