About
An upright perennial, to around 80cm high, with narrow, sword-shaped grey-green leaves. Flowers have dainty, narrow petals, with a yellow signal and often have darker purple veining on the falls. Branching stems bear up to ten flowers in early summer, in shades from pale to deep purple or occasionally white.
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 typeLoam, Sand
Soil pHNeutral, Acid
Soil moistureWell-drained
AspectSouth-facing
ExposureSheltered
UK hardinessH6
Plant details
Plant typeHerbaceous Perennial
HabitClump forming
FoliageDeciduous
Height0.5-1 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCity and courtyard gardens, Cottage and informal garden
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 well-drained, fertile, neutral to slightly acid soil in full sun
PruningRemove spent flower stems and any dying foliage in autumn
PropagationPropagate by division, see dividing iris for more detailed advice
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