About
Iris histrio, the varied-coloured iris, is a dwarf, bulbous perennial to 7 cm tall producing upright, narrow, square-sectioned leaves and pale-blue flowers marked with white, yellow and darker blue in late winter � one of the earliest bulbs to bloom. A charming and jewel-like iris for a sunny, well-drained rock garden or alpine house.
About the genus
Iris, the irises, are rhizomatous or bulbous perennials producing narrow, often sword-shaped leaves and distinctive flowers with three large, spreading or pendent fall petals alternating with three erect standard petals. They flower from late winter to early summer in every colour of the rainbow.
Growing conditions
SunlightFull sun
Soil typeChalk, Clay, Loam, Sand
Soil pHAlkaline, Neutral
Soil moistureMoist but well-drained, Well-drained
AspectWest-facing, South-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeBulbs
HabitTufted
FoliageDeciduous
HeightUp to 10 cm
Spread0-0.1 metre
Time to full height2-5 years
Suggested usesCottage and informal garden, City and courtyard gardens, Patio and container plants, Rock garden
Native toSyria, Lebanon, Turkey
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 neutral or slightly alkaline soil
PruningNo pruning required
PropagationPropagate by seed, sown in pots in a cold frame in autumn or spring. Lift and separate bulbs in 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