Mountain Iris, Douglas iris

Iris douglasiana

Physical Characteristics

Iris douglasiana is an evergreen Perennial growing to 0.3 m (1ft) by 0.6 m (2ft in). See above for USDA hardiness. It is hardy to UK zone 7 and is not frost tender. It is in leaf all year, in flower from May to June, and the seeds ripen from August to September. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. The plant is self-fertile. Suitable for: light (sandy) and medium (loamy) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry moist or wet soil and can tolerate drought. The plant can tolerate maritime exposure.

Distribution

South-western N. America - California and Oregon.

Habitats

Woodland Garden Sunny Edge; Dappled Shade; Ground Cover; Bog Garden;

Edible Uses

None known

Medicinal Uses

None known

Known Hazards

Many plants in this genus are thought to be poisonous if ingested, so caution is advised[65]. The roots are especially likely to be toxic[238]. Plants can cause skin irritations and allergies in some people[238].