Iris humilis is a small rhizomatous perennial dwarf iris with yellow, vanilla-scented flowers, native from Europe across Russia to northern China. It grows best in well-drained, sandy soil in full sun or part shade, making it suited to rock gardens.
Family
Iridaceae (Iris family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Water average amounts during the growing season and keep the soil from becoming waterlogged.
Soil
Well-drained, sandy soil; tolerates mildly acidic to mildly alkaline, including lime.
Temperature
Hardy to about USDA Zone 1 to Zone 6; cold tolerant enough to survive in Siberia.
How easy
Moderate
Safety
Toxic: Rhizome and leaves are poisonous; ingestion can cause stomach pain and vomiting, and handling may irritate the skin.
Native range
E. European Russia to N. China
Climate
temperate
About
Iris humilis is a plant species in the genus Iris. It is also in the subgenus of Iris and in the Psammiris section. It is a rhizomatous perennial, with a wide distribution range from Europe to Russia to China, via Mongolia and Kazakhstan. It has sword-shaped leaves, a short stem and yellow flowers with an orange beard. It is cultivated as an ornamental plant in temperate regions.
It once had Iris arenaria as a synonym or as a subspecies. It is a yellow dwarf iris only from central Europe. In some sources it is still listed as a subspecies of Iris humilis.
How to grow it
It is hardy to between USDA Zone 1 and Zone 6. It survives in Siberia, so is cold resistant.
It prefers to grow in well-drained soils, it prefers soils containing sand.
Safety
Like many other irises, most parts of the plant are poisonous (rhizome and leaves), if mistakenly ingested can cause stomach pains and vomiting. Also handling the plant may cause a skin irritation or an allergic reaction.
Where it grows
It is native to a wide distribution area, including temperate regions of Asia and Europe.
Text excerpted from the Wikipedia article Iris humilis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.