Seashore iris (Iris spuria) is a hardy rhizomatous perennial with slender blue-green leaves and purple or lilac flowers in late spring and summer. It grows well in full sun or part shade in moist but well-drained, humus-rich soil and dislikes root disturbance.
Family
Iridaceae (Iris family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Water generously in spring; it prefers drier conditions in hot summers.
Soil
Tolerant of most garden soils; prefers well-drained, humus-rich, neutral soil.
Temperature
Hardy to USDA Zone 3 to 9.
How easy
Easy
Safety
Toxic: Rhizome and leaves are poisonous; ingestion can cause stomach pain and vomiting, and handling may cause skin irritation or allergy.. Toxic to cats and dogs (ASPCA).
Native range
NC. & C. Europe to Iran
Climate
temperate
About
Iris spuria, or blue flag, is a species of the genus Iris, part of the subgenus Limniris and the series Spuriae. It is a rhizomatous perennial plant, from Europe, Asia and Africa. It has purple or lilac flowers, and slender, elongated leaves. It is widely cultivated as an ornamental plant in temperate regions and hybridized for use in the garden. It has several subspecies; Iris spuria subsp. carthaliniae (Achv. & Mirzoeva) B.Mathew, Iris spuria subsp. demetrii (Achv. & Mirzoeva) B.Mathew, Iris spuria subsp. maritima (Dykes) P.Fourn. and Iris spuria subsp. musulmanica (Fomin) Takht. It used to have 3 other subspecies, which have now been re-classified as separate species; Iris spuria subsp. halophila (now Iris halophila), Iris spuria ssp. sogdiana (now Iris halophile subsp. sogdiana) and Iris spuria subsp. notha (now Iris notha).
How to grow it
It is generally thought to be easy to grow.
It is hardy to between USDA Zone 3 and Zone 9. It is also hardy to European Zone H2.
Safety
Like many other irises, most parts of the plant are poisonous (rhizome and leaves), and can cause stomach pains and vomiting if mistakenly ingested. Handling the plant may cause skin irritation or an allergic reaction.
Where it grows
Iris spuria is native to a very wide area, from Africa, to temperate and tropical Asia and Europe.
Text excerpted from the Wikipedia article Iris spuria 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.