Iris lutescens, the Crimean iris, is a rhizomatous flowering plant in the genus Iris. It is native to North East Spain, Southern France and Italy. It is found on rocky or sandy hillsides or in woodlands.
It grows up to 30cm (10inches) tall, with broad leaves (about 2.5 cm wide), producing yellow or violet flowers in spring (March–April). It prefers full sun, a slightly acid soil, and dry conditions during its dormant period in the summer. It is very hardy, down to -20C or less.[1]
This plant is cultivated as an ornamental plant in temperate regions. In the UK it has gained the Royal Horticultural Society's Award of Garden Merit.[2] [3]