Iris tectorum | roof iris

Roof iris (Iris tectorum) is a beautiful, evergreen, spring-blooming Iris from the crested iris group. It received the common name 'roof iris' as it was once widely planted on thatched roofs in Japan and China. Today, it is most commonly grown as a rapidly spreading perennial in the garden. It is happiest when planted on consistently moist but well-drained soil in full sun or part shade. Zones: 4 to 9 Family: Iridaceae Type: Herbaceous perennial Height: 12 to 18 in. Spread: 12 to 18 in. Exposure: full sun to part shade Soil: average, fertile, moist, well-drained Bloom Time: May Native Range: Central and southwestern China, Myanmar