40 - 50 cm
fertile, humus rich, wet
acid - neutral
Iris is a large genus of close to 300 species in the iris family, Iridaceae. The word iris is from Greek and means rainbow, which refers to the colourful flowers of species in the genus. Nearly all species are native to temperate regions in the northern hemisphere where they grow in varied habitats, from dry alpine conditions, to meadows and marshes.
Division in spring.
Seed - sown in September - November.
Soaking the seed in hot water can speed up germination. Seed covered and stored outside until March. Needs at least 2-3 months cold stratification. Brought to 15-18°C (60 - 65°F) for germination.
Flowering can be sparse. Needs moist - wet, fertile soil.