Perennial with blade-like leaves growing in a fan shape. They can reach to 75cm tall. White flower with purple streaks in spring. Rhizome has a violet scent.

Propagate by dividing clumps. The rhizome should be slightly above soil level. If starting from seed, shake seed in some dry, sharp sand, or nick carefully with a file. Sow at 18-22C for 2-4 weeks, move to ?4-+4C for 4-6 weeks, then to 5-12C for germination. Germination is irregular and can take anything from 30-545 days. Grows in most well-drained soils in sun. Requires little care.

Collect roots in the second or third year of growth. Peel and chop while soft, then dry for at least 2 years before the scent is at maximum strength. Grind to a powder. Ribbed seedpod contains 3 rows of seed.

Warning: Orris root and leaves are poisonous, and can cause allergic reactions in some people.

I live not far from Cleveland, and can assure you that orris does very well in this area. The fan-shaped clump will just get bigger and bigger and is easily divided. I've got a whole row of them at the front of my house, originating from a tiny pot like the one you bought, and they are totally neglected, and get water only when it rains - they are in full sun. They are doing beautifully, thank you. The flower is very short-lived, but very pretty, if you're quick enough to catch it.