Most iris need very well-drained soil. Japanese and Louisiana iris will grow in wet soil. If your soil is not ideal you can amend it with organic matter and build raised beds for better drainage.
Remove old blooms and stalks promptly after flowering to allow the plant to devote its energy to growth rather than seed. Removing old blooms and stalks also encourages repeat flowering on reblooming iris.
Can be transplanted during the summer and early fall. Container-grown iris can be planted in the spring.
Iris takes its name from the Greek word for a rainbow, referring to the wide variety of flower colors found among the many species. As well as being the scientific name, Iris is also very widely used as a common name and refers to all Iris species as well as some closely related genera. It is also the state flower of Tennessee. Who knew?!?