Moat likely your irises just need to be dug and divided. Irises that have been neglected will become overcrowded and deplete their soil of essential nutrients. Since your irises didn't bloom last year, it's unlikely that they will bloom this year under the same growing conditions, either, so you may as well go ahead and do your digging and dividing as soon as your last frost date has passed. By dividing them early this season, you will give them as much time as possible to reestablish themselves and develop nice healthy root systems before next winter. That will increase your likelihood of bloom in '08.

You can find instructions for digging, dividing, and replanting, along with lots of other iris information, in the FAQs (link at top of forum page).

Happy irising,

Laurie