Hi DJ,
to ATP!
I glad Cindi has offered advice for growing the Neomarica (Walking Iris) since she's had experience with this particular plant. I don't grow Walking Iris so I'm not real familiar with it's growing conditions other than that it isn't cold hardy below zone 8 so would probably be considered an annual if grown in the ground in your area.
There are a few Neomarica's listed in the database:
http://garden.org/plants/searc... and probably all require the same type of growing conditions!