Please add Daylilies by the Pond.
dayliliesbythepond.com
They have Siberian, Japanese and Bearded irises. Although it is not listed at the moment, I do believe it is the only commercial sales for the elusive Japanese iris Shiro Nihonkai in the US. After searching and waiting for five years I was so pleased to find a source in the United States. I did share it with as many as I could so we could get it well established in the US.