Iris seed pods?

Iris seed pods?

Hi everyone! I just discovered a weird pod type thing on my Iris.It is formong where the bloom once was...its tri lobed.Is this a seed pod? I have NEVER had this grow on any of my Iris.Im hoping its not aliens waiting to burst forward and zip my garden off into space..or where ever it is aliens come from...LOL.Anyone know what this thing is? If its a seed pod...how long do i wait until I harvest it,or should I just let it be? The seeds would fall into a place i dont want Iris to grow because its reserved for annuals only.Thanks guys and Happy Gardening!!!
Sunroot (Jerusalem artichoke)

Sunroot (Jerusalem artichoke)

I started a Coleus group on Flickr…

I started a Coleus group on Flickr…

what do you think?

what do you think?

Mystery flowering shrubbery…ID help requested…

Mystery flowering shrubbery…ID help requested…

Crocuses!

Crocuses!

more garden pictures

more garden pictures