Most of my irises are tall bearded, or German iris.   

  I do have to confess to a fondness for the Siberian iris, as well, though. 

                    

These are some in the yard. They are overgrown at this point, and need to be separated or they will not bloom again for me. Siberian iris are a good plant to share, and seem to multiply even faster than bearded 
iris! 

I've got some blue and yellow Siberian iris in my yard, as well.

Siberian iris have smaller, more delicate blooms than the bearded iris, and are native to northern Asia and central and eastern Europe. They are very hardy and tough plants!