Thanks to everyone so far on the ideas. I will research them all. On our morning walk, Mom and I have noticed a completely neglected area adjacent to someone's yard that is in full shade under Sycamore trees and can't be getting any water (but a tiny bit of rain in winter - when we have some). It is almost covered in little Iris plants. They must be a PC species, they bloomed a few months ago dark blue-purple as I recall. Pretty cute and they look nice all year and are evergreen. I had a gorgeous apricot PC hybrid in Costa Mesa but had to leave it behind. Have never seen a PC Iris in a nursery here (barring the solitary apricot hybrid) so if anyone can offer sources I'd appreciate hearing about them.