yes Rhizo_1! just what I was thinking about having them in a no ugly plant allowed area! I wouldnt care except those pots are right on the front deck where everyone see's them and I have other types of plants that could go there. Tiger's Eye I have not grown before so I dont know if the seeds will come true. I hope at least some will come back next year! I have also noticed that certain colors of pansies came back this year? Like last year I had all sorts of colors but now I have mostly the basic colors(maybe not as new varieties?) such as white, yellow, red with yellow, the big flowered varieties which are the same as last year, and also like 1 purple. I had those colors last year plus some ones with a little variant to them such as white with purple in the center, that didnt come this year. The pansies do make it through the winter, and sometimes keep flowering, but by summer if I dont cut them back then they are all scraggly. Which I dont care anyway since by summer I'm ready for more thriving summer flowers instead of trying to keep cold-weather flowers alive.

FGrom experience with other plants there will be some limited germination. the best results are when the pos starts to turn brown then collect & allow to dry.....

I would wait until the flower pods dry and split open, personally. Let Mother Nature do the work for you! Yes, yellow flag iris is very invasive. If you deadhead it faithfully, it shouldn't be a problem. The seeds float, and can float "downstream", which is why they're a problem. I just dug all my yellow flag up and put them on the compost pile.

No...they need to dry on the stem...they should slightly crack open first then you can harvest them.... They take quite a while to mature and dry on the plant.