Hi Connie. Both of your hibiscus appear to be Hibiscus moscheutos-aka swamp mallow, rose mallow, hardy hibiscus. I stole this link from the Perennial forum, contributed by GrannyLois. It is http://www.pclink.com/harley/hibiscus.htm I also have added some info here on Dave's on the plant data base. I don't know exactly which variety you have. On the pink, I would guess either Disco Belle or Southern Belle, depending on the heighth. Is your white double?
I really can't tell, it seems to be. Thanks for all the info, I have been reading! I have never been a big fan of hibiscus but these are really grabbing my attention, I love the huge blooms that just keep on and on.