Jo Ann those are really pretty! I have one that sort of looks like the Ink on Ice think it's called White Wedding tried to google it but the girl that sent it to me may have named it she sells irises.
Kelly what about a white veronica I'll have to look it up a little later for you think they are about 24" tall very pretty white/white. Normally I don't care for whites but I'm taken with this one. I'll save you some seeds if you want, I had a hard time trying to collect seeds last year so I just gathered some seed heads and WS them and got some. I put you down for some Monarda.
White Inoxia Datura is very pretty but spreads out quite a bit but I keep trimming mine off to make it more open inside to let more light thru for other plants under it and around it.
