Dennis, I can't tell you how hardy the Sarracenia will be for you in Ohio, but here in USDA zone 7 Montgomery County, Maryland, USA, well north of the native ranges of all species of Sarracenia except S. purpurea, all the ones I've tried outside have grown well for years. I've grown many hybrids and all of the species except S. oreophila. For height to compliment the Iris tridentata, try S. flava, S. alata and S.leucophylla. And there are plenty of tall hybrids. Here in Maryland, most of these plants decline quickly if not grown in strong sun. And watch out for competing plants, grasses especially. It's not necessary to keep them soaking wet all the time - I let mine dry out during the summer and this does not seem to hurt them. Long warm late summers and falls are probably needed by S. alata and S. leucophylla in order for them to produce their best (i.e. tallest, biggest) trumpets. These two are noticeably less good in cool seasons. Historically, Sarracenia flava probably grew within a couple of hundred miles south of here, so it's probably pretty tough. The oldest of the current plantings here have been in place for perhaps fifteen years, but are much run down now. When they were at their height, there were years when over one hundred bloomed each spring – that was quite a sight! I’ve never grown Iris tridentata, but years ago I was given some seed supposed to be of this species. The forms I’ve seen have broader falls than the ones shown on the SIGNA site – in fact, they look a bit like very elegant small Japanese irises. Jim McKenney jimmckenney@jimmckenney.com Montgomery County, Maryland, USA, 39.03871º North, 77.09829º West, USDA zone 7 My Virtual Maryland Garden http://www.jimmckenney.com/ BLOG! http://mcwort.blogspot.com/ Webmaster Potomac Valley Chapter, NARGS Editor PVC Bulletin http://www.pvcnargs.org/ Webmaster Potomac Lily Society http://www.potomaclilysociety.org/