I've been growing iris from seed for a long time (15+ years) I've never introduced a thing after thousands of seeds I maintain only 28 seedlings 3 are from the late Sam Norris , 2 belong to bill Tyson and the other 2o are from this season in the spring all not showing great vigor will leave I personally don't think most cull hard enough. Take the 2016 bloom introductions currently coming out how many original ones do you see I have looked at at least a hundred most are repeats which for me is a repeated pattern way overdone on the other hand there are several new and improved iris out there. If you cull iris basesd on foliage its easier to wipe the board and start with something that has nice foliage because iris foliage looks like she_t most of the year. Truly the best advice I can give you if you want awesome iris in your small yard is grow others because it literally takes thousands to find any thing worth introduction and that can take years. Be diligent because a lot of those awesome beauties grow poorly and are introduced simply because the bloom is so different
