So, it is really just a judgment call, then? I personally can't think of an insignificant flower - I find great pleasure in the really tiny ones that surprise you, often with strong fragrance or just their peek-a-boo nature. Can both showy and insignificant be checked for a single entry? I often run across entries which are tagged as insigificant, which I disagree with (sometimes I've noted that in the comment section, but not always). Maybe insignificant is the wrong term? Or, perhaps this is a redundant category since we already have the bloom size as one of the properties? Or, I'm just the only one stumped by this...and I can certainly get over it!
