Hemlady,
1979 sounds about right for the date(I just mean I think it is pretty old), but unless these blooms get much larger as the season progresses, that is not it. My first bloom is about four inches I would guess without measuring.
Tomorrow I will measure the bloom and the scape height.
Very interesting, I found a daylily farm not far from here that sales 'Arc of Gold', that certainly increases the odds of it being in this area.
