Pretty Orange-Sulfur on Clematis heracleifolia

I know this plant is gawky and completely lacking in grace but I have always been fond of it. The flowers have a deeper color than this photograph communicates and a wonderful fragrance, a grapish/kudzu sort of scent. It's a tough plant, not often troubled by the trivial vicissitudes of pests or diseases and happy in just about any soil so long as it's sited neither in full sun nor full shade. Actually, with adequate water, full sun probably works. The fragrance though, that's the thing. This is the first Alfalfa butterfly I've seen this year, but then the butterflies were late appearing this season.