As a comment about Daylily (Hemerocallis 'Florence Denny')
Daylily 'Florence Denny' is a monster of a plant. The 8 1/2 inch flower, with deeply ruffled edge, never hangs or droops with the weight of the flower. Florence always stands tall in my garden. This year she has outdone herself with 21 buds. This flower apparently is easy to hybridize. Fertile both ways. Because the flower is a neutral cream color, and if you are looking to promote a larger bloom size, this may be the plant to try. I will set pollen on it this summer. Always beautiful, and I believe underappreciated, 'Florence Denny' is an outstanding daylily.