"G" for me will be "Garden Daylily" this may not be a term with an official meaning, but it is an important term for many daylily growers. It refers to a daylily variety that is not chosen for hybridizing but is selected strictly for the beauty and performance of selected traits it has that makes it a great overall performing plant to be featured in the garden. I just made up a list of over twenty for my "Garden Daylily" want list.
Here are just a few on my new list: These were chosen mostly for rust resistance and clump forming.
Debbie Durio: