How can you tell which is which? I know I have both of them, but which is which?

Have you checked out the images and information in the database as far as scape height and flower size? To me, from the database photos Trahlyta looks a bit wider and the eye a bit more magenta, Starman's Quest a bit more narrow and the eye a bit more purple.

Trahlyta 30" 6.5"
Daylily (Hemerocallis 'Trahlyta')


Starman's Quest 40" 7" (Trahlyta is a parent)
Daylily (Hemerocallis 'Starman's Quest')

Starman's Quest is much taller than Trahlyta.

Thanks. That's helpful to see them both together. It looks like Starman's Quest has a larger light throat area. Height comparison is good, but not all of my plants are full grown.