I compost extras.
One time a relative of a friend came and dug up a ton of cast off seedlings. He took them to Tennessee for erosion control on a hillside. He took hundreds. Wonder what it looks like now, 5 years later?
I made the exception for Keith to take them because
1) he didn't know anything, really, about daylilies
so 2) they are not likely to be used for breeding or be linked to me by name.
I feel this way - if a plant is not good enough for me to keep - it is not good enough for me to give away and have someone say "wow, that daylily has terrible foliage, no branching and 4 buds. Who did you say was the hybridizer? -- OH - well, if those are the kind of plants she produces, I definitely won't be buying any of her introductions..."
I have given thousands and thousands of dollars worth of named cultivars away - I don't have a problem with giving daylilies to people. It is a lot of fun to give them away -- but my seedlings stay here.