Try the Day lily forum . there should be books available on inter-library loan from the library . they can be written at different levels at the 3rd grade level for example . what traits is she breeding for ? Do you know it take 3 years from seed to get a bloom ? If she needs this for a school project I suggest radishes they can grow to seed in 4 months ( early types ).

Some daylily breeders report on the fertility of their plants. Some bear seeds but little pollen, others have good pollen but set few seeds. There are also differences in chromosome number, which can be important to breeders.

Stamile of Floyd Cove Nursery has some almost blue varieties that are well worth looking at, even though the newer types are scary expensive.

Karl

Here is a link that might be useful: Floyd Cove Nursery