Dany - Go to ATP homepage. Look to your left at all the options listed and click on "Plant Database". It will take you to a new page. Look to your right and you will see "visit our custom databases", click on "daylilies". Another new screen where you will look to the middle of your screen under "search and browse". Click on "search by characteristics (height, bloom color, etc)". Scroll down that page until you get to "color description". Type in "black" and see all the various daylilies that come up under that search.
Sounds like a very cool hybridizing goal! I hope you will share photos of some of your seedlings when they bloom!
