Brittany,
Welcome to NGA!
I agree, you may have an issue with ploidy. You asked about getting plants with a known ploidy and you have come to the right place! Nearly every daylily in the database here on NGA has a known ploidy. There are SO MANY daylily sellers that you have PLENTY of options for buying a known-ploidy daylily. (You could also go to a local nursery, buy a daylily that has the a name, and research whether it's diploid or tetraploid right here on our site!) I recommend purchasing from a daylily seller, though, you'll have MUCH better selection, service, and probably better prices, too.
You could start here:
The thread "Daylily Classifieds.. ****UPDATED**** 4/13/2024" in
Daylilies forum
