hemerocallis fulva. Also called Ditch Lily. It is a species daylily, and is very easy to grow. The roots spread and help prevent erosion, which is why it is used so much in ditches and on steep banks. Rather than growing by seed, just divide the roots on this one to make more.
You don't see it in stores because people share this one freely, and there are so many newer hybrids out there that have a longer bloom time and prettier faces.
I love seeing this one out in the country, untended by humans, just cheerfully blooming its head off, year after year!
