I would mass plant this one if i had more space. I have grown it for 5 years now and had to divide it 2 years ago. Bud count is not spectacular but ample (did not count this year) but the blooms are and this is my one and only large yellow daylily.
Have had very little to no rust problem and mine has grown to easily 30 inches maybe more. I think i have a pic from this year.
I think you can see the bud count is not too bad at all and judging by the fence it stands 32 inches plus some more. Full sun almost all day except last hour or so. If you love golden yellow flowers you have to grow this one. Great for beginners like me. Lol.