Sometime ago I downloaded a spreadsheet with flowering data for perennials
from a lady on a US forum. I have only just looked closer at it.

Her longest flowering perennials were three Daylilies "barbara mitchell",
"ed murray" and "pandoras box" all at 244 days (thats 34 weeks!). That is an
extra-ordinarily long time. I do not know where she lived, or her climate,
which is obviously key.

Has anyone had a Daylily in the UK flower for anything approaching that.

--
Peter
N Yorks - clay - slightly acid - mostly full sun