Wild Horses and Egyptian Queen are not hardy in Boston. One Dan told me not to try so bought the other one. Died its first year.
Yabba Dabba Do is also another tender in Boston.
Be careful when you look at only someone else's zone and compare it with yours. From my experience, comparing zones is not the only factor in whether a daylily will survive.
Almost nothing here of Ra and Dan Hansen's plants survive, and I have lost over $500 of plants from Dan Trimmer. Bummer.
I only share to warn others - make sure that you have seen the plant and its habits grown in your area before spending your hard earned buckeroos!!!
;-)
