Background history:
'Buttered Popcorn' is a semi-evergreen tetraploid introduced in 1971 by Benzinger. No further information is known other than there are 56 registered cultivars listed under this hybridizer's name.
Buttered Popcorn is a mid-season to late EMO bloomer. It has earned the following AHS awards: Award of Merit: 2004, Honorable Mention: 2001, and PC: 1993. It has a rust resistance rating of 1.3. It is listed as pod and pollen fertile with 7 registered children:
http://garden.org/plants/paren...
This plant can be found in the NGA Plant Database at:
Daylily (Hemerocallis 'Buttered Popcorn') .
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Daylily (Hemerocallis 'Buttered Popcorn')