I've also been searching for a green daylily, but the only ones I've found that have a greenish cast usually have a large green throat that extends down the petals and they're usually either yellow or cream colored.
DESERT ICICLE
SPIDER MIRACLE is yellow, but sometimes in the shade it looks quite green
LIMONERO SQUEEZE - This yellow daylily absolutely glows in the shade for me. Once again not green, but it can get quite a greenish cast sometimes.
SKIN-WALKER - This one looks iridescent to me -- hints of pink, yellow and green
LITTLE SNOWFLAKE - A very late bloomer -- YEA!!!
UNFOLDING DREAMS - One of these blooms is definitely greener looking, especially from a distance
Maybe I'll start a thread to show big green throats, which I understand the hybridizers covet. I love those!
