A double daylily has more than one petal whorl or a stamen whorl that contains petal-like stamens.
Double yellow self daylily.
Yellow - gold self double daylily
Yellow daylily with a green throat.
Daylily of a yellow chartreuse colour and a green throat
Daylily of a light yellow, double. Red eyezone. Yellow throat.
Greenish yellow self daylily. Its throat is green.
Double daylily of a red self colour
Pink daylily with lavender veins and a yellow throat.
Yellow daylily, self, with green throat.
Pink polychrome daylily with a yellow throat.
Daylily of a clear orange self colour