"Little Grapette" (Williamson, 1970) Award-winning 'Little Grapette' is amply adorned with deep purple flowers with green hearts. prolific, Producing 2-3/4" blooms early in the season, this miniature daylily is 12"- to 22"-tall Semi-evergreen, diploid. I has bloomed in late June in my garden for a very short bloom season, but perhaps it will do better when it is established.