I have had American Revolution for several years and I find it does best in full sun (as do most daylilies). I had it in a bed in part-shade for a few years and though it still bloomed for me (and I loved the color) I decided to move it to a more sunny bed. It has rewarded me. Not only does it have many blooms but it increases quite quickly. It is one of my favorites, and the best performing dark dlily I have.
