Crestwood Lucy, a midseason dormant tetraploid. The Crestwood series of daylilies was created in the 1960s by Orville Fay and Robert Griesbach, who soaked diploid daylily seeds in a colchicine solution before planting. In some of the resulting plants the chromosome count was doubled (44 instead of 22), thereby creating many of the world's first tetraploid daylilies. Today the Crestwood line is seldom grown and is mostly of historical interest.Photo by: Nick Chase.