Lars Grimm
Chumono
Appreciate the link. Sadly they don't have the cultivar that Valavanis mentioned is the best for bonsai.
True, although it is unclear to me if there are other cultivars which may make good specimens. Bill writes, "The Nippon Daisy, Chrysanthemum nipponicum, is a woody perennial which is winter hardy in the Upstate New York area and develops great trunks, old bark and bright pure white, daisy-like flowers in autumn." The woody perennial seems to be the key component here.