This Aster does bloom well the first year from seed, but if you grow it you'll want to deadhead before it sets seed. It will aggressively re-seed. If you wintersow; you can expect about %100 germination!! At maturity these Asters can be as tall as 4.5'. I pulled most of them out this fall (2009), but will try cutting them back by half early summer for a bushier growth habit.