Well this is it's first year with more than one bloom stalk, and bud. It has not tried to re-bloom here, but our summers are so hot I think that inhibits the re-bloom. Dave, have you tried moving yours? It might help, since you are doing everything else right for it. If mine hadn't improved this year I was going to go over to Duke Gardens and ask how they get theirs to bloom and re-bloom. (light bulb goes off) Need to ask how they get re-bloom!