It's hard to say enough good things about this mum. It has been in bloom for a couple of weeks, and it will keep looking good until a hard frost (I just checked the forecast, and it looks like it will be in bloom at least until the middle of November). It is a warm pink color that compliments the fall colors, yet it really stands out as a fresh, vibrant flower. It is small and easy to ignore until it starts to get ready to bloom, when it begins to scramble over fading plants.
It makes an 18" cushion that is just smothered with flowers. Honestly, it has so many flowers that it looks better if you cut a few to bring inside for arrangements. It's disease and pest free and needs no special treatment. It also grows like crazy: plant four or five little 4" pots in May, and by October you will have more flowers than you know what to do with.
Plant it along with some aromatic asters, and your garden will finish out the season with panache.