Chrysanthemums, or Chrysanthemum morifolium, are perennial subshrubs of the genus Chrysanthemum in the family Asteraceae.
The plant is a perennial IF it has had adequate time to grow suckers, which is where next year's growth begins. Plants purchased during the fall season have been forced to grow and typically do not have time to establish suckers.
For more information about mums and other October garden tips, listen to the October
Master Gardener Mondays ZOOM recording and hear Berni Kurz discuss fall gardening tips. Logon to Buddy Messages for the link, enjoy the talk and prepare your gardens for the winter.
Also, click on this link for chrysanthemum history and additional mum tips.