Answer: There are about 160 species of chrysanthemum. The most commonly grown is C carinatum, the garden or summer chrysanthemum, which blooms in the summer and fall. The cushion mum is the Florist's Mum (Dendrathemum x grandifolium). It's a perennial plant that dies back in the winter and produces new sprouts in the spring. It's also the most varied of all chrysanthemum species in regard to color, growth habits and flower forms. The flower forms include 'spider', 'spoon', 'semi-double', 'pompom' and 'daisy'.
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