In Chinese culture, the chrysanthemum is a symbol of autumn and the flower of the ninth moon. People even drank chrysanthemum wine on the ninth day of the ninth lunar month to prolong their lives during the Han dynasty.
They prefer full sunlight during the growing season. Not enough sunlight will result in a weaker plant that produces fewer flower heads. However, blooms will last longer if they are moved to a shadier spot after flower buds develop.
September to frost. Known as short-day plants, flowering is triggered by the shorter days in late summer and early fall. Flowering can also be forced in a light-controlled greenhouse.