Double sunflower overwintering method: reduce watering in winter and keep the soil dry; Can be stored in a bright, cool place, keep enough sunshine; Double sunflower must control the temperature in winter. The northern area can be moved indoors, keeping the temperature above 5℃, and the warm area in the south can be put outdoors for winter. Double-headed sunflowers need to be pruned properly to cut off residual flowers, dead leaves and dead leaves.

Double-season flowers have no fixed flowering period. As long as it is sunny, it will keep driving. In the south of China, flowers can bloom all year round. In North China, the normal flowering period is also spring and late autumn, and winter is rare. Only by moving back to a room with heating will it bloom when there is light. It will take more than half a year to see the flowers.