One of the best ways to get more flowers in your chrysanthemum is to deadhead the spent blooms. This will encourage the plant to produce more flowers. You can also fertilize your chrysanthemum with a high-phosphorus fertilizer to promote flowering. Be sure to follow the directions on the fertilizer label carefully. Over-fertilizing can damage the plant. Finally, make sure your chrysanthemum is getting enough light. Flowering plants need at least six hours of direct sunlight per day to thrive. If your plant isn’t getting enough light, it may not produce as many flowers.