The morphodifferentiation of dahlia flower bud is divided into five stages : vegetative cone reproductive cone involucre differentiation half flourish differentiation and tubular flower differentiation .

大丽花花芽分化形态变化过程，可分为营养锥阶段、生殖锥阶段、总苞分化阶段、舌状花分化阶段、 管状花分化阶段5个时期。