Petal growth and anthocyanin content in ray florets of Gerbera hybrida (Compositae) were determined during the six phases (from P1 to P6) of head development, and the development of pollen sacs and grains in disc florets were observed as well. The results showed that the anthocyanin in P3 phase started to increaseaccompanying the maturation of pollen grains in outer whorls of disc florets. The growth phase and pigmentation of ray florets were closely related to the stamen development of disc florets in head of the plant.