An experiment was conducted to study the effect of gibberellic acid on growth, flowering and cut flower yield in gerbera cv. Alcochete under protected condition using various gibberellic acid levels viz., GA3 at 50, 100 & 150 ppm. The experiment was conducted in completely randomized design with three replications. The results revealed that GA3 at 100 ppm performed better for maximum number of suckers per plant (3.39) whereas flowering parameters were also found to be significantly higher in flowering span (138.75 days), length of flower stalk (54.32 cm), flower stalk thickness (6.28 cm), number of ray florets per flower (189.67). In case of yield parameters, the same treatment was found better for fresh & dry weight of cut flower (40.99 & 13.49 g, respectively), number of cut flowers per plant (8.02), per square meter (80.20) and yield of flowers (16.04 lacs/ha). Whereas, GA3 at 150 ppm recorded the highest values for plant height (22.61 & 23.87 cm, respectively) and plant spread (33.73 and 41.04 cm2, respectively) at first flower appearance and pick flowering stage as well as highest number of leaves (17.13). The similar trend was also noted for flowering parameters and lowest number of days to the appearance of first flower bud & opening the first flower (50.98 & 57.57 days, respectively), diameter of flower (11.37 cm), longevity (15.29 days) and vase life (10.00 days) of flower found better under the treatment of GA3 at 150 ppm. While, GA3 at 50 ppm found for poorest response in all parameters.