The days to emergence of seedlings and 50 % flowering were minimum in 16 October and maximum values in 21 November sowing. Among genotypes, RH-725 took minimum days to emergence of seedlings and 50 % flowering while RH-1019 took maximum days. The plant height, CGR and RGR were maximum in 23 September and minimum in 21 November sowing at 120 days after sowing (DAS). The genotype RH-0116 had highest values and RH-1019 had lowest values of all the growth parameters. | Phenological and growth responses of Indian mustard Brassica juncea L. genotypes to different sowing dates