During processing of sweet sorghum by industry only the stalks have been used to produce alcohol, while the panicles are discharged or sometimes used for livestock feed. In order to investigate a possibility of using grain as seed, three cultivars of saccharine sorghum BR 501, BR 503 and BR 505 were tested in the years of 1985 and 1986 in Sete Lagoas, MG. Seven harvesting dates were tested, spaced seven days one from the next beginning 15 days after blooming. Physiological maturity of the seeds and the stalks occurred when seed moisture content was 30 to 33% wet basis, correspondet to 35 ato 44 days after blooming. In this stage, the greater sugar extraction, germination index and vigor were observed. Only the cultivar BR 501 in the year of 1985, did not reach a minimum of 8% sugar extraction considered the economic limit for industrial uses. The panicles of the three cultivars of sweet sorghum tested, could be used for seed when moisture content is in the range of 30% to 33%.