Sorghum seeds of cultivars BR 007 A and BR 007 B, harvested daily since 21 days from flowering were analysed to moisture content, dry matter accumulation, germination and vigor. The experiment was carried out in 1990 at the ?National Maize and Sorghum Research Center? of EMBRAPA in Sete Lagoas, state of Minas Gerais. The results showed was that the best time to harvest seeds of high quality was around 33 days after flowering for both cultivars.