A field experiment was conducted to study the effect of early sowing during monsoon season on flowering, duration of reproductive phase and pod yields in alternate (runner) and sequential (bunch) types of groundnut. Early sowing resulted in early flowering, more number of flowers per plant, low percentage of flower production during first five weeks from the commencement of flowering, prolonged reproductive phase and higher pod yields. Among genotypes, alternate types showed lower percentage of flower production within five WAF (weeks after flowering), however, days to flowering and pod yields were high. Days taken to flowering and percentage of flowers produced within five WAF related negatively and significantly with pod yield in both alternate and sequential types. In situ germination had no effect on pod yield in alternate types. Genotypes such as ICG 8440 and ICG 2461 which have prolonged reproductive phase with no in situ germination are better suited for achieving higher pod yields when crop was sown early.