This study was conducted with the objective of determing the effects of growth regulators on flowering and productivity of soybean plant under greenhouse conditions. Applications of (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm, succinic acid-2,2-dimethylhydrazide (SADH) 4,000 ppm, gibberellic acid (GA) 100 ppm, indolylacetic acid (IAA) 100 ppm, and water (check treatment) were made on plants showing 4 leaves. SADH delayed the beginning of flowering. GA reduced time for maximum flowering. SADH reduced the flowering time in relation to the check treatment. Soybean plants treated with SADH produced a lower number of pods. 'Davis' soybean sprayed with GA presented an increase in dry weight of stems.