This study tested Solanum sessiliflourm for seed germination in order to know the general requirements for this species to carry out this process and to produce viable plants under different conditions from its customary distribution area. In tests, we determined viability percentages, germination percentages, germination times and response to the stimulus of light. Furthermore, we evaluated the effect of pre-sowing treatments with growth promoters GA3 (gibberellic acid), KNO3 (potassium nitrate) and PGPRs (growth promoting rhizobacteria) from the genera Bacillus sp and Pseudomonas sp, over S. sessiliflorum development at early growth stages. Additionally, we obtained a description of phenological stages for the species. The study was conducted at Nueva Granada Military University, Cajica, Colombia, with an average temperature of 18oC and 2558 m.a.s.l, with seeds from ripe fruits of S. sessiliflorum native from Caqueta, Colombia (average annual temperature of 27oC and 242 m.a.s.l). We found PGPRs provided no positive effect on this species development, while treatments with GA3 and KNO3 in presence and absence of light, had decreased time germination and increased germination percentages significantly, according with statistic test