<p><strong>Background:</strong> The Moringa genus is made up of thirteen species and is characterized by its rapid growth. Studies relating to gender in association with plant growth promoting bacteria (PGPB) are limited. <strong>Objective:</strong> To evaluate the growth, development, and quality of <em>Moringa oleifera</em> Lam seedlings inoculated with plant growth promoting bacteria under greenhouse conditions. <strong>Methodology:</strong> The following were defined as treatments: <em>Bacillus niacini</em>; <em>B. cereus</em>, <em>Moraxela osloensis</em>, <em>Azospirillum brasilense</em> (positive control) and an absolute control, which were arranged in a completely randomized design with four replications. <strong>Results:</strong> Bacterial inoculated promoted an increase in the number of leaves per plant, standing out <em>A. brasilense</em> (10.8), <em>M. osloensis</em> (11.45) and <em>B. cereus</em> (11.05) (P≤0.001). The plants inoculated with <em>B. cereus</em> produced 0.80 t DM ha^-1 of leaves and in whole plant 12.92 t DM ha^-1, a value higher than that promoted by the rest of the inoculated (P≤0.01), all stimulated leaf development with respect to the absolute control (P≤0.001), and only <em>A. brasilense</em> and <em>B. niacini</em> favored the length and thickness (P≤0.01) of the roots. <strong>Implications:</strong> The application of the bacterial inoculated referred to in concentrations of 10⁷ CFU mL^-1 is recommended to promote the production of aerial biomass of Moringa plants under greenhouse conditions. <strong>Conclusion:</strong> Bacterial inoculated promoted morphological modifications in plants that favored growth, leaf quantity and the proportion of aerial biomass with respect to the root, but to a small extent in the accumulation of DM. According to the Dickson index, the inoculated plants were of quality.</p>