Bioinputs in the cultivation and post-harvest longevity of Ornithogalum saundersiae.Floriculture; Flower stems; Ornamental plants.Floriculture represents a segment of significant socioeconomic relevance in Brazil, characterized by its dynamism and potential for biotechnological expansion. From this perspective, the cultivation of *Ornithogalum saundersiae* Baker, an ornamental species appreciated for its aesthetic characteristics, emerges as an opportunity for diversification and strengthening of the floriculture market. Despite its potential, research and cultivation of this species are still limited in the country. In contrast, the use of bio-inputs has stood out in contemporary agriculture as a sustainable strategy to mitigate the environmental impacts of synthetic inputs, promoting soil suppression and increasing plant vigor. Therefore, this study aims to evaluate the effects of using bio-inputs in the cultivation of *Ornithogalum saundersiae* compared to conventional management. The experimental design will be completely randomized (CRD), composed of four treatments and five replications. The data will be subjected to analysis of variance and, when significant by the F-test, will be subjected to Tukey's mean comparison test at a 5% probability level. The variables to be measured include emergence, number of leaves, flower buds, inflorescence characteristics, and post-harvest longevity. Additionally, the photosynthesis rate will be evaluated using the CI-340 device at key developmental stages. It is expected that the use of bio-inputs will promote technological and environmental advancements, providing improvements in flower productivity and quality, as well as offering a sustainable alternative for the floriculture sector.