The study took place in Las Frambuesas Farm, located in the province of Heredia, Costa Rica, in an experiment evaluating the growth and yield of strawberry plants ( Fragaria x ananassa cv. Oso Grande) grown in three organic treatments. The substrates used were compost, vermicompost, and soil from a secondary forest. In order to evaluate treatments, measurements of descriptors were taken, including plant height, number of leaflets, width and length of leaflets, and °Brix. Yields were evaluated on a per treatment basis that measured fresh fruit weight. The treatments of compost and vermicompost reached fresh fruit yields of up to 53.6 Mg/ha and 53.7 Mg/ha per year, respectively. The soil treatment produced up to 24.2 Mg/ha per year. The plants grown in the compost and vermicompost treatments exhibited a greater plant height, width, length of leaflets and number of leaflets, which resulted in higher fruit productivity. The fruits produced in the three treatments reached acceptable values of °Brix.