The aim of this book was to verify the influence of different dynamizations of the homeopathic medicines Arnica montana, Calcarea carbonica, Carbo vegetabilis, Silicea terra, Phosphorus, Pulsatilla nigricans and the homeopathic preparation of açaí residue on the development of two lettuce cultivars. The lettuce cultivars "Veronica" and "Regina" were chosen for the trial. In the analysis of the development of the "Veronica" cultivar, it was observed that in almost all the parameters evaluated, the medicine Carbo vegetabillis 6CH, followed by Calcarea carbonica 12CH, Silicea terra 12CH, Phosphorus 12CH, Pulsatilla nigricans 12CH and the preparation of Açaí 12CH contributed to a better performance of the seedlings. The medicines Silicea terra 6CH and Carbo vegetabillis 6CH influenced all the variables studied in the "Regina" cultivar, except for the growth of the root system.