Source-based prescribing is an accepted and advanced methodology in Classical Homeopathy to find the simillimum, which takes into account the classical materia medica approach combined with characteristics of the remedy source material. This area includes utilizing biology or phytochemistry, morphology, genetics, ecology, common uses, folklore and behavioral traits. Expanding the understanding of our remedy source characteristics, it is possible to enlarge the range of useful remedies we prescribe successfully.