A materia medica is a collection of knowledge on individual herbal plants and their therapeutic and medicinal uses as well as precautions, identification, and interesting information. Brooke encourages anyone inspired to build a relationship with botanicals to build one of their very own. Below is a quick 7 minuet video by Kyra Grattan, a graduate of Brooke's level one Herbal Roots program on how to set up your Materia Medica.