Black walnut (Juglans nigra): traditional uses, compounds such as juglone, preparation methods, contraindications and how it differs from the common walnut.

Sesame (Sesamum indicum): traditional uses, lignans such as sesamin, tahini and gomashio recipes, and a clear warning about severe allergy.

Purple loosestrife (Lythrum salicaria): names, traditional uses, tannins, how to make the tea and cautions on iron, pregnancy and drug interactions.

Harungana madagascariensis: traditional uses, parts used, compounds, preparation methods and cautions on its laxative effect and photosensitivity.

Soapwort (Saponaria officinalis): learn about traditional uses, saponins, external-use recipes, precautions for internal use and the risk of the seeds.