Materia Medica

Original botanical visualization of Syzygium aromaticum clove tree, red and green flower buds, glossy opposite leaves, dried culinary cloves
Clove (Syzygium aromaticum) — Clove Tree, Lavanga
A researched guide to clove (Syzygium aromaticum) covering botanical identity, culinary and traditional use, eugenol chemistry, modern research, essential-oil toxicity, medication cautions, and cultivation. Read more...
Hops (Humulus lupulus) — Common Hop, European Hop
A guide to Humulus lupulus covering brewing, traditional calming use, sleep research, phytoestrogenic constituents and sedation safety. Read more...
Original botanical visualization of Bursera species copal resin-producing tree, peeling bark and golden resin, sunlit dry tropical setting
Copal (Bursera spp.) — Copal Resin, Mayan Copal
A botanical and cultural guide to Bursera copal resins covering key species, Mesoamerican ceremonial traditions, chemistry, modern research, incense-smoke safety, identification, and sustainable harvesting. Read more...
Horehound (Marrubium vulgare) — White Horehound, Common Horehound
A guide to Marrubium vulgare covering horehound's traditional cough and bitter use, preparation, limited research, pregnancy cautions and folklore. Read more...
Original botanical visualization of Piper cubeba cubeb pepper vine, green to dark pendant fruit spikes and bowl of dried tailed cubeb pepper
Cubeb (Piper cubeba) — Tailed Pepper, Java Pepper
A whole-plant guide to cubeb (Piper cubeba), also called Java or tailed pepper, covering identification, culinary and traditional use, lignan and essential-oil chemistry, modern research, possible interaction concerns, and safety. Read more...
Horsetail (Equisetum arvense) — Field Horsetail, Scouring Rush, Shavegrass
A guide to Equisetum arvense covering horsetail identification, sterile stems, traditional urinary use, silica, thiaminase concerns and safety. Read more...
Veronicastrum virginicum (Culver's Root), realistic botanical photo
Culver's Root (Veronicastrum virginicum) — Black Root, Bowman's Root
A whole-plant guide to Culver's root (Veronicastrum virginicum) covering native-plant identification, Indigenous and historical context, limited modern research, strong cathartic/emetic safety concerns, pregnancy cautions, and pollinator-garden value. Read more...
Rhamnus cathartica (Common Buckthorn), realistic botanical photo
Common Buckthorn (Rhamnus cathartica) — Purging Buckthorn, Hart's Thorn
A safety- and law-focused guide to common buckthorn covering invasive ecology, historical cathartic use, gastrointestinal toxicity, Illinois legal restrictions, identification, and safe handling. Read more...
Hyssop (Hyssopus officinalis) — Garden Hyssop, Holy Herb
A guide to Hyssopus officinalis covering culinary and traditional use, respiratory folklore, essential-oil seizure risk, pregnancy cautions and symbolism. Read more...
Iceland Moss (Cetraria islandica) — Iceland Lichen, Icelandic Lichen
A guide to Cetraria islandica explaining why Iceland moss is a lichen, its food and throat-soothing traditions, preparation, evidence and source-quality safety. Read more...
Larrea tridentata (Chaparral / Creosote Bush), realistic botanical photo
Chaparral (Larrea tridentata) — Creosote Bush, Greasewood
A safety-focused whole-plant guide to chaparral covering desert-botany context, traditional use, NDGA research, serious liver toxicity, kidney concerns, and modern safety guidance. Read more...
Chondrus crispus (Irish Moss), realistic photo
Irish Moss (Chondrus crispus) — Carrageen, Carrageen Moss
A guide to Chondrus crispus covering Irish moss as red algae, traditional food use, carrageenan, variable iodine, thyroid caution and source quality. Read more...