Botanical atlas
Gumweed
Grindelia robusta
Long before it reached apothecary shelves, gumweed was gathered by California tribes and other Native peoples of the West, who prized its sticky, resin-laden buds for troubled lungs and irritated skin. Nineteenth century Eclectic physicians took note of these traditions and folded gumweed into their own materia medica, reaching for it during bouts of bronchitis, whooping cough, and asthma. It became just as well known as a wash for the itch and blister of poison oak and poison ivy, its resins believed to form a soothing film over irritated skin. The plant earned its common name honestly, since every bud arrives coated in a thick, gummy resin that clings to the fingers of anyone who picks it.
In tradition.
Long before it reached apothecary shelves, gumweed was gathered by California tribes and other Native peoples of the West, who prized its sticky, resin-laden buds for troubled lungs and irritated skin. Nineteenth century Eclectic physicians took note of these traditions and folded gumweed into their own materia medica, reaching for it during bouts of bronchitis, whooping cough, and asthma. It became just as well known as a wash for the itch and blister of poison oak and poison ivy, its resins believed to form a soothing film over irritated skin. The plant earned its common name honestly, since every bud arrives coated in a thick, gummy resin that clings to the fingers of anyone who picks it.
Traditional preparations.
A warm, resinous infusion traditionally sipped to ease coughing and soothe irritated airways.
Steep 1 teaspoon of dried gumweed leaf and bud in 250 ml of just-boiled water for 10 to 15 minutes, then strain. Drink up to twice daily.
A cooled infusion traditionally dabbed on skin irritated by poison oak, poison ivy, or minor rashes.
Steep 2 teaspoons of dried gumweed in 250 ml of just-boiled water for 15 minutes, strain, and let cool completely before applying to the skin with a clean cloth.
Safety.
Gumweed is resinous and best used in small, occasional amounts, since excess can upset the stomach, and traditional sources caution against large doses with heart or kidney conditions. As a daisy-family plant it may trigger reactions in those sensitive to ragweed or chrysanthemums, and it's best avoided during pregnancy and nursing.
Our sister app HerbLens identifies gumweed from a photo and keeps its full botanical portrait: growing guide, harvest notes, and look-alike warnings.
View on HerbLensAsk HerbSense how gumweed is traditionally used and what to know before trying anything at home.
Ask about GumweedHerbSense shares traditional herbal knowledge for education, not diagnosis or treatment. Herbs can interact with medicines and conditions. Speak with your doctor before acting on anything here, and seek care promptly for anything severe, sudden, or worsening.