Botanical atlas
Bog Rosemary
Andromeda polifolia
This plant is kept in the atlas for identification and safety, not for use. Read the safety notes below before handling it, and keep it away from children, cats, and food.
Bog rosemary earned its common name from its narrow, rosemary-like leaves, which curl gray and leathery along wiry red stems in the cold, waterlogged bogs it calls home. Unlike its herbal namesake, it was never a kitchen or medicine cabinet plant. Northern peoples who shared the peatlands with it generally knew it by reputation rather than by recipe, a beautiful thing to admire underfoot and to keep livestock away from, not to gather. Its chief legacy in folk knowledge is a warning passed down alongside its dainty spring flowers.
Safety.
Andromeda polifolia is toxic and should never be ingested in any form. Every part of the plant contains grayanotoxins (andromedotoxin), compounds that can cause vomiting, low blood pressure, irregular heartbeat, breathing difficulty, and other serious symptoms in humans and animals, including livestock and pets that graze on it. Honey made from its nectar has also been linked to poisoning. It carries no history of traditional internal or external medicinal use, only a longstanding reputation as a plant to leave alone. Keep it out of reach of children and grazing animals if grown ornamentally, and contact a poison control center or a qualified medical professional immediately if ingestion is suspected.
Our sister app HerbLens identifies bog rosemary from a photo and keeps its full botanical portrait: growing guide, harvest notes, and look-alike warnings.
View on HerbLensHerbSense 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.