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Toxic☠️ To avoid

⚠️ Alpenrose

Rhododendron ferrugineum · Ericaceae

🧠 To remember it“Rusty scales underneath, don't eat, even if it smells good above” — the rusty underside of the leaves marks the species to keep away from any foraging.
Alpenrose — Rhododendron ferrugineum

🔍 Identify it without mistakes

Low evergreen shrub, 0,3 to 1 m high, forming dense characteristic carpets ("rhododendron heaths") on acidic high-altitude slopes. Alternate, leathery, elliptical leaves, shiny dark green above, covered beneath with small rust-colored ("rusty") scales typical of the species and giving it its name. Large pink to red flowers in terminal clusters, heavily visited by bees — the source of "mad honey".

  1. underside of leaves covered with tiny rusty scales
  2. leathery evergreen elliptical leaves
  3. dense low carpet habit typical of acidic high-altitude slopes
  4. showy pink to red flowers in terminal clusters
Size0,3-1 m
Floweringjuin-août
Habitatsubalpine and alpine acidic heaths and slopes, 1600-2800 m, Alps and Pyrenees, siliceous soils

💊 Healing with it

no safe use on your own; the plant is not consumed directly, but honey produced by bees foraging on its flowers can concentrate grayanotoxins

Level of evidence : traditional use — Mad honey — Wikipedia; Food chain surveillance platform, grayanotoxins

⚠️ the entire plant contains neurotoxic grayanotoxins; honey resulting from massive foraging on rusty-leaved alpenrose (rare in practice in Europe, with no documented cases of poisoning from European honey to date) can cause hypotension and bradycardia — make sure to distinguish it from Rhododendron ponticum, the main source of historical Black Sea "mad honey"

🪓 Other bushcraft uses

  • no safe direct use — observation plant only
Sources (3)

No entry replaces a certain identification in the field, or medical advice. When in doubt: don't eat it. If ingestion is suspected: poison control or 112/911.