Betulaceae
Red alder
Alnus rubra
- Family
- Betulaceae
- Genus
- Alnus
Pet and kid safety: not checked yet. Check pet-safe plants
Is yours looking unwell? Scan your plant — free
Common names
By language (26)
- Arabic
- نغت أحمر
- arz
- النوس احمر
- azb
- قیرمیزی قیزیل آغاج
- Azerbaijani
- Qırmızı qızılağac
- Bulgarian
- Червена елша
- Catalan
- Aulne rouge
- Chinese
- 红桤木, 美國赤楊, 赤楊
- English
- Red alder, Oregon alder, Western alder
- Finnish
- Punaleppä, Oregoninleppä
- French
- Aulne rouge
- German
- Rot-Erle, Aulne rouge, Oregon-Erle, Roterle
- Hebrew
- אלנוס מאדים
- Hungarian
- Vörös éger
- Icelandic
- Ryðölur
- Italian
- Ontano rosso
- Japanese
- レッドオルダー, アメリカアカハンノキ
- koi
- Гӧрд ловпу
- Lithuanian
- Aulne rouge
- Norwegian Bokmål
- Rødor
- Persian
- توسکای قرمز
- Polish
- Olsza czerwona
- Russian
- Ольха красная
- Spanish
- Aliso rojo, Aliso rojo americano
- Swedish
- Rödal, Aulne rouge
- udm
- Горд лулпу
- Welsh
- Gwernen goch
Synonyms
- Alnus incana var. rubra (Bong.) Regel
- Alnus oregana Nutt.
- Alnus rubra f. pinnatisecta (Starker) Rehder
- Alnus rubra var. pinnatisecta Starker
- Alnus rubra var. rubra
Flowers
- In flower
- March to April (from 96 flowering iNaturalist observations worldwide)
- Flower colour
- red (USDA PLANTS Database)
Characteristics
- Growth habit
- Tree
- Lifespan
- Perennial
- In the US and Canada
- Alaska: native, Canada: native, Lower 48 states: native
Photos
FlowerPhoto: Garth Harwood, CC BY 4.0, from iNaturalist 
FlowerPhoto: DeeF, CC BY 4.0, from iNaturalist 
FlowerPhoto: Harry Podschwit, CC BY 4.0, from iNaturalist 
FlowerPhoto: elik03, CC BY 4.0, from iNaturalist 
Photo: Casey H. Richart, CC BY 4.0, from iNaturalist 
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons 
Photo: Anna Pickering, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Sean Haight, CC0, from iNaturalist 
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons 
Photo: Maarten Vanhove, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Tom Erler, CC0, from iNaturalist 
Photo: Walter Siegmund, CC BY 2.5, from Wikimedia Commons
More in Alnus
- Black alderAlnus glutinosaBetulaceae
- Grey alderAlnus incanaBetulaceae
- European green alderAlnus alnobetulaBetulaceae
- Italian alderAlnus cordataBetulaceae
- Japanese alderAlnus japonicaBetulaceae
- Andean alderAlnus acuminataBetulaceae
- Nepal alderAlnus nepalensisBetulaceae
- Caucasian alderAlnus subcordataBetulaceae
- Seaside alderAlnus maritimaBetulaceae
- White alderAlnus rhombifoliaBetulaceae
- Formosan alderAlnus formosanaBetulaceae
- Evergreen alderAlnus jorullensisBetulaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.