Ericaceae
Swamp azalea
Rhododendron viscosum
- Family
- Ericaceae
- Genus
- Rhododendron
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Common names
By language (2)
- English
- Swamp azalea, Texas azalea, Hammocksweet azalea
- Russian
- Рододендрон клейкий, Азалия болотная, Болотная азалия
Synonyms
- Anthodendron viscosum (L.) Rchb.
- Azalea glauca Lam.
- Azalea hispida Pursh
- Azalea nitida Pursh
- Azalea oblongifolia Small
- Azalea scabra Lodd. ex A.Gray
- Azalea serrulata Small
- Azalea tomentosa Dum.Cours
- Azalea virens (Michx.) Dum.Cours.
- Azalea viscida Christm.
- Azalea viscosa L.
- Azalea viscosa var. aemulans (Rehder) Ashe
- Azalea viscosa var. hispida (Pursh) Hook.
- Azalea viscosa var. montana (Rehder) Ashe
- Azalea viscosa var. nitida (Pursh) A.Gray
- Azalea viscosa var. virens Michx.
- Rhododendron coryi Shinners
- Rhododendron glaucum G.Don
- Rhododendron glaucum (Lam.) Sweet
- Rhododendron hispidum (Pursh) Torr.
- Rhododendron nitidum (Pursh) Torr.
- Rhododendron oblongifolium (Small) Millais
- Rhododendron ornatum Sweet
- Rhododendron serrulatum (Small) Millais
- Rhododendron viscosum f. viscosum
- Rhododendron viscosum var. aemulans Rehder
- Rhododendron viscosum var. hispidum (Pursh) C.K.Schneid.
- Rhododendron viscosum var. montanum Rehder
- Rhododendron viscosum var. nitidum (Pursh) A.Gray
- Rhododendron viscosum var. ornatum (Sweet) G.Don
- Rhododendron viscosum var. serrulatum (Small) H.E.Ahles
- Rhododendron viscosum var. viscosum
Flowers
- Flower colour
- red (USDA PLANTS Database)
Characteristics
- Growth habit
- Shrub
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Plant problems
Notches in rhododendron leaves: causes and fixesNotches in rhododendron leaves usually mean root weevils. Learn how to spot them, remove adults, and check for root damage.
Rhododendron leaves curling in cold weatherRhododendron leaves often curl naturally in cold weather. Learn how to spot normal winter rolling, prevent drying, and recognize damage.
Photos
Photo: Chrumps, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Elvert Barnes, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons
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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.