Tree Rhododendron

రోడోడెండ్రాన్ ఎరుపుകാട്ടുപൂവരശ്লালী গুরাঁস

Rhododendron arboreum Sm.

light
Part sun
water
Medium
tall
12 m
wide
7.6 m

Ericaceae

When it flowers

Flowers all year in the tropics.

Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.

PetsRHS lists it as toxic to dogs and cats (25 Oct 2026)
PeopleNo safety information yet

If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.

Something wrong with it?

About it

Grows as
TreeKew's checklist, not yet checked
Climate
TemperateKew's checklist, not yet checked
Wild in
Indian Subcontinent to S. Tibet and N. MyanmarKew's checklist, not yet checked
Light
Part shade (3 to 6 h)Read from RHS and Wikipedia, checked by a majority of its sourcesBacked by both sources
Height
12 mRead from RHS and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: RHS 8–12 m; Wikipedia 12–12 m
Spread
7.2 m to 8.0 mRead from RHS and Wikipedia, checked: the middle of what its sources sayHalfway between its 2 sources, which differ. Sources differ: RHS 2.5–4 m; Wikipedia 12–12 m
Water
Average: moist, well drainedRead from RHS, one source
Flowers
White, red, pinkRead from RHS and Wikipedia, checked by a majority of its sourcesBacked by both sources
Coldest it survives
-10 °C (USDA zone 8a)Read from RHS, one source

Not known yet: heat, hottest it survives.

In other languages (12)

root
ཨེ་ཏོ་མེ་ཏོག, लालीगुराँस
Chinese (China)
树形杜鹃
Chinese
樹形杜鹃, 红花杜鹃, 树形杜鹃
Thai
คำแดง
Russian
Рододендрон древесный
Danish
catawbarhododendron
Polish
różanecznik drzewiasty
Finnish
puualppiruusu
French
Rhododendron arborescent
Slovak
rododendron stromovitý
Lithuanian
Aukštasis rododendras
Ukrainian
Рододендрон деревний

Where this comes from

A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.