Red trillium
Trillium erectum L.
- light
- Part–shade
- water
- Medium
- tall
- 33 cm
- wide
- 38 cm
Melanthiaceae
Formerly Trillium acuminatum, Trillium atropurpureum, Trillium flavum, Trillium foetidum, and 5 more
When it flowers
JFMAMJJASOND
Not known yet in the tropics: too few flowering observations to read a season from.
PetsNo pet-safety information yet
PeopleNC State Extension lists it as mildly poisonous (fruits, roots) (25 Oct 2026)
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
- Rhizomatous geophyteKew's checklist, not yet checked
- Climate
- TemperateKew's checklist, not yet checked
- Wild in
- E. Canada to E. U.S.A.Kew's checklist, not yet checked
- Light
- Part shade to shade (under 6 h)Read from NC State Extension, one source
- Height
- 20 cm to 46 cmRead from NC State Extension, one source
- Spread
- 30 cm to 46 cmRead from NC State Extension, one source
- Water
- Average: moist, well drainedRead from NC State Extension, one source
- Flowers
- White, yellow, red, pink, purple, greenRead from NC State Extension, one source
- Coldest it survives
- -34.4 °C (USDA zone 4a)Read from NC State Extension, one source
Not known yet: heat, hottest it survives.
In other languages (1)
- Chinese
- 褐花延龄草
Where this comes from
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- NC State Extension, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, CC BY-SA 2.5 ca
- 3D model: Trillium erectum (built for Vanagrha) by Vanagrha, own
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.