White snakeroot
நாகசுவந்தை
Ageratina altissima (L.) R.M.King & H.Rob.
- light
- Any light
- water
- Medium
- tall
- 1.1 m
- wide
- 91 cm
Asteraceae
Formerly Ageratum altissimum, Eupatorium rugosum, Kyrstenia altissima
When it flowers
Not known yet in the tropics: too few flowering observations to read a season from.
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
- Wild in
- E. Canada to U.S.A.Kew's checklist, not yet checked
- Light
- Sun or shadeRead from NC State Extension, one source
- Height
- 61 cm to 1.5 mRead from NC State Extension, one source
- Spread
- 61 cm to 1.2 mRead from NC State Extension, one source
- Water
- Average: moist, well drainedRead from NC State Extension, one source
- Flowers
- WhiteRead from NC State Extension, one source
- Coldest it survives
- -40 °C (USDA zone 3a)Read from NC State Extension, one source
Not known yet: grows as, climate, heat, hottest it survives.
In other languages (3)
- Finnish
- isovalkolatva
- Chinese
- 假白花草, 蛇根泽兰
- Tamil
- நாகசுவந்தை
Where this comes from
- Wikidata, read 2026-10-26, 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 3.0
- 3D model: Ageratina altissima (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.