Siam weed
നീലപ്പീലിহাড়মটমটিয়া
Chromolaena odorata (L.) R.M.King & H.Rob.
- light
- —
- water
- —
- tall
- 2.5 m
- wide
- —
Asteraceae
Also called Crucita, Triffid weed, Jack-in-the-bush, Armstrong's Weed, Chromolaena
Formerly Chromolaena barranquillensis, Chromolaena clematitis, Chrysocoma volubilis, Eupatorium atriplicifolium, and 18 more
When it flowers
Flowers October to February 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.
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
- PerennialKew's checklist, not yet checked
- Climate
- SubtropicalKew's checklist, not yet checked
- Wild in
- Trop. & Subtrop. AmericaKew's checklist, not yet checked
- Height
- 2.5 mRead from Wikipedia, one source
- Flowers
- White, pinkRead from Wikipedia, one source
Not known yet: light, spread, water, coldest it survives, heat, hottest it survives.
Grow it with
Suggested by a rule, not by a gardener: same climate (kew), flowering when this plant does not (inaturalist), and a different shape.
Cape leadwortFlowers March to September, when this does not
Cotton RosemallowFlowers March to September, when this does not
Crimson bottlebrushFlowers March to September, when this does not
LantanaFlowers March to September, when this does not
LemonFlowers March to September, when this does not
Mexican petuniaFlowers March to September, when this does not
In other languages (12)
- Chinese
- 香澤蘭, 飛機草, 飞机草
- Portuguese
- erva-do-sião
- root
- cihuapatli, krus tok'te, sich
- myn
- x-tokabal
- Spanish
- Albahaquilla, Crucita, Rompe saragüey
- Chinese (China)
- 飞机草
- Japanese
- ヒマワリヒヨドリ
- Indonesian
- Kirinyuh, Kolombos
- Thai
- สาบเสือ
- French
- Herbe du Laos
- Afrikaans
- Chromolaena, Paraffienbos
- Russian
- Хромолена душистая
Where this comes from
- iNaturalist, read 2026-10-26, CC0-1.0 (observation counts)
- Wikidata, read 2026-10-26, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- Wikipedia, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, Public domain
- iNaturalist, read 2026-10-26, CC BY
- iNaturalist, read 2026-10-26, CC BY
- iNaturalist, read 2026-10-26, CC0
- 3D model: Chromolaena odorata (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.