Management brief
Ageratina adenophora
Asteraceae · 34 Hawaiian specimens · 1910–1997
What this means for control work
Fruit has been recorded Mar to May. Treat before it, not during.
This window comes from specimens collected outside Hawaiʻi — 61 of them — because only 2 Hawaiian specimens carry a scored date. It shows the shape of the species’ cycle. It is not a Hawaiian calendar, and it should not be used as one for scheduling.
Wind-carried. Distance depends on the day rather than on an animal, and a plant left standing through its fruiting window seeds the neighbourhood.
Recorded by month
61 specimens, collected outside Hawaiʻi
- fruiting
- flowering
Where it has been collected
2 specimens and 6 field observations, all georeferenced
Islands
- Oʻahu 13
- Maui 10
- Molokaʻi 4
- Lānaʻi 2
- Hawaiʻi 1
Elevation
Recorded from 305 to 2579 m, on 7 specimens.
Recorded in the field
photographs behind the months above
flowering
flowering
flowering
vegetativeEach one dated and located, with the stage the observer recorded · Olivier Niederhauser, Mike Ross, sea-kangaroo, licensed under Creative Commons · see the coverage →
The specimens
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Ageratina adenophora
Asteraceae · US · 1940
Hawaiian Islands
Ageratina adenophora
Asteraceae · US · 1916
Hawaiian Islands
Ageratina adenophora
Asteraceae · US · 1963
Hawaiian Islands
Ageratina adenophora
Asteraceae · US · 1916
Hawaiian Islands
Ageratina adenophora
Asteraceae · US · 1972
Hawaiian Islands
Ageratina adenophora
Asteraceae · US · 1910
Hawaiian Islands