Alternanthera philoxeroides
Alligator Weed at Acton, ACT
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| Alternanthera philoxeroides | RWPurdie | 29 Dec 2022 |
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Significant sighting
User's notes
Small but dense infestation between edge of lake and dense reed-bed 2 m tall, growing in wet mud. Another larger infestation about 45 metres further along lake edge at 35 17 24.7 S, 149 06 55.3 E in similar habitat.
4 comments
30 Dec 2022
@MichaelT I think this is one for the National Capital Authority - but can you please alert their weeds officer
3 Jan 2023
Hi @MichaelMulvaney this site was mapped and treated with glyphosate on the 2/11/22 as can be seen on the Invasive plants dashboard (https://actgov.maps.arcgis.com/apps/dashboards/5449adb632884d68aeb585e3e73dde99) this chemical takes some time to have effect, so it probably won't have browned off yet.
3 Jan 2023
Thanks Michael - great that you and your crew are one step ahead of me - will double check treatments in future
3 Jan 2023
Michael T: was a larger infestation about 45 metres further along the lake edge at 35 17 24.7 S, 149 06 55.3 E also treated on 2/11/22?
Location information
- Coordinates 149.115778-35.290389
- Maps Lake Burley Griffin West Mount Ainslie to Black Mountain
- Places Acton, ACT
Sighting information
- 16 - 100 Abundance
- 29 Dec 2022 11:47 AM Recorded on
- RWPurdie Recorded by
- 30cm to 1 metre Plant height
- Yes In flower
Collections
- Significant RWPurdie Canberra & Southern Tablelands NatureMapr Alternanthera philoxeroides Other Fresh Water Plants Plants
Species information
- Alternanthera philoxeroides Scientific name
- Alligator Weed Common name
- Not Sensitive
- Exotic
- Major weed or pest
- Up to 630m Recorded at altitude
- External link More information
Record quality
Quality score
5 / 7
- Images or audio
- More than one media file
- Verified by an expert moderator
- Description
- Additional attributes
- Nearby sighting(s) of same species
- GPS evidence of location