Alternanthera philoxeroides
Alligator Weed at Fyshwick, ACT
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| Alternanthera philoxeroides | natureguy | 24 Nov 2024 | |
| Alternanthera philoxeroides | natureguy | 24 Nov 2024 |
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Significant sighting
User's notes
Many extensive patches through various areas of the paddocks section of JWNR. Documented whilst on bird surveys. Apparently already alerted to the rangers but not controlled yet, but needs control urgently. There is another very extensive infestation on the Peninsula directly opposite Kingston Foreshore
8 comments
24 Nov 2024
Glad you were there to ID and record this. Sounds like a well-established outbreak.
24 Nov 2024
There are multiple areas where the plant is growing. I can provide the areas I observed it to someone who is interested in control. I presume it has had a while to establish here as this section is seldom visited
24 Nov 2024
Check with Michael Mulvaney for who to contact for outbreaks other than your photo. I think Sightings on CNM go direct to Biosecurity ( or equivalent).
27 Nov 2024
Hi All. This is a well know area that ACT Biosecurity have set aside to conduct a herbicide trial in. A contractor has recently finished treating all of the other known infestations in the Jerrabomberra wetlands. The NCA also are currently treating the alligator weed in lake Burley Griffin. Given the fact that alligator weed is established in nearly all of the urban waterways in the ACT we are now focusing on key areas to manage rather than attempting eradication across the board.
27 Nov 2024
Thanks Harley, its good to get updated, and get the bigger picture.
Sorry to hear that eradication is no longer the goal. I did hope it would be possible to keep selected sub-catchments free.
Sorry to hear that eradication is no longer the goal. I did hope it would be possible to keep selected sub-catchments free.
28 Nov 2024
Luckily Namadgi and Tidbinbilla are still free of alligator weed, though Tid did have a small amount found that we were able to locally eradicate. All of the creeks and lakes in town are still being surveyed and treated but the scale and density of this species have unfortunately made eradication very unlikely.
28 Nov 2024
Is there any way that volunteers familiar with Alligator weed can help with the survey ( has to be a big job )
28 Nov 2024
Posting observations to citizen science are always helpful, as well as using Field maps to map locations. We get alerts from the Atlas of Living Australia on every citizen science observation for key weeds, alligator weed being one. All NatureMapr observations are also imported into our mapping system each night.
Location information
- Coordinates 149.156264-35.305819
- Altitude 554.5m
- Maps Jerrabomberra Wetlands
- Places Fyshwick, ACT
Sighting information
- 16 - 100 Abundance
- 24 Nov 2024 07:48 AM Recorded on
- natureguy Recorded by
- 10cm to 30cm Plant height
- Yes In flower
Collections
- Significant natureguy 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
6 / 7
- Images or audio
- More than one media file
- Verified by an expert moderator
- GPS evidence of location
- Description
- Additional attributes
- Nearby sighting(s) of same species