Alternanthera philoxeroides
Alligator Weed at Melba, ACT
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| Alternanthera philoxeroides | JaneR | 14 May 2024 |
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User's notes
This large infestation and others nearby on creek banks were treated by contractors on 8 April. The creek must have been running high and swift on that date (after heavy rain on Sat 6th) and hopefully chemical was not sprayed onto floating stems. Some leaves have responded to spray but not enough so request these plants receive a second treatment.
2 comments
14 May 2024
Image lacks clear diagnostic features for the species but confirmed as Alternanthera philoxeroides due to being a repeat observation.
As for treatment: Alternanthera philoxeroides is renowned for being difficult to eradicate, and reduction by repeated treatments is common practice.
As for treatment: Alternanthera philoxeroides is renowned for being difficult to eradicate, and reduction by repeated treatments is common practice.
14 May 2024
JaneR - your note on repeated treatments must be 'normal' for an aquatic weed. All I hoped to do with this re-sighting (and apols for the indistinct photo from opposite side of the creek that was flowing strongly again) was suggest that chemical treatment here was probably even less effective than 'normal' given the high water flow in April and that HarleyB and Biosecurity could well flag these locations for a revisit sooner than later.
Location information
- Coordinates 149.050700-35.218820
- Places Melba, ACT
Sighting information
- 16 - 100 Abundance
- 7 May 2024 05:14 PM Recorded on
- pinnaCLE Recorded by
Collections
- pinnaCLE 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
4 / 7
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- Verified by an expert moderator
- Nearby sighting(s) of same species
- Description
- More than one media file
- GPS evidence of location
- Additional attributes