Persicaria prostrata
Creeping Knotweed at Watson, ACT
Identify this sighting
| Persicaria prostrata | abread111 | 13 Jan 2026 | |
| Persicaria prostrata | abread111 | 13 Jan 2026 | |
| Unverified | HappyWanderer | 12 Jan 2026 |
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User's notes
growing along the banks of the small farm dam
2 comments
13 Jan 2026
hello abread111 and https://canberra.naturemapr.org/users/25635, I haven't seen Creeping Knotweed with flowers of this colour; I only know CK with white greenish flowers. Could it be that photos depict 2 different plant species? leaves in first 2 photos seem to belong to Creeping Knotweed; I'm not sure about the flower spikes in last 3 photos; the flowers look more like Lythrum hyssopifolia, Small Loosestrife which we also recorded around the dam; see https://canberra.naturemapr.org/sightings/4642064. See also id-features of Small Loosestrife at https://vicflora.rbg.vic.gov.au/flora/taxon/23fb671c-b693-4b6c-9edf-f240374c10fb
14 Jan 2026
I agree there are 2 species here. Please separate them. Sorry I did not look at all the photos when I verified the first photo on my phone.
Location information
- Coordinates 149.172612-35.224610
- Altitude 646.0m
- Maps Mount Majura
- Places Watson, ACT
Sighting information
- At least 1 Abundance
- 12 Jan 2026 10:52 AM Recorded on
- HappyWanderer Recorded by
- Less than 10cm Plant height
Collections
- HappyWanderer NatureMapr Canberra & Southern Tablelands Persicaria prostrata Other Wildflowers & Herbs Plants
Species information
- Persicaria prostrata Scientific name
- Creeping Knotweed Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 1241.4m Recorded at altitude
- External link More information
Seasonal activity
-
In flower
JFMAMJJASOND
Record quality
Quality score
7 / 7
- Images or audio
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
- Description
- Additional attributes