Plants
Other Wildflowers & Herbs
Sighting 4670741

Oxypetalum coeruleum

Tweedia or Southern Star at Chapman, ACT

Oxypetalum coeruleum at Chapman, ACT - 12 May 2025 11:21 AM
Oxypetalum coeruleum at Chapman, ACT - 12 May 2025 11:21 AM
Oxypetalum coeruleum at Chapman, ACT - 12 May 2025 11:21 AM
Oxypetalum coeruleum at Chapman, ACT - 12 May 2025 11:21 AM
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Identification history

Oxypetalum coeruleum 25 May 2025 Tapirlord
Oxypetalum coeruleum 24 May 2025 PGL

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User's notes

Around 90 -100 plants removed from eastern side of Cooleman Trig hill in last month. Many had already released seed, so more of these tough invasive weeds can be expected in spring.

6 comments

HarleyB wrote:
   26 May 2025
Can the location accuracy be updated to reflect where the control work was done? It makes it easier for follow up control, as the current location is in a backyard. I can let the area Ranger know to expect more in Spring. Cheers
PGL wrote:
   26 May 2025
Thanks HarleyB, I'd overlooked that. I don't know how to edit this on NatureMapr, but the coordinates are below. Are you able to amend this record?

Peter

-35.354539, 149.030247
HarleyB wrote:
   26 May 2025
thanks @PGL

I am not able to amend the location but I can use your co-ordinates to transfer to Field maps for the Ranger to see the location.
@MichaelMulvaney @Tapirlord may be able to adjust the location.
PGL wrote:
   26 May 2025
Thanks. Btw, I’m not sure that the rangers/PCS see this as a priority species, and nor does Cooleman Ridge Parkcare (of which I’m a member). They focus on SJW, verbascum, ALG etc. But as tweedia is only in a small area of the ridge so far, for the last few years I’ve been trying to at least prevent its spread.
MichaelMulvaney wrote:
   26 May 2025
Thanks Peter, have amended the location. Pretty sure this weed was brought into the ACT via stock and/or hay transferred to Red Hill from northern NSW, I have removed hundreds from Red Hill and although not forming monocultures is a persistent weed and very hard to get rid of in rocky places once established. So I strongly support and thank you for your efforts on Cooleman Ridge. I think it has been moved around the ACT by infrastructure and possibly park staff vehicles moving from infected areas as it does seem to be first recorded at new locations as established next to vehicle tracks.
Mike wrote:
   26 May 2025
The main patch on Isaacs Ridge Oxypetalum coeruleum (Tweedia or Southern Star) is nowhere near a track. I am surprised the infestation on Hindmarsh Drive near Tamar Street has not moved into Mugga Mugga; it is one metre from the edge of the road so the seeds could be picked up by any passing vehicle and travel anywhere.

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