TEST

Onopordum acanthium

Scotch Thistle at Symonston, ACT

Onopordum acanthium at Symonston, ACT - 12 Oct 2015
Onopordum acanthium at Symonston, ACT - 12 Oct 2015
Request use of media

Identification history

Onopordum acanthium 17 Oct 2015 MichaelMulvaney
Onopordum acanthium 12 Oct 2015 Mike

Identify this sighting


Please Login or Register to identify this sighting.

User's notes

Large patches under trees. Shows attack by introduced weevils.

1 comment

   18 Oct 2015
The photo of the leaf shows stem boring weevils at work, they were first released to control Scotch and Illyrian thistle in 1993, they weaken the plant and reduce seed production rather than killing it outright. the beetle larvae do most of the damage

Please Login or Register to comment.

Location information

Sighting information

  • 1,001 - 10,000 Abundance
  • 12 Oct 2015 08:40 AM Recorded on
  • Mike Recorded by
  • Collections

    Plants Daisies

Species information

  • Onopordum acanthium Scientific name
  • Scotch Thistle Common name
  • Not Sensitive
  • Exotic
  • Major weed or pest
  • Up to 827.86m Recorded at altitude
  • 90 images trained Machine learning
  • In flower
1,893,031 sightings of 21,044 species in 9,272 locations from 12,889 contributors
CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.