Report #45 - Report: Scots Thistle (Onopordum acanthium)

Scots Thistle (Onopordum acanthium) on May 2, 2008

Submitter has sample

Description of specimen

matches descriptions in pertinent floras. I am a professional botanist frequently responsible for noxious surveys

Commentary

Scotch thistle is known to be established in the area of your report and the Harney County Cooperative Weed Management partners have been working on controlling infestations in the area.

I am passing this information along to Jesse Barns the Harney County Weed Supervisor and Bonnie Rasmussen, ODA Weed Specialist, SE Oregon.

Thank you for your submission: Tim Butler, ODA Noxious Weed Control Progarm

Tim Butler
May 9, 2008, 7:58 a.m.

Location

Onopordum acanthium (ONAC)
East side of Malheur River south of highway 20 and north of Cat Rock. Almost all on State land.

site # Zone UTMmE UTMmN Elev (ft)Obs Date Species Area (ft)
2 11T 395779 4845594 3647 4/17/2008 ONAC 50 x50
4 11T 395285 4843728 3464 4/17/2008 ONAC
5 11T 394993 4844473 3466 4/17/2008 ONAC 100 x 100
6 11T 394931 4844647 3466 4/17/2008 ONAC 50 x 50
7 11T 395014 4846364 3476 4/17/2008 ONAC 50 x 150
8a 11T 394712 4846661 3480 4/17/2008 ONAC 30 x 50

site # Species Area (ft) Notes
2 ONAC 50 x50 30 x 30' dense
4 ONAC
5 ONAC 100 x 100 NOT DENSE, EVENLY SCATTERED
6 ONAC 50 x 50 DENSE EVENLY SCATTERED
7 ONAC 50 x 150 SCAT-PATCHY
8a ONAC 30 x 50 SCAT-FEW

Scots Thistle (Onopordum acanthium) on May 2, 2008

Description of specimen

Commentary

Location

Expert Reviewer