What do you use to control this species?

Reporter
Nov. 16, 2010, 12:02 a.m.

Hey, Curtis. Good to hear from you. Sorry to take so long getting back to you. It does sound like milk thistle: there have been patches found at the north end of the wetlands along the railroad, and downstream nearer the landfill, so it's not big surprise, but it does concern me. We'll try to get out for a look in the next month and scout the area. If we have any trouble finding it, I'll check back with you. For management, we've been using low rates of triclopyr, which seems to be fairly effective.

If you see any other patches, feel free to contact me directly at mitch.bixby@portlandoregon.gov.

Thanks for the report!
-Mitch

Mitch Bixby
Nov. 29, 2010, 9:44 a.m.