Watch out for witchweed.

Bibliographic Details
Format: Government Document eBook
Language:English
Published: [Beltsville, Md.] : United States Department of Agriculture, Animal and Plant Health Inspection Service, 2012.
Series:Program aid (United States. Department of Agriculture) ; no. 1669.
Subjects:
Online Access:https://purl.fdlp.gov/GPO/gpo117129
Description
Item Description:"Issued October 1999-Reissued April 2012 (online only)"--Page 4.
Physical Description:1 online resource (4 unnumbered pages) : color illustrations.