Kochia in West Texas (IMAGE) Texas A&M AgriLife Communications Caption Kochia or tumbleweeds can spread across fields by the tumbling action and get caught in fence lines. This is an example of landscape-scale weed spread issues. Credit (Texas A&M AgriLife photo by Dr. Muthu Bagavathiannan) Usage Restrictions With attribution License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.