P&PDL Picture of the Week for
May 14, 2007

What to do about yellow fields

Glenn Nice, Weed Diagnostician, Botany & Plant Pathology, Purdue University

We are getting many phone calls about Indiana’s yellow spring. The plant that turns Indiana yellow every year is cressleaf groundsel, also known as butterweed (Packera glabella, formerly Senecio glabella). Below are two articles concerning this plant and how to control it. We also invite you to visit the Purdue Weed Science page for more information regarding weed management in Indiana ( http://www.btny.purdue.edu/weedscience/ ).

What Do We Do About the Yellow Fields? (pdf file)

Cressleaf Groundsel and Indiana (pdf file)

Click image to enlarge

Cressleaf groundsel in field

Cressleaf groundsel in field
Photo courtesy of Bill Johnson

Cressleaf groundsel

Cressleaf groundsel

Purdue Plant & Pest Diagnostic Lab Purdue Cooperative Extension Service