P&PDL Picture of the Week for
May 11, 2009

Purple Striping

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

This purple striped field almost looks like it was planted this way.  Actually it was planted this way, just not intentionally.  When looking into the history of this field, last year winter wheat was planted and cut as hay in the spring.  At the time the wheat was cut, purple deadnettle and henbit were producing seed.  These winter annuals were cut with the hay and raked into rows to dry.  They produced seed and dropped them in these nice parallel rows.  There you have it, a purple striped field.

Click image to enlarge

Purple deadnettle in field

Purdue Plant & Pest Diagnostic Lab Purdue Cooperative Extension Service