Renz

Mark Renz UW Madison Associate Professor and Extension Specialist, Chelsea Zegler UW Madison Associate Research Specialist Well the season is nearly over, but we wanted to point out a weed species that had a prolific year: …

Mark Renz UW Madison Associate Professor and Extension Specialist, Chelsea Zegler UW Madison Associate Research Specialist Biennial wormwood is not new to Wisconsin, as has been in the state over 100 years, but I have seen …

Mark Renz UW Madison Associate Professor and Extension Specialist, Sam Marquardt UW Madison Assistant Outreach Specialist Pigweeds aren’t going away anytime soon. In fact, Palmer amaranth and waterhemp are moving into new areas of Wisconsin where …

Mark Renz UW Madison Associate Professor and Extension Specialist Concern about the continued spread of waterhemp and Palmer amaranth exist in Wisconsin. While invasion of these species has been much higher in adjacent states, populations …

Mark Renz UW Madison Associate Professor and Extension Specialist, Chelsea Zegler UW Madison Associate Research Specialist Wild buckwheat is also known as black-bindweed or false buckwheat. While this species has been in Wisconsin for well over …

Mark Renz UW Madison Associate Professor and Extension Specialist, Chelsea Zegler UW Madison Associate Research Specialist We wanted to emphasize Wisconsin’s common weedy biennial thistles in this weed identification series installment.  While Wisconsin has dozens of …

WEED IDENTIFICATION SERIES PLANT #2 Horseweed Mark Renz UW Madison Associate Professor and Extension Specialist (mrenz@wisc.edu), Chelsea Zegler UW Madison Associate Research Specialist (zegler@wisc.edu) Weed species #2 that we wanted to emphasize this spring is horseweed, …

Mark Renz UW Madison Associate Professor and Extension Specialist (mrenz@wisc.edu), Chelsea Zegler UW Madison Associate Research Specialist (zegler@wisc.edu) Introducing a new Weed ID series of factsheets With everyone gearing up for the field season we thought …