Winter annual weeds emerge in the fall and set seed late spring or early summer. In hay production, certain winter annuals will invade older hay stands and may be competing with the crops resources. Such weeds include: marestail, field pennycress, henbit, and chickweed. Management options for these weeds may include chemical control with a spring applied herbicide and timely cutting intervals. Recently Field Crops Specialist, Josh Putman, has been out scouting fields for weed and insect problems in forage fields, wheat, and triticale. Many of the older hay stands seem to have a large number of winter annuals present. It is important to correctly identify these weeds as some can be more problematic than others. If identification or confirmation is needed, please contact Josh Putman at 716-490-5572 or at jap473@cornell.edu. For more information on spring weed control in hay stands, please follow the link here.