Weeds

Registration is open for the Southeast Michigan Virtual Pest and Crop Management Update

Published on January 12, 2021
Registration for the Jan. 26, 2021, meeting will include a free 2021 Weed Control Guide shipped to your home.
2021 MSU Weed Control Guide for Field Crops is available

Published on December 16, 2020
Important weed control references now available at MSU Extension Bookstore and MSU Weed Science website.
A mobile-friendly guide for weed identification in nurseries and landscapes is now available

Published on December 11, 2020
This important weed identification tool can be downloaded for free to view on smart phones and tablets.
Virtual pest and field crop management updates for 2021

Published on December 2, 2020
The in-person field crop meetings offered each winter by MSU Extension have moved to online delivery for 2021.
Evaluating seedling wheat stands this fall

Published on November 30, 2020
Before snow blankets the fields, evaluating wheat fields may be helpful.
Farmers needed to help guide direction of future MSU Extension field crop programming

Published on October 23, 2020
The MSU Extension field crops team is asking farmers for guidance by filling out a brief online needs assessment.
Weed management in vineyards starts with fall herbicide application

Published on September 30, 2020
Fall is an important time to control woody perennials and application of preemergence herbicides in vineyards.
Suspect herbicide resistance? Submit weed seeds for screening

Published on August 28, 2020
Collect weed seeds September-October to submit for herbicide resistance screening.
Screening of herbicide resistant weeds in Michigan vegetable fields

Published on July 15, 2020
If you suspect herbicide resistant weeds are impacting your vegetable production, contact us for seed collection to perform herbicide resistance screening.
Poison hemlock identification and control

Published on June 25, 2020
Poison hemlock is a potentially dangerous weed found in Michigan, and identifying it is the first step in controlling it.
Weed control after final harvest in asparagus

Published on June 24, 2020
Clean up asparagus fields now for greater yields next year.
Corn injury from preemergence residual herbicides in 2020 MSU corn herbicide trials

Published on June 23, 2020
Check out the Michigan State University corn herbicide trials on your computer, cell phone or tablet.
EPA’s dicamba cancellation order: What does this mean for Michigan farmers?

Published on June 11, 2020
Options for weed control in Roundup Ready 2 Xtend soybean.
Using Zidua in celery

Published on June 4, 2020
What does the herbicide Zidua bring to the table for celery growers?
Weed control considerations before planting dry edible beans

Published on May 28, 2020
There are several key points to consider before planting dry beans when controlling weeds.
Southwest Michigan field crop update – May 21, 2020

Published on May 21, 2020
High rainfall totals from this past week have put field work on hold, but warmer weather is on the way to get planted crops up and growing.
Lesser celandine: An attractive spring weed that spreads with a vengeance

Published on May 7, 2020
Also known as fig buttercup, lesser celandine forms dense mats that outcompete shady turf and spring ephemerals.
Field Crops Virtual Breakfast on May 21 features post emergent weed control with Erin Burns

Published on May 7, 2020
You’ll get timely information on weed control after crop emergence and a weekly weather update from MSU agriculture meteorologist Jeff Andresen.
Blueberry weed control updates for 2020

Published on May 5, 2020
New materials and label changes in blueberry herbicide recommendations in the 2020 Michigan Fruit Management Guide.
Early season weed control in corn

Published on April 30, 2020
Plan now for successful 2020 weed control in corn.
Creating a weed management plan for hemp

Published on April 30, 2020
Weed control in hemp will require careful planning.
Early-season weed control is important

Published on April 23, 2020
Not starting with a clean field can reduce yields.
Weed management strategies in greenhouses – Part 1: Non-chemical weed control strategies

Published on April 22, 2020
Non-chemical weed control methods inside greenhouses and enclosed structures for ornamental crop production.
Weed management strategies in greenhouses – Part 2: Chemical weed control strategies

Published on April 22, 2020
Chemical weed control methods inside greenhouses and enclosed structures for ornamental crop production.
The next Field Crops Virtual Breakfast will focus on early season weed control

Published on April 18, 2020
MSU Extension’s Field Crops Virtual Breakfast on April 23 features a discussion on early season weed control with Christy Sprague.
2020 Status of herbicide-resistant weeds in Michigan

Published on April 18, 2020
Screening submissions of Michigan’s most notoriously herbicide-resistant weeds decline, yet new species continue to be submitted for screening as well as those from vegetable systems.
Be sure to check out our recently updated Factsheets

Published on April 16, 2020
Weed control in winter wheat: What do I need to consider?, Herbicide Options for Cover Crops Interseeded in Corn, Herbicide-resistant horseweed (marestail) in Michigan: Keys to management in no-till soybean, etc.
Weed control in winter wheat: What do I need to consider?

Published on April 16, 2020
Timely herbicide applications are important for weed control in winter wheat.
Be on the lookout for a new pigweed species, purple amaranth

Published on April 9, 2020
Purple amaranth was identified for the first time in Michigan in 2019.
Options for controlling volunteer potatoes

Published on April 2, 2020
Volunteer potatoes can be hard to manage. Here are a few options for control and daughter tuber suppression.
New rules for using paraquat in 2020 and beyond

Published on March 20, 2020
Growers using paraquat need to be aware of new requirements issued by the Environmental Protection Agency.
MSU Herbicide School offered in Washtenaw County

Published on March 9, 2020
This meeting will aid growers and crop consultants in making wiser decisions regarding herbicide use and reducing weed pressure in prevented planting acres.
Field Crops Webinar Series: Weed management challenges that lurk for 2020

Published on February 18, 2020
The third webinar in the series will cover several options on how to best manage problem weeds, such as horseweed (marestail) and waterhemp, as the next crop season fast approaches.
2020 Weed Control Guide

Published on January 17, 2020
The 2020 MSU Weed Control Guide for field crops is now available online
Fall weed control reminders on late and prevent plant acres

Published on October 16, 2019
Recommendations for fall 2019 weed control that will set the stage for successful spring 2020 weed control
Got weeds? Remove them before they set seed.

Published on September 11, 2019
Ways to conquer those unwanted or unknown plants from invading your gardens or yards
Field Crops Virtual Breakfast to discuss submitting weeds suspected of herbicide resistance for screening

Published on August 26, 2019
Herbicide resistance is becoming more prevalent across Michigan. Consider collecting seeds from your troublesome weed species if you suspect they are resistant to the herbicides you use.
Weed control in late planted corn

Published on July 18, 2019
Make weed control in late planted corn a priority.
Horseweed (marestail) control options in fallow prevent plant fields

Published on July 16, 2019
Weed control needs to be a priority in non-planted fields this summer to prevent future weed problems.
Weed control recommendations for late and prevented planting

Published on June 11, 2019
Due to delayed planting this spring, many critical weed control decisions to be made on planted acres or those that will be planted soon and prevented planting acres.
2019 status of herbicide-resistant weeds in Michigan

Published on May 1, 2019
PPO inhibitor (Group 14) herbicide resistance in Palmer amaranth was confirmed in 2018 as other herbicide resistance issues continue to spread.
Spring blooming lawn and garden weeds: A focus on winter annual identification and management

Published on April 26, 2019
Understand your spring blooming lawn and garden weeds for better control.
Field Crops Virtual Breakfast focuses on early-season weed control

Published on April 18, 2019
MSU Extension’s Field Crop Virtual Breakfast kicks off the 2019 growing season April 25 with a discussion on early-season weed control with Christy Sprague.
The dodder you never wanted

Published on September 10, 2018
Dodder, a parasitic vining plant, is an uncommon greenhouse weed that survives off plants and can rapidly grow infesting multiple plants to whole crops.
2018 Weed Tour Book

Published on June 27, 2018
2018 MSU Weed Tour Book from the June 27th Weed's Day
Cover Crop Termination bulletin

Published on March 30, 2018
Developing a termination strategy for cover crops is an essential part of the planning process to ensure there is no interference with the planting or management of the subsequent cash crop.

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Upcoming Weed Events

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2021 MSU Weed Control Guide for Field Crops Update