Getting Rid Of Weeds
Through Integrated Weed Management

We are a scientist-led network coordinating research to help farmers across the U.S. fight herbicide-resistance with a greater diversity of weed control strategies to complement chemical use.

GROW aims to provide information on tools such as cover crops, increased crop competition, harvest weed seed control, and more.

Recent GROW News & Research Updates

Forged in the Field: Student Weed Contests Test and Train Future Scientists

  October 7, 2025   Grow IWM
Listen to this article above! It’s barely 8:00 in the morning when the crowd scatters outside the University of Arkansas...
  Grow News      Industry News      Herbicide Management   

Killing Giant Ragweed Just Got Harder for Some Wisconsin Farmers

  September 30, 2025   Grow IWM
Listen to this article above! This article is reprinted with permission from the University of Illinois Urbana-Champaign. When...
  Grow News      Industry News      Herbicide Resistant Weeds      Herbicide Resistance   

Could We Shock Cover Crops for Termination?

  September 23, 2025   Grow IWM
Listen to this article above! Who said that electrocution is just for weeds? “If these electrical weeders can do a good job of...
  Grow News      Mechanical Weed Control      Cover Crops      Herbicide Resistance      Weed Electrocution   

Cover Crops for Weed Management: Get the Latest & Greatest from GROW

  September 16, 2025   Grow IWM
Listen to this article above! As cover crop use grows more common, so does research seeking to answer important questions about...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

How Drones Could Target Late-Season Weed Escapes in Rice

  September 9, 2025   Grow IWM
Listen to this article above! Tired of mucking through flooded rice paddies to control escaped weeds? Another weed-control...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Precision Weed Management   

Could Cereal Rye Be the Next Johnsongrass or Kudzu?

  September 2, 2025   Grow IWM
Listen to this article above! It’s easy to understand why cereal rye makes up 44% of all U.S. cover crop acreage. It produces...
  Grow News      Cover Crops      Herbicide Resistance   

Take the Guesswork Out of Precision Spray Tech with this ROI Calculator

  August 26, 2025   Grow IWM
Listen to this article above! Are you interested in precision spray technology, but not sure that you can afford it? Well,...
  Grow News      Herbicide Resistance      Precision Weed Management      Herbicide Management   

Two Passes, One Win: How Herbicide Sequence & Timing Affect Weed Control in Enlist E3 Soybeans

  August 19, 2025   Grow IWM
Listen to this article above! When is applying a postemergence herbicide too postemergent? Researchers at the University of...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Herbicide Management   

Research Unveils the Secret Life of Hairy Vetch — And How to Change It

  August 12, 2025   Grow IWM
Listen to this article above! Hairy vetch has a reputation as a moody cover crop with commitment issues. Some farmers shy away...
  Grow News      Cover Crops   

Fight Weeds with Time: Delay Winter Wheat Planting to Manage Cheat and Downy Brome 

  August 5, 2025   Grow IWM
Listen to this article above! Cheat and cheatgrass ring true to their names – they sneak into wheatfields, grow alongside the...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Herbicide Management   

Farmer Forum Recap: Weed Electrocution in the Field

  July 29, 2025   Grow IWM
Listen to this article above! In this GROW Farmer Forum, Texas A&M graduate student Ryan Hamberg and a panel of farmers...
  Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Weed Electrocution   

Underground Army: How Soil Invertebrates May Help Farmers Manage Weeds

  July 22, 2025   Grow IWM
Listen to this article above! Could those creepy crawlies underneath the soil actually be helping farmers battle weeds? New...
  Grow News      Integrated Weed Management Innovations      Prevention   

Could We Shock Cover Crops for Termination?

  September 23, 2025   Grow IWM
Listen to this article above! Who said that electrocution is just for weeds? “If these electrical weeders can do a good job of...
  Grow News      Mechanical Weed Control      Cover Crops      Herbicide Resistance      Weed Electrocution   

Cover Crops for Weed Management: Get the Latest & Greatest from GROW

  September 16, 2025   Grow IWM
Listen to this article above! As cover crop use grows more common, so does research seeking to answer important questions about...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

Could Cereal Rye Be the Next Johnsongrass or Kudzu?

  September 2, 2025   Grow IWM
Listen to this article above! It’s easy to understand why cereal rye makes up 44% of all U.S. cover crop acreage. It produces...
  Grow News      Cover Crops      Herbicide Resistance   

Research Unveils the Secret Life of Hairy Vetch — And How to Change It

  August 12, 2025   Grow IWM
Listen to this article above! Hairy vetch has a reputation as a moody cover crop with commitment issues. Some farmers shy away...
  Grow News      Cover Crops   

Underground Warfare: Cereal Rye Cover Crop Suppresses Johnsongrass Rhizomes

  July 8, 2025   Grow IWM
Listen to this article above! A mystery was cropping up in southern Texas. “We’ve done a lot of research on cover crops, and...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

Mix Cereal Rye with Hairy Vetch to Cash In on Cover Crop Benefits

  April 29, 2025   Grow IWM
In recent years, farmers in Virginia have found a way to suppress weeds, fix nitrogen, and earn an extra buck by mixing cereal...
  Grow News      Integrated Weed Management Innovations      Cover Crops   

A Handheld Extension Agent? GROW Researchers Put ExtensionBot to the Test

  April 15, 2025   Grow IWM
AI is sowing new possibilities in agriculture, from precision herbicide applications to mapping weeds and cover crops in fields....
  Grow News      Industry News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Cover Crops      DIGITAL AGRICULTURE      Herbicide Management   

Insecticides May Contribute to Bigger Problems with Certain Weeds

  April 10, 2025   Grow IWM
This article is reprinted with permission from Penn State University. Insecticides may help growers hoping to protect their crops...
  Herbicide Resistant Weeds      News From Other Sources      Cover Crops      Prevention      Herbicide Management   

The Lowdown on Roller Crimpers

  March 27, 2025   Grow IWM
Editor’s Note: This video was first published on April 2, 2024 Roller crimpers can be a valuable tool for terminating cover...
  Grow News      Integrated Weed Management Innovations      Mechanical Weed Control      Cover Crops   

Farmer Forum Recap: Cover Crop Termination

  March 20, 2025   Grow IWM
Editor’s Note: This Farmer Forum was recorded in March 2023. In this GROW Farmer Forum, a panel of farmers from Wisconsin,...
  Grow News      Cover Crops      featured   

Squash Pigweeds With These Cover Crop Management Strategies

  March 18, 2025   Grow IWM
Palmer amaranth, waterhemp, smooth and redroot pigweed – these weeds haunt farmers nationwide, causing crop yield losses as...
  Grow News      Herbicide Resistant Weeds      Cover Crops   

A Look at Planter Adjustments for Planting into Cover Crops

  March 13, 2025   Grow IWM
Editor’s Note: This article was first published on March 26, 2024.  When adjusting your planter to run through...
  Grow News      Integrated Weed Management Innovations      Cover Crops   

Forged in the Field: Student Weed Contests Test and Train Future Scientists

  October 7, 2025   Grow IWM
Listen to this article above! It’s barely 8:00 in the morning when the crowd scatters outside the University of Arkansas...
  Grow News      Industry News      Herbicide Management   

Killing Giant Ragweed Just Got Harder for Some Wisconsin Farmers

  September 30, 2025   Grow IWM
Listen to this article above! This article is reprinted with permission from the University of Illinois Urbana-Champaign. When...
  Grow News      Industry News      Herbicide Resistant Weeds      Herbicide Resistance   

Could We Shock Cover Crops for Termination?

  September 23, 2025   Grow IWM
Listen to this article above! Who said that electrocution is just for weeds? “If these electrical weeders can do a good job of...
  Grow News      Mechanical Weed Control      Cover Crops      Herbicide Resistance      Weed Electrocution   

Cover Crops for Weed Management: Get the Latest & Greatest from GROW

  September 16, 2025   Grow IWM
Listen to this article above! As cover crop use grows more common, so does research seeking to answer important questions about...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

How Drones Could Target Late-Season Weed Escapes in Rice

  September 9, 2025   Grow IWM
Listen to this article above! Tired of mucking through flooded rice paddies to control escaped weeds? Another weed-control...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Precision Weed Management   

Could Cereal Rye Be the Next Johnsongrass or Kudzu?

  September 2, 2025   Grow IWM
Listen to this article above! It’s easy to understand why cereal rye makes up 44% of all U.S. cover crop acreage. It produces...
  Grow News      Cover Crops      Herbicide Resistance   

Take the Guesswork Out of Precision Spray Tech with this ROI Calculator

  August 26, 2025   Grow IWM
Listen to this article above! Are you interested in precision spray technology, but not sure that you can afford it? Well,...
  Grow News      Herbicide Resistance      Precision Weed Management      Herbicide Management   

Two Passes, One Win: How Herbicide Sequence & Timing Affect Weed Control in Enlist E3 Soybeans

  August 19, 2025   Grow IWM
Listen to this article above! When is applying a postemergence herbicide too postemergent? Researchers at the University of...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Herbicide Management   

Research Unveils the Secret Life of Hairy Vetch — And How to Change It

  August 12, 2025   Grow IWM
Listen to this article above! Hairy vetch has a reputation as a moody cover crop with commitment issues. Some farmers shy away...
  Grow News      Cover Crops   

Fight Weeds with Time: Delay Winter Wheat Planting to Manage Cheat and Downy Brome 

  August 5, 2025   Grow IWM
Listen to this article above! Cheat and cheatgrass ring true to their names – they sneak into wheatfields, grow alongside the...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Herbicide Management   

Underground Army: How Soil Invertebrates May Help Farmers Manage Weeds

  July 22, 2025   Grow IWM
Listen to this article above! Could those creepy crawlies underneath the soil actually be helping farmers battle weeds? New...
  Grow News      Integrated Weed Management Innovations      Prevention   

Unwanted Volunteers: How Much Corn Are You Losing at Harvest? 

  July 15, 2025   Grow IWM
Listen to this article above! Volunteer corn is the surprise guest of the growing season, sprouting where it’s unwanted,...
  Herbicide Management      Grow News      Prevention      Mechanical Weed Control      Integrated Weed Management Innovations   

Killing Giant Ragweed Just Got Harder for Some Wisconsin Farmers

  September 30, 2025   Grow IWM
Listen to this article above! This article is reprinted with permission from the University of Illinois Urbana-Champaign. When...
  Grow News      Industry News      Herbicide Resistant Weeds      Herbicide Resistance   

Could We Shock Cover Crops for Termination?

  September 23, 2025   Grow IWM
Listen to this article above! Who said that electrocution is just for weeds? “If these electrical weeders can do a good job of...
  Grow News      Mechanical Weed Control      Cover Crops      Herbicide Resistance      Weed Electrocution   

Cover Crops for Weed Management: Get the Latest & Greatest from GROW

  September 16, 2025   Grow IWM
Listen to this article above! As cover crop use grows more common, so does research seeking to answer important questions about...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

How Drones Could Target Late-Season Weed Escapes in Rice

  September 9, 2025   Grow IWM
Listen to this article above! Tired of mucking through flooded rice paddies to control escaped weeds? Another weed-control...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Precision Weed Management   

Could Cereal Rye Be the Next Johnsongrass or Kudzu?

  September 2, 2025   Grow IWM
Listen to this article above! It’s easy to understand why cereal rye makes up 44% of all U.S. cover crop acreage. It produces...
  Grow News      Cover Crops      Herbicide Resistance   

Take the Guesswork Out of Precision Spray Tech with this ROI Calculator

  August 26, 2025   Grow IWM
Listen to this article above! Are you interested in precision spray technology, but not sure that you can afford it? Well,...
  Grow News      Herbicide Resistance      Precision Weed Management      Herbicide Management   

Two Passes, One Win: How Herbicide Sequence & Timing Affect Weed Control in Enlist E3 Soybeans

  August 19, 2025   Grow IWM
Listen to this article above! When is applying a postemergence herbicide too postemergent? Researchers at the University of...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Herbicide Management   

Fight Weeds with Time: Delay Winter Wheat Planting to Manage Cheat and Downy Brome 

  August 5, 2025   Grow IWM
Listen to this article above! Cheat and cheatgrass ring true to their names – they sneak into wheatfields, grow alongside the...
  Grow News      Herbicide Resistant Weeds      Herbicide Resistance      Herbicide Management   

Farmer Forum Recap: Weed Electrocution in the Field

  July 29, 2025   Grow IWM
Listen to this article above! In this GROW Farmer Forum, Texas A&M graduate student Ryan Hamberg and a panel of farmers...
  Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Weed Electrocution   

Join a GROW Farmer Forum on Weed Electrocution in the Field

  July 10, 2025   Grow IWM
Listen to this article above! GROW will host a Farmer Forum on Wednesday, July 23, 2025, at 11 a.m. ET. The forum’s farmer...
  Grow News      Weed Electrocution      Mechanical Weed Control      Herbicide Resistant Weeds      Integrated Weed Management Innovations   

Underground Warfare: Cereal Rye Cover Crop Suppresses Johnsongrass Rhizomes

  July 8, 2025   Grow IWM
Listen to this article above! A mystery was cropping up in southern Texas. “We’ve done a lot of research on cover crops, and...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

Join a GROW Farmer Forum on Weed Electrocution in the Field

  June 30, 2025   Grow IWM
Listen to this article above! GROW will host a Farmer Forum on Wednesday, July 23, 2025, at 11 a.m. ET. The forum’s farmer...
  Grow News      Weed Electrocution      Mechanical Weed Control      Herbicide Resistant Weeds      Integrated Weed Management Innovations   

This Harvest Device Catches Corn Kernels and Weed Seeds 

  June 24, 2025   Grow IWM
Listen to this article above! Harvest weed seed control has proven a successful way to reduce your weed seedbank in small-grain...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Mechanical Weed Control      Harvest Weed Seed Management   

Weed Science Field Days: What’s In It For Me? 

  June 17, 2025   Grow IWM
Listen to this article above! It happens like clockwork almost every year, starting in June. Wagons bounce over field ruts,...
  Grow News      Industry News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Weed Electrocution      Precision Weed Management   

Can Chaff Lining Cut Costs and Corral Weeds in the Canadian Prairies?

  June 10, 2025   Grow IWM
It can be tricky to find weed management methods that lower herbicide inputs but still work for your production system if...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Mechanical Weed Control      Harvest Weed Seed Management   

A Handheld Extension Agent? GROW Researchers Put ExtensionBot to the Test

  April 15, 2025   Grow IWM
AI is sowing new possibilities in agriculture, from precision herbicide applications to mapping weeds and cover crops in fields....
  Grow News      Industry News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Cover Crops      DIGITAL AGRICULTURE      Herbicide Management   

Seed Impact Mill Pulverizes Problematic Waterhemp in New Study

  February 25, 2025   Grow IWM
Recently-published research has reinforced that “milling around” with seed impact mills can help keep escaped waterhemp from...
  Grow News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management      Herbicide Management   

Weed Management Planner: Order Your Free Prints Now! 

  February 18, 2025   Grow IWM
GROW’s Weed Management Planner is many things – color-coded, comprehensive, and packed with information!  But we admit,...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Mechanical Weed Control      Cover Crops      Fact Sheets      Herbicide Management   

Extension and Farmers Greet Weed Control Option with ‘G’day’

  November 19, 2024   Grow IWM
This article is reprinted with permission from University of Minnesota Extension. In growing crops, much hinges on what happens...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management   

GROW Releases New Herbicide Resistance Resource for the Industry

  October 15, 2024   Grow IWM
As herbicide resistance spreads, so must education on what it is and how to manage it. That’s the goal behind GROW’s newest...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops      Prevention      Weed Electrocution      Precision Weed Management      Herbicide Management   

Narrow Windrow Burning for Weed Seed Control is Risky Business

  September 3, 2024   Grow IWM
Sometimes when a plan looks good on paper, it doesn’t necessarily mean its execution is the best idea. Weed scientists are...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Mechanical Weed Control      Harvest Weed Seed Management   

Learn When Weeds Shed Their Seeds (And Why It Matters!)

  August 13, 2024   Grow IWM
A weed without seeds at harvest time is a lost cause for harvest weed seed control. That’s why GROW researchers from 14...
  Grow News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management      Fact Sheets   

A Weed Seed Killing Machine: Testing the integrated Harrington Seed Destructor

  August 6, 2024   Grow IWM
With a rise in herbicide-resistant weeds such as Palmer amaranth and common ragweed escaping in-season control methods, weed...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management   

Learn from the Best: GROW Farmer Case Studies 

  July 22, 2024   Grow IWM
Every good ag researcher knows the power of an innovative farmer. Take, for example, the no-till movement. As the Dust Bowl raged...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Cover Crops      featured      Weed Electrocution   

No Seeds. No Weeds.

For over 50 years, herbicides have been a highly effective method to control weeds and protect crop yields. Herbicides have supported the widespread use of no-till and limited cultivation for weed control, improving soil health. However, overreliance on a few key herbicides has prompted a growing epidemic of herbicide-resistant weeds.

For some farmers, herbicides alone just aren’t getting the job done anymore.

Integrated Weed Management (IWM) is the answer.

Prevention Cultural Chemical Biological Mechanical IWM

What is Integrated Weed Management?

Integrated weed management (IWM) is a system that layers multiple weed control methods to suppress and manage weeds across a growing season, by targeting weeds and the seedbank in different ways and at different stages of development. The result is a robust weed management program that doesn’t rely on a single mode of action or management tactic.  IWM techniques include:

In the Fields

What Are Your Problem Weeds?

Yellow Nutsedge
Jimsonweed
Velvetleaf
Foxtail (Giant)
Broadleaf Signalgrass
Redroot & Smooth Pigweed
Texas Millet (Panicum)
Canada Thistle
Pokeweed (Common)
Rush Skeletonweed
Russian Thistle