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
Research Suggests Seed Impact Mills Could Clean Up Cotton Fields
When Sarah Chu began researching the efficacy of seed impact mills in cotton, she knew it might be an uphill battle. Seed impact...
Harvest Weed Seed Management
Mechanical Weed Control
Grow News
Harvest Weed Seed Control
WSSA and NAICC Provide On-Farm Learning for Agency Representatives
WESTMINSTER, Colo., Oct. 7, 2025 — The Weed Science Society of America (WSSA) recently collaborated with the National...
Herbicide Management
Industry News
News From Other Sources
Get Your Ounce of (Weed Seed) Prevention This Fall
As the growing season winds down, it can be tempting to take your foot off the gas and coast into winter, leaving weed management...
Herbicide Resistant Weeds
Harvest Weed Seed Management
Prevention
Grow News
Forged in the Field: Student Weed Contests Test and Train Future Scientists
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
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?
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
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
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?
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
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
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
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
Could We Shock Cover Crops for Termination?
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
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?
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
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
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
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
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
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
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
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
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
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
Research Suggests Seed Impact Mills Could Clean Up Cotton Fields
When Sarah Chu began researching the efficacy of seed impact mills in cotton, she knew it might be an uphill battle. Seed impact...
Harvest Weed Seed Management
Mechanical Weed Control
Grow News
Harvest Weed Seed Control
Get Your Ounce of (Weed Seed) Prevention This Fall
As the growing season winds down, it can be tempting to take your foot off the gas and coast into winter, leaving weed management...
Herbicide Resistant Weeds
Harvest Weed Seed Management
Prevention
Grow News
Forged in the Field: Student Weed Contests Test and Train Future Scientists
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
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?
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
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
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?
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
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
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
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
Listen to this article above! Cheat and cheatgrass ring true to their names – they sneak into wheatfields, grow alongside the...
Herbicide Management
Grow News
Herbicide Resistance
Herbicide Resistant Weeds
Get Your Ounce of (Weed Seed) Prevention This Fall
As the growing season winds down, it can be tempting to take your foot off the gas and coast into winter, leaving weed management...
Herbicide Resistant Weeds
Harvest Weed Seed Management
Prevention
Grow News
Killing Giant Ragweed Just Got Harder for Some Wisconsin Farmers
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?
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
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
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?
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
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
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
Listen to this article above! Cheat and cheatgrass ring true to their names – they sneak into wheatfields, grow alongside the...
Herbicide Management
Grow News
Herbicide Resistance
Herbicide Resistant Weeds
Farmer Forum Recap: Weed Electrocution in the Field
Listen to this article above! In this GROW Farmer Forum, Texas A&M graduate student Ryan Hamberg and a panel of farmers...
Herbicide Resistant Weeds
Weed Electrocution
Mechanical Weed Control
Integrated Weed Management Innovations
Join a GROW Farmer Forum on Weed Electrocution in the Field
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
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
Research Suggests Seed Impact Mills Could Clean Up Cotton Fields
When Sarah Chu began researching the efficacy of seed impact mills in cotton, she knew it might be an uphill battle. Seed impact...
Harvest Weed Seed Management
Mechanical Weed Control
Grow News
Harvest Weed Seed Control
This Harvest Device Catches Corn Kernels and Weed Seeds
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?
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?
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
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
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!
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’
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
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
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!)
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
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
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.
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:
Weed Management Planner
In the Fields
What Are Your Problem Weeds?
Cocklebur (Common)
Yellow Nutsedge
Jimsonweed
Velvetleaf
Foxtail (Giant)
Broadleaf Signalgrass
Redroot & Smooth Pigweed
Texas Millet (Panicum)
Canada Thistle
Pokeweed (Common)
Cheat
Rush Skeletonweed
