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

Keep These Tips in Mind When Using Target Sprayers

Heading to the Field to Scout? Take Us With You!

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

Insecticides May Contribute to Bigger Problems with Certain Weeds

Rising Herbicide Resistance: Researchers Find That No State or Weed is Immune

Take Action Has a New Home on GROW Website

The Lowdown on Roller Crimpers

Listen In: A Look at Targeted Tillage with the Weed Chipper

Farmer Forum Recap: Cover Crop Termination

Squash Pigweeds With These Cover Crop Management Strategies

A Look at Planter Adjustments for Planting into Cover Crops

How to Manage Cereal Rye in the Upper Midwest for Weed Suppression and Max Yields

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

Insecticides May Contribute to Bigger Problems with Certain Weeds

The Lowdown on Roller Crimpers

Farmer Forum Recap: Cover Crop Termination

Squash Pigweeds With These Cover Crop Management Strategies

A Look at Planter Adjustments for Planting into Cover Crops

How to Manage Cereal Rye in the Upper Midwest for Weed Suppression and Max Yields

All-of-the-Above Management: Weed Control in Organic Grain Production in the Pacific Northwest

Weed Management Planner: Order Your Free Prints Now!

Farming Peanuts with Cover Crops in Virginia

New Technology Aims to Map Cereal Rye Cover Crop Biomass

Penn State Guide Details Interseeding Cover Crops in Corn Production

Keep These Tips in Mind When Using Target Sprayers

Heading to the Field to Scout? Take Us With You!

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

Rising Herbicide Resistance: Researchers Find That No State or Weed is Immune

The Lowdown on Roller Crimpers

Farmer Forum Recap: Cover Crop Termination

Squash Pigweeds With These Cover Crop Management Strategies

A Look at Planter Adjustments for Planting into Cover Crops

How to Manage Cereal Rye in the Upper Midwest for Weed Suppression and Max Yields

Seed Impact Mill Pulverizes Problematic Waterhemp in New Study

Weed Management Planner: Order Your Free Prints Now!

Farm Tour in Wisconsin Seeks to Highlights ESA Impacts to Ag

Keep These Tips in Mind When Using Target Sprayers

Heading to the Field to Scout? Take Us With You!

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

Insecticides May Contribute to Bigger Problems with Certain Weeds

Rising Herbicide Resistance: Researchers Find That No State or Weed is Immune

Take Action Has a New Home on GROW Website

Listen In: A Look at Targeted Tillage with the Weed Chipper

Squash Pigweeds With These Cover Crop Management Strategies

How to Manage Cereal Rye in the Upper Midwest for Weed Suppression and Max Yields

All-of-the-Above Management: Weed Control in Organic Grain Production in the Pacific Northwest

Seed Impact Mill Pulverizes Problematic Waterhemp in New Study

Farming Peanuts with Cover Crops in Virginia

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

Seed Impact Mill Pulverizes Problematic Waterhemp in New Study

Weed Management Planner: Order Your Free Prints Now!

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

GROW Releases New Herbicide Resistance Resource for the Industry

Narrow Windrow Burning for Weed Seed Control is Risky Business

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

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

Learn from the Best: GROW Farmer Case Studies

Can Seed Impact Mills Kill Weed Seeds in Cotton?

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

Can Weeds Adapt to Beat Harvest Weed Seed Control?

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:
