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

How Does Planting Green Affect Herbicide Use, Soil Moisture & More?

Time to Scout for Weed Escapes

How to Use “Many Little Hammers” to Manage Waterhemp

Narrow Rows & Cover Crops Boost Weed Control in Soybeans

Research Deep Dive: How to Suppress Palmer Amaranth with Cover Crops

New Tool Explores Available Cover Crop Incentive Programs

Scientists Use Drone Cameras to Spot Herbicide-Resistant Plants

How to Identify Grass Weeds Early in the Season

How to Sample Cover Crop Biomass

Why Starting Weed-Free at Planting is So Important
Planting Green: Do Higher Cover Crop Seeding Rates Improve Weed Suppression?

Farmer Forum Recap: Cover Crop Termination

How Does Planting Green Affect Herbicide Use, Soil Moisture & More?

How to Use “Many Little Hammers” to Manage Waterhemp

Narrow Rows & Cover Crops Boost Weed Control in Soybeans

Research Deep Dive: How to Suppress Palmer Amaranth with Cover Crops

New Tool Explores Available Cover Crop Incentive Programs

How to Sample Cover Crop Biomass
Planting Green: Do Higher Cover Crop Seeding Rates Improve Weed Suppression?

Farmer Forum Recap: Cover Crop Termination

Mowing, Zapping, and Outcompeting Weeds: Opportunities and Trade-Offs

Join a GROW Farmer Forum on Cover Crop Termination

How Does Cover Crop Residue Interact with Soil Residual Herbicides?

Four Takeaways on Cover Crops and Weed Control from WSSA

Time to Scout for Weed Escapes

Research Deep Dive: How to Suppress Palmer Amaranth with Cover Crops

How to Identify Grass Weeds Early in the Season

How to Sample Cover Crop Biomass

Why Starting Weed-Free at Planting is So Important

Farmer Forum Recap: Cover Crop Termination

Spring is Here. Time to Find Your Favorite Weed ID Tool!

Updates on Harvest Weed Seed Control from WSSA Members Across the Country

Join a GROW Farmer Forum on Cover Crop Termination

GROW is Hiring a Post-Doctoral Researcher

How a National Image Repository Can Transform Agriculture

The Ag Image Repository: A First Step in Accessible Precision Ag

Time to Scout for Weed Escapes

How to Use “Many Little Hammers” to Manage Waterhemp

Narrow Rows & Cover Crops Boost Weed Control in Soybeans

Research Deep Dive: How to Suppress Palmer Amaranth with Cover Crops

Scientists Use Drone Cameras to Spot Herbicide-Resistant Plants

How to Identify Grass Weeds Early in the Season

Why Starting Weed-Free at Planting is So Important

Join a GROW Farmer Forum on Cover Crop Termination

How Does Cover Crop Residue Interact with Soil Residual Herbicides?

Three Weird Ways Weed Seeds Can Travel

Four Takeaways on Cover Crops and Weed Control from WSSA

How to Manage Weeds in the Face of Regulation and Resistance

Updates on Harvest Weed Seed Control from WSSA Members Across the Country

How to Manage Weeds in the Face of Regulation and Resistance

Are You a Fan of DIY Weed Control? Try Chaff Lining.

The Australian Weed Control Revolution

Farmer Forum Recap: Combine Set-Up for Threshing Green Material

The Fate of Weed Seeds: Where Do They Go in a Combine?

Farmer Forum Recap: How to Optimize Threshing Settings for Harvest Weed Seed Control

Does Harvest Weed Seed Control Work in Rice Fields?

Texas Rice Farmer Tries Out iHSD to Halt Weed Seedbank

Farmer Forum Recap: How to Set Up Combine Headers for Weed Seed Capture

Meet Ray Harrington, Founder of the Harrington Seed Destructor

Can A Corn Header Capture Weed Seeds?

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 wide-spread use of no-till and limited cultivation for weed control, improving soil health. However, over reliance on a few key herbicides has caused the development of particularly problematic 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) combines various methods to reduce or eliminate the effect of weeds on crop production over time, using a combination of practices that are most effective for solving specific weed issues. Techniques include: