Getting Rid Of Weeds
Through Integrated Weed Management
We are a publicly led network coordinating research and outreach, providing science-based information and decision support tools to make agriculture more sustainable and precise. We work to develop integrated weed management solutions that are practical and adoptable.
Recent IWM News
How to Make Cover Crops Work in Montana
Water is a precious commodity in Montana cropping and livestock systems, where annual rainfall amounts can range from 6 to 22...
Grow News
Industry News
News From Other Sources
Cover Crops
New Resource Alert: The Weed Management Planner
Creating a better weed control strategy just got a little easier! GROW’s newest resource, the Weed Management Planner, is...
Integrated Weed Management Innovations
Harvest Weed Seed Management
Herbicide Resistant Weeds
Prevention
Mechanical Weed Control
Cover Crops
Grow News
Harvest Weed Seed Control
Farmer Forum Recap: Using Seed Impact Mills for Weed Control
In GROW’s last Farmer Forum of 2023, a panel of farmers from Texas and Washington shared their experiences using seed impact...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
New Penn State Guide Tackles Weed Control in Organic No-Till Soybean Systems
Imagine a weed management system with no access to herbicides and no conventional tillage implements. Intimidated? Welcome to the...
Weed Electrocution
Industry News
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
Cover Crops
Making Chaff Lining Work on Shepherd Grain Farms
John Shepherd is no stranger to integrated weed management. The Virginia farmer already uses cover crops and herbicides to battle...
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Eastern Shore Farmer Tries Chaff Lining to Defeat Weeds
Third time is usually the charm, but it only took two tries for farmer Jarrett Sturgis to declare chaff lining a likely success...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Harvest Weed Seed Management
Join a GROW Farmer Forum on Using Seed Impact Mills for Weed Control
GROW will be hosting a Farmer Forum on December 4th, 2023, at 1 p.m. ET. Listen in as three U.S. farmers explain why they decided...
Harvest Weed Seed Management
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Narrow Soybean Rows: How to Manage Both Weeds & White Mold
When it comes to choosing soybean row spacing, some farmers feel torn between opting for narrow rows and better weed control or...
News From Other Sources
Prevention
Precision Weed Management
Industry News
Herbicide Resistant Weeds
Cheatgrass (Downy Brome) Management in the Western U.S.
Downy brome is a weed so famous for stealing wheat yields that the pioneers dubbed it “cheatgrass,” when they first...
News From Other Sources
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Hiring Announcement: Precision Sustainable Agriculture
GROW’s partner organization, Precision Sustainable Agriculture (PSA), is hiring! PSA is a network of scientists and digital...
Precision Weed Management
Grow News
Industry News
DIGITAL AGRICULTURE
The Latest on Herbicide Resistance & Weed Management in Montana
GROW recently caught up with Montana State University weed scientists, Dr. Tim Seipel and Dr. Lovreet Shergill, for a deep dive...
Industry News
Integrated Weed Management Innovations
Mechanical Weed Control
Cover Crops
Herbicide Resistant Weeds
Harvest Weed Seed Management
Scout for Palmer Amaranth and Waterhemp to Prevent Spreading Seeds with the Combine
The following is reprinted from Penn State Extension. Due to dry conditions early in the production season, we are seeing more...
Harvest Weed Seed Management
Industry News
Prevention
Harvest Weed Seed Control
Herbicide Resistant Weeds
Mechanical Weed Control
How to Make Cover Crops Work in Montana
Water is a precious commodity in Montana cropping and livestock systems, where annual rainfall amounts can range from 6 to 22...
Grow News
Industry News
News From Other Sources
Cover Crops
New Resource Alert: The Weed Management Planner
Creating a better weed control strategy just got a little easier! GROW’s newest resource, the Weed Management Planner, is...
Integrated Weed Management Innovations
Harvest Weed Seed Management
Herbicide Resistant Weeds
Prevention
Mechanical Weed Control
Cover Crops
Grow News
Harvest Weed Seed Control
New Penn State Guide Tackles Weed Control in Organic No-Till Soybean Systems
Imagine a weed management system with no access to herbicides and no conventional tillage implements. Intimidated? Welcome to the...
Weed Electrocution
Industry News
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
Cover Crops
The Latest on Herbicide Resistance & Weed Management in Montana
GROW recently caught up with Montana State University weed scientists, Dr. Tim Seipel and Dr. Lovreet Shergill, for a deep dive...
Industry News
Integrated Weed Management Innovations
Mechanical Weed Control
Cover Crops
Herbicide Resistant Weeds
Harvest Weed Seed Management
Interseeding Cover Crops in Corn: A Research Deep Dive
Interseeding cover crops into standing corn can help growers avoid the hustle and delays of harvest season and give their covers...
Cover Crops
Industry News
Integrated Weed Management Innovations
Herbicide Resistant Weeds
EPA Tours Maryland Crops & Weeds Research
In its continuing quest to keep regulators connected with current farming practices, the Weed Science Society of America (WSSA),...
Mechanical Weed Control
News From Other Sources
Cover Crops
Grow News
featured
Herbicide Resistant Weeds
Weed Control Remains a Primary Goal for Cover Crop Users
The numbers are in, and weed control remains one of farmers’ primary – and most successful – goals for adding cover crops...
Cover Crops
Industry News
Integrated Weed Management Innovations
Herbicide Resistant Weeds
The Hunt to Learn How Much Herbicide is Intercepted by a Cover Crop
A thick stand of cover crops can help suppress weeds, but it can also intercept residual herbicides sprayed in the spring to...
Grow News
Integrated Weed Management Innovations
Cover Crops
Should You Adjust Cover Crop Seeding Rates as Planting Dates Change?
Cover crop seeding is often the last box to check in the fall for farmers, and planting windows don’t always cooperate. ...
Cover Crops
Prevention
Industry News
Integrated Weed Management Innovations
Planting Fall Covers? Know Your Herbicide Carryover Risks.
It’s fall cover crop seeding time, and with large swaths of the Midwest facing droughty soils, herbicide carryover injury could...
featured
Grow News
Cover Crops
Farmer Forum Recap: Cover Crop Seeding
In GROW’s latest Farmer Forum, a panel of farmers from Delaware, New York and Texas shared their experiences with all aspects...
Cover Crops
Prevention
Grow News
Integrated Weed Management Innovations
The Cover Crop That Never Dies: Scientists Explore Living Mulch
Imagine a cover crop that never stops growing — nestled between the rows of a cash crop, continuously suppressing weeds and...
Industry News
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Cover Crops
Prevention
How to Make Cover Crops Work in Montana
Water is a precious commodity in Montana cropping and livestock systems, where annual rainfall amounts can range from 6 to 22...
Grow News
Industry News
News From Other Sources
Cover Crops
New Resource Alert: The Weed Management Planner
Creating a better weed control strategy just got a little easier! GROW’s newest resource, the Weed Management Planner, is...
Integrated Weed Management Innovations
Harvest Weed Seed Management
Herbicide Resistant Weeds
Prevention
Mechanical Weed Control
Cover Crops
Grow News
Harvest Weed Seed Control
Farmer Forum Recap: Using Seed Impact Mills for Weed Control
In GROW’s last Farmer Forum of 2023, a panel of farmers from Texas and Washington shared their experiences using seed impact...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
Making Chaff Lining Work on Shepherd Grain Farms
John Shepherd is no stranger to integrated weed management. The Virginia farmer already uses cover crops and herbicides to battle...
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Eastern Shore Farmer Tries Chaff Lining to Defeat Weeds
Third time is usually the charm, but it only took two tries for farmer Jarrett Sturgis to declare chaff lining a likely success...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Harvest Weed Seed Management
Join a GROW Farmer Forum on Using Seed Impact Mills for Weed Control
GROW will be hosting a Farmer Forum on December 4th, 2023, at 1 p.m. ET. Listen in as three U.S. farmers explain why they decided...
Harvest Weed Seed Management
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Cheatgrass (Downy Brome) Management in the Western U.S.
Downy brome is a weed so famous for stealing wheat yields that the pioneers dubbed it “cheatgrass,” when they first...
News From Other Sources
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Hiring Announcement: Precision Sustainable Agriculture
GROW’s partner organization, Precision Sustainable Agriculture (PSA), is hiring! PSA is a network of scientists and digital...
Precision Weed Management
Grow News
Industry News
DIGITAL AGRICULTURE
EPA Tours Maryland Crops & Weeds Research
In its continuing quest to keep regulators connected with current farming practices, the Weed Science Society of America (WSSA),...
Mechanical Weed Control
News From Other Sources
Cover Crops
Grow News
featured
Herbicide Resistant Weeds
HWSC in the Pacific Northwest: Greene Ridge Farms Tackles Tough Weeds with Seed Impact Mill
Mark Greene’s fields only see 10 to 12 inches of rain on his farm in Asotin County, a flat, semiarid section of the Palouse...
Mechanical Weed Control
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
A Weed Seed Killing Machine: Testing the Redekop Seed Control Unit
Killing weed seeds is dirty work, but with herbicide-resistant weeds on the rise, someone has to do it! That’s why Virginia...
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
HWSC in the Pacific Northwest: Simon Crawford’s First Year with a Seed Impact Mill
There’s a new tool at work in the fields of JIG Farms – a seed impact mill. Owned and operated by Simon Crawford, JIG...
featured
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
New Resource Alert: The Weed Management Planner
Creating a better weed control strategy just got a little easier! GROW’s newest resource, the Weed Management Planner, is...
Integrated Weed Management Innovations
Harvest Weed Seed Management
Herbicide Resistant Weeds
Prevention
Mechanical Weed Control
Cover Crops
Grow News
Harvest Weed Seed Control
Farmer Forum Recap: Using Seed Impact Mills for Weed Control
In GROW’s last Farmer Forum of 2023, a panel of farmers from Texas and Washington shared their experiences using seed impact...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
New Penn State Guide Tackles Weed Control in Organic No-Till Soybean Systems
Imagine a weed management system with no access to herbicides and no conventional tillage implements. Intimidated? Welcome to the...
Weed Electrocution
Industry News
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
Cover Crops
Making Chaff Lining Work on Shepherd Grain Farms
John Shepherd is no stranger to integrated weed management. The Virginia farmer already uses cover crops and herbicides to battle...
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Eastern Shore Farmer Tries Chaff Lining to Defeat Weeds
Third time is usually the charm, but it only took two tries for farmer Jarrett Sturgis to declare chaff lining a likely success...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Harvest Weed Seed Management
Join a GROW Farmer Forum on Using Seed Impact Mills for Weed Control
GROW will be hosting a Farmer Forum on December 4th, 2023, at 1 p.m. ET. Listen in as three U.S. farmers explain why they decided...
Harvest Weed Seed Management
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Narrow Soybean Rows: How to Manage Both Weeds & White Mold
When it comes to choosing soybean row spacing, some farmers feel torn between opting for narrow rows and better weed control or...
News From Other Sources
Prevention
Precision Weed Management
Industry News
Herbicide Resistant Weeds
Cheatgrass (Downy Brome) Management in the Western U.S.
Downy brome is a weed so famous for stealing wheat yields that the pioneers dubbed it “cheatgrass,” when they first...
News From Other Sources
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
The Latest on Herbicide Resistance & Weed Management in Montana
GROW recently caught up with Montana State University weed scientists, Dr. Tim Seipel and Dr. Lovreet Shergill, for a deep dive...
Industry News
Integrated Weed Management Innovations
Mechanical Weed Control
Cover Crops
Herbicide Resistant Weeds
Harvest Weed Seed Management
Scout for Palmer Amaranth and Waterhemp to Prevent Spreading Seeds with the Combine
The following is reprinted from Penn State Extension. Due to dry conditions early in the production season, we are seeing more...
Harvest Weed Seed Management
Industry News
Prevention
Harvest Weed Seed Control
Herbicide Resistant Weeds
Mechanical Weed Control
Interseeding Cover Crops in Corn: A Research Deep Dive
Interseeding cover crops into standing corn can help growers avoid the hustle and delays of harvest season and give their covers...
Cover Crops
Industry News
Integrated Weed Management Innovations
Herbicide Resistant Weeds
EPA Tours Maryland Crops & Weeds Research
In its continuing quest to keep regulators connected with current farming practices, the Weed Science Society of America (WSSA),...
Mechanical Weed Control
News From Other Sources
Cover Crops
Grow News
featured
Herbicide Resistant Weeds
New Resource Alert: The Weed Management Planner
Creating a better weed control strategy just got a little easier! GROW’s newest resource, the Weed Management Planner, is...
Integrated Weed Management Innovations
Harvest Weed Seed Management
Herbicide Resistant Weeds
Prevention
Mechanical Weed Control
Cover Crops
Grow News
Harvest Weed Seed Control
Farmer Forum Recap: Using Seed Impact Mills for Weed Control
In GROW’s last Farmer Forum of 2023, a panel of farmers from Texas and Washington shared their experiences using seed impact...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
Making Chaff Lining Work on Shepherd Grain Farms
John Shepherd is no stranger to integrated weed management. The Virginia farmer already uses cover crops and herbicides to battle...
Herbicide Resistant Weeds
Mechanical Weed Control
Harvest Weed Seed Management
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Eastern Shore Farmer Tries Chaff Lining to Defeat Weeds
Third time is usually the charm, but it only took two tries for farmer Jarrett Sturgis to declare chaff lining a likely success...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Harvest Weed Seed Management
Join a GROW Farmer Forum on Using Seed Impact Mills for Weed Control
GROW will be hosting a Farmer Forum on December 4th, 2023, at 1 p.m. ET. Listen in as three U.S. farmers explain why they decided...
Harvest Weed Seed Management
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Cheatgrass (Downy Brome) Management in the Western U.S.
Downy brome is a weed so famous for stealing wheat yields that the pioneers dubbed it “cheatgrass,” when they first...
News From Other Sources
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Scout for Palmer Amaranth and Waterhemp to Prevent Spreading Seeds with the Combine
The following is reprinted from Penn State Extension. Due to dry conditions early in the production season, we are seeing more...
Harvest Weed Seed Management
Industry News
Prevention
Harvest Weed Seed Control
Herbicide Resistant Weeds
Mechanical Weed Control
HWSC in the Pacific Northwest: Greene Ridge Farms Tackles Tough Weeds with Seed Impact Mill
Mark Greene’s fields only see 10 to 12 inches of rain on his farm in Asotin County, a flat, semiarid section of the Palouse...
Mechanical Weed Control
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
A Weed Seed Killing Machine: Testing the Redekop Seed Control Unit
Killing weed seeds is dirty work, but with herbicide-resistant weeds on the rise, someone has to do it! That’s why Virginia...
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
HWSC in the Pacific Northwest: Simon Crawford’s First Year with a Seed Impact Mill
There’s a new tool at work in the fields of JIG Farms – a seed impact mill. Owned and operated by Simon Crawford, JIG...
featured
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
Mechanical Weed Control
HWSC in the Pacific Northwest: Druffel Farms Adds a Seed Impact Mill to Manage Weeds
Dale and Nick Druffel farm almost 2,800 acres near Uniontown, WA, in the beautiful rolling hills of the Palouse Region. As...
Mechanical Weed Control
Prevention
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
HWSC in the Pacific Northwest: Farmers Lead the Way in this Series
The Palouse region is the heartland of the inland Pacific Northwest (PNW), covering the stunningly beautiful landscapes of...
Harvest Weed Seed Management
Grow News
Industry News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Herbicide Resistant Weeds
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:
In the Fields
What Are Your Problem Weeds?
Wild Oats
Russian Thistle
Rush Skeletonweed
Rettail Fescue
Prickly Lettuce
Mustard Species in Wheat
Mayweed Chamomille
Jointed Goatgrass
Field Bindweed
Feral Rye
Downy Brome
Common Barberry