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

Sterile Pollen Technique Shows Promise for Palmer Amaranth Weed Control

  June 11, 2024   Grow IWM
The following is reprinted from Weed Science, a journal of the Weed Science Society of America. Recently published research in...
  Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources      Prevention   

Don’t Miss Last Call for Vining Weed Control in Corn

  June 4, 2024   Grow IWM
As your corn starts to canopy and close ranks this month, make sure those narrowing rows of today aren’t hiding the vines of...
  Grow News      Industry News      Herbicide Resistant Weeds      Prevention   

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

  May 28, 2024   Grow IWM
It happens like clockwork almost every year, starting in June. Wagons bounce over field ruts, filled with people clutching...
  Industry News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Weed Electrocution      Precision Weed Management      Grow News   

Meet GROW’s New Page: The Basics of Herbicide Resistance

  May 21, 2024   Grow IWM
Sometimes, to solve a complex problem like herbicide resistance, you have to go back to the beginning and master the basics....
  Grow News      Herbicide Resistant Weeds      featured      Herbicide Resistance   

Contributors Needed for Weed Mapping Project

  May 14, 2024   Grow IWM
It’s a wild, weedy world out there, but some scientists are hoping to impose a little order on the seasonal chaos of weed...
  Industry News      Herbicide Resistant Weeds      News From Other Sources   

Can Weeds Adapt to Beat Harvest Weed Seed Control?

  May 7, 2024   Grow IWM
Weeds think they’re pretty smart. Since modern agriculture began, weeds have been evolving and lying in wait to grow again –...
  Grow News      Industry News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management   

Study Shines Light on Drill-interseeded Cover Crops in Corn

  May 2, 2024   Grow IWM
The following is reprinted from Weed Science, a journal of the Weed Science Society of America. Recently published research in...
  Industry News      Integrated Weed Management Innovations      News From Other Sources      Cover Crops   

Cover Crops and Residual Herbicides Team Up Against Palmer Amaranth

  April 30, 2024   Grow IWM
Palmer amaranth is famous for dodging herbicide control options, but it appears that a one-two punch of cover crop residue and...
  Grow News      Cover Crops      Herbicide Resistant Weeds      Industry News   

Farmer Forum Recap: Using Drones for Weed Management

  April 23, 2024   Grow IWM
In this GROW Farmer Forum, two panelists led a discussion of the current state of drone scouting, mapping and herbicide...
  Grow News      Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      DIGITAL AGRICULTURE      Precision Weed Management   

New Research on How to Apply Residual Herbicides When Planting Green

  April 16, 2024   Grow IWM
Planting soybeans into a green, living cover crop can require some extra management decisions, such as when to apply those...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

After the Volts: Is Weed Electrocution Safe for the Soil?

  April 9, 2024   Grow IWM
We know getting zapped with high voltages of electricity can be a deadly affair for weeds, which has made weed electrocution a...
  Industry News      Weed Electrocution      News From Other Sources      Mechanical Weed Control      Integrated Weed Management Innovations   

Meet Science for Success! 

  April 5, 2024   Grow IWM
Farmers successfully grow millions of acres of soybeans every year, but we know they are always looking for ways to better...
  Grow News      Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources   

Study Shines Light on Drill-interseeded Cover Crops in Corn

  May 2, 2024   Grow IWM
The following is reprinted from Weed Science, a journal of the Weed Science Society of America. Recently published research in...
  Industry News      Integrated Weed Management Innovations      News From Other Sources      Cover Crops   

Cover Crops and Residual Herbicides Team Up Against Palmer Amaranth

  April 30, 2024   Grow IWM
Palmer amaranth is famous for dodging herbicide control options, but it appears that a one-two punch of cover crop residue and...
  Grow News      Cover Crops      Herbicide Resistant Weeds      Industry News   

New Research on How to Apply Residual Herbicides When Planting Green

  April 16, 2024   Grow IWM
Planting soybeans into a green, living cover crop can require some extra management decisions, such as when to apply those...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

The Lowdown on Roller Crimpers

  April 2, 2024   Grow IWM
Roller crimpers can be a valuable tool for terminating cover crops or simply managing cover crop residue, especially when...
  Grow News      Integrated Weed Management Innovations      Cover Crops   

A Look at Planter Adjustments for Planting into Cover Crops

  March 26, 2024   Grow IWM
 When adjusting your planter to run through high-residue cover crops, Trey Hill has some advice: Don’t get too...
  Grow News      Integrated Weed Management Innovations      Cover Crops   

Allow Us to Introduce Ourselves (Again!)

  March 14, 2024   Grow IWM
Like the science we study and share, GROW is evolving and expanding quickly, and we decided it was time for our website to...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops      DIGITAL AGRICULTURE      Precision Weed Management   

Cover Crops and Weed Control in the Southeast: A Battle for Resources

  February 13, 2024   Grow IWM
You can’t keep a Southern weed down for long.  That’s the takeaway from a recently published meta-analysis of cover...
  Grow News      Industry News      Herbicide Resistant Weeds      Cover Crops      Prevention   

Cover Crops for Weed Control: The Keys for Success

  January 23, 2024   Grow IWM
Just like any other crop, winter weeds can outcompete a cover crop if that cover crop has poor germination or establishment. So...
  Industry News      Herbicide Resistant Weeds      News From Other Sources      Cover Crops      Prevention   

The Hunt to Make Cereal Rye More Competitive Above & Below Ground

  January 16, 2024   Grow IWM
There are a lot of ways to keep a weed seed down with cover crops. Above ground, you can rob them of the light, temperatures,...
  Grow News      Industry News      Herbicide Resistant Weeds      News From Other Sources      Cover Crops      Prevention   

How to Make Cover Crops Work in Montana

  January 2, 2024   Grow IWM
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

  December 19, 2023   Grow IWM
Creating a better weed control strategy just got a little easier! GROW’s newest resource, the Weed Management Planner, is...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Cover Crops      Harvest Weed Seed Management      Prevention   

New Penn State Guide Tackles Weed Control in Organic No-Till Soybean Systems

  December 5, 2023   Grow IWM
Imagine a weed management system with no access to herbicides and no conventional tillage implements. Intimidated? Welcome to the...
  Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Cover Crops      Weed Electrocution   

Don’t Miss Last Call for Vining Weed Control in Corn

  June 4, 2024   Grow IWM
As your corn starts to canopy and close ranks this month, make sure those narrowing rows of today aren’t hiding the vines of...
  Grow News      Industry News      Herbicide Resistant Weeds      Prevention   

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

  May 28, 2024   Grow IWM
It happens like clockwork almost every year, starting in June. Wagons bounce over field ruts, filled with people clutching...
  Industry News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Weed Electrocution      Precision Weed Management      Grow News   

Meet GROW’s New Page: The Basics of Herbicide Resistance

  May 21, 2024   Grow IWM
Sometimes, to solve a complex problem like herbicide resistance, you have to go back to the beginning and master the basics....
  Grow News      Herbicide Resistant Weeds      featured      Herbicide Resistance   

Can Weeds Adapt to Beat Harvest Weed Seed Control?

  May 7, 2024   Grow IWM
Weeds think they’re pretty smart. Since modern agriculture began, weeds have been evolving and lying in wait to grow again –...
  Grow News      Industry News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management   

Cover Crops and Residual Herbicides Team Up Against Palmer Amaranth

  April 30, 2024   Grow IWM
Palmer amaranth is famous for dodging herbicide control options, but it appears that a one-two punch of cover crop residue and...
  Grow News      Cover Crops      Herbicide Resistant Weeds      Industry News   

Farmer Forum Recap: Using Drones for Weed Management

  April 23, 2024   Grow IWM
In this GROW Farmer Forum, two panelists led a discussion of the current state of drone scouting, mapping and herbicide...
  Grow News      Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      DIGITAL AGRICULTURE      Precision Weed Management   

New Research on How to Apply Residual Herbicides When Planting Green

  April 16, 2024   Grow IWM
Planting soybeans into a green, living cover crop can require some extra management decisions, such as when to apply those...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

Meet Science for Success! 

  April 5, 2024   Grow IWM
Farmers successfully grow millions of acres of soybeans every year, but we know they are always looking for ways to better...
  Grow News      Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources   

Join a GROW Farmer Forum on Drones & Weed Management

  April 4, 2024   Grow IWM
This forum is now archived and available HERE. GROW will host a Farmer Forum on April 15, 2024, at 2 p.m. ET. The Forum will...
  Grow News      Industry News      Integrated Weed Management Innovations      DIGITAL AGRICULTURE      Precision Weed Management   

The Lowdown on Roller Crimpers

  April 2, 2024   Grow IWM
Roller crimpers can be a valuable tool for terminating cover crops or simply managing cover crop residue, especially when...
  Grow News      Integrated Weed Management Innovations      Cover Crops   

A Look at Planter Adjustments for Planting into Cover Crops

  March 26, 2024   Grow IWM
 When adjusting your planter to run through high-residue cover crops, Trey Hill has some advice: Don’t get too...
  Grow News      Integrated Weed Management Innovations      Cover Crops   

GROW Reports on New Harvest Weed Seed Control Research in Australia

  March 19, 2024   Grow IWM
I recently returned from a trip to Western Australia to meet with weed scientist Dr. Michael Walsh, along with fellow GROW team...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources      Harvest Weed Seed Management   

Sterile Pollen Technique Shows Promise for Palmer Amaranth Weed Control

  June 11, 2024   Grow IWM
The following is reprinted from Weed Science, a journal of the Weed Science Society of America. Recently published research in...
  Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources      Prevention   

Don’t Miss Last Call for Vining Weed Control in Corn

  June 4, 2024   Grow IWM
As your corn starts to canopy and close ranks this month, make sure those narrowing rows of today aren’t hiding the vines of...
  Grow News      Industry News      Herbicide Resistant Weeds      Prevention   

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

  May 28, 2024   Grow IWM
It happens like clockwork almost every year, starting in June. Wagons bounce over field ruts, filled with people clutching...
  Industry News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Weed Electrocution      Precision Weed Management      Grow News   

Meet GROW’s New Page: The Basics of Herbicide Resistance

  May 21, 2024   Grow IWM
Sometimes, to solve a complex problem like herbicide resistance, you have to go back to the beginning and master the basics....
  Grow News      Herbicide Resistant Weeds      featured      Herbicide Resistance   

Contributors Needed for Weed Mapping Project

  May 14, 2024   Grow IWM
It’s a wild, weedy world out there, but some scientists are hoping to impose a little order on the seasonal chaos of weed...
  Industry News      Herbicide Resistant Weeds      News From Other Sources   

Can Weeds Adapt to Beat Harvest Weed Seed Control?

  May 7, 2024   Grow IWM
Weeds think they’re pretty smart. Since modern agriculture began, weeds have been evolving and lying in wait to grow again –...
  Grow News      Industry News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management   

Cover Crops and Residual Herbicides Team Up Against Palmer Amaranth

  April 30, 2024   Grow IWM
Palmer amaranth is famous for dodging herbicide control options, but it appears that a one-two punch of cover crop residue and...
  Grow News      Cover Crops      Herbicide Resistant Weeds      Industry News   

Farmer Forum Recap: Using Drones for Weed Management

  April 23, 2024   Grow IWM
In this GROW Farmer Forum, two panelists led a discussion of the current state of drone scouting, mapping and herbicide...
  Grow News      Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      DIGITAL AGRICULTURE      Precision Weed Management   

New Research on How to Apply Residual Herbicides When Planting Green

  April 16, 2024   Grow IWM
Planting soybeans into a green, living cover crop can require some extra management decisions, such as when to apply those...
  Grow News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops   

Meet Science for Success! 

  April 5, 2024   Grow IWM
Farmers successfully grow millions of acres of soybeans every year, but we know they are always looking for ways to better...
  Grow News      Industry News      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources   

GROW Reports on New Harvest Weed Seed Control Research in Australia

  March 19, 2024   Grow IWM
I recently returned from a trip to Western Australia to meet with weed scientist Dr. Michael Walsh, along with fellow GROW team...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources      Harvest Weed Seed Management   

Allow Us to Introduce Ourselves (Again!)

  March 14, 2024   Grow IWM
Like the science we study and share, GROW is evolving and expanding quickly, and we decided it was time for our website to...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops      DIGITAL AGRICULTURE      Precision Weed Management   

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

  May 28, 2024   Grow IWM
It happens like clockwork almost every year, starting in June. Wagons bounce over field ruts, filled with people clutching...
  Industry News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Weed Electrocution      Precision Weed Management      Grow News   

Can Weeds Adapt to Beat Harvest Weed Seed Control?

  May 7, 2024   Grow IWM
Weeds think they’re pretty smart. Since modern agriculture began, weeds have been evolving and lying in wait to grow again –...
  Grow News      Industry News      Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management   

GROW Reports on New Harvest Weed Seed Control Research in Australia

  March 19, 2024   Grow IWM
I recently returned from a trip to Western Australia to meet with weed scientist Dr. Michael Walsh, along with fellow GROW team...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      News From Other Sources      Harvest Weed Seed Management   

Allow Us to Introduce Ourselves (Again!)

  March 14, 2024   Grow IWM
Like the science we study and share, GROW is evolving and expanding quickly, and we decided it was time for our website to...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Cover Crops      DIGITAL AGRICULTURE      Precision Weed Management   

Evaluating a New Weed Killer: Blue Light and Heat

  March 5, 2024   Grow IWM
Harvest weed seed control is a growing area of interest and study for farmers and researchers looking to target weed seeds during...
  Industry News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Harvest Weed Seed Management   

New Resource Alert: The Weed Management Planner

  December 19, 2023   Grow IWM
Creating a better weed control strategy just got a little easier! GROW’s newest resource, the Weed Management Planner, is...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Cover Crops      Harvest Weed Seed Management      Prevention   

Farmer Forum Recap: Using Seed Impact Mills for Weed Control

  December 12, 2023   Grow IWM
In GROW’s last Farmer Forum of 2023, a panel of farmers from Texas and Washington shared their experiences using seed impact...
  Harvest Weed Seed Management      Grow News      Mechanical Weed Control      Herbicide Resistant Weeds      Integrated Weed Management Innovations      Harvest Weed Seed Control   

Making Chaff Lining Work on Shepherd Grain Farms

  November 28, 2023   Grow IWM
John Shepherd is no stranger to integrated weed management. The Virginia farmer already uses cover crops and herbicides to battle...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management   

Eastern Shore Farmer Tries Chaff Lining to Defeat Weeds

  November 21, 2023   Grow IWM
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

  November 17, 2023   Grow IWM
This forum is now archived and available HERE. GROW will be hosting a Farmer Forum on December 4th, 2023, at 1 p.m. ET. Listen in...
  Grow News      Harvest Weed Seed Control      Integrated Weed Management Innovations      Herbicide Resistant Weeds      Harvest Weed Seed Management      Prevention   

Cheatgrass (Downy Brome) Management in the Western U.S. 

  November 7, 2023   Grow IWM
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

  October 24, 2023   Grow IWM
The following is reprinted from Penn State Extension. Due to dry conditions early in the production season, we are seeing more...
  Harvest Weed Seed Control      Herbicide Resistant Weeds      Mechanical Weed Control      Harvest Weed Seed Management      Prevention      Industry News   

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?

Broadleaf Signalgrass
Redroot & Smooth Pigweed
Texas Panicum
Canada Thistle
Common Pokeweed
Mustard Species in Wheat
Rush Skeletonweed
Russian Thistle
Prickly Lettuce
Mayweed Chamomile
Field Bindweed