Marengo G
Product Overview
Marengo® G is a granular, selective, preemergence herbicide, that controls many annual grasses, broadleaves and sedges, providing long lasting control. Marengo G is labeled for use on over 250 nursery plants.
Marengo G offers up to 8 months of residual control. It controls a wide range of weeds, while offering excellent plant safety. Plus, Marengo G uses Verge® carrier to provide uniform particle distribution with virtually dust-free application.
Key Benefits
- Up to 8 months of selective, preemergence weed control reduces labor and eliminates repeat applications
- Labeled for use on over 115 ornamental crops
- Broad-spectrum control of over 70 different weeds means fewer escapes and fewer cleanup applications
- Effective on hard-to-control weeds such as eclipta, bittercress, groundsel, oxalis, marestail, spurge, crabgrass and annual bluegrass
- Spring or fall application flexibility to meet unique grower needs
- Verge® carrier provides uniform, virtually dust-free particle distribution
Product News
My Envu Rewards is a loyalty program for eligible Turf and Ornamental purchases.
Not a member? Sign up here.
Compare any herbicides. Use real costs. Maximize your investment.
This tool allows you to customize information to fit your exact parameters, see side-by-side numbers for any herbicides you choose, and plan for the future.
FAQ
Can I use Marengo G on a wide variety of plants?
Yes, Marengo G is labeled for use on over 115 ornamental plants.
Where can Marengo G be applied?
Marengo G can be applied in production nurseries including field-grown and container ornamentals, non-bearing fruit and nut trees, ornamental production facilities (such as shadehouses, lathhouses and hoophouses) and hardscapes.
What is the re-entry interval (REI) when using Marengo G?
The REI for Marengo G is 12 hours post-application.
What personal protective equipment (PPE) is required when using Marengo G?
Long-sleeved shirt, long pants and shoes plus socks are required.
How quickly does it work?
Marengo G will begin to work once it has been activated by rainfall or irrigation.
How long will the effects last?
Marengo G can last for up to 8 months, depending upon environmental conditions and timing of application.
Do I need to rotate Marengo G with other preemergence herbicides?
As part of best management practices and resistance management, it is recommended to rotate Marengo G with other classes of chemistry, such as Ronstar® G.
How does Marengo G fit into a weed management program?
Marengo G is the longest-lasting nursery herbicide that provides broad-spectrum weed control, including control of some of the toughest nursery weeds. Marengo G can be applied to a wide range of ornamentals with the convenience of an outstanding carrier.
Related Resources
Product Guides
Label
SDS
State Approvals
Marengo G has been federally approved and registered in all continental US states. Contact your Envu representative to learn more.

This map was most recently updated March 18, 2025
Similar Products

CoreTect Tree and Shrub Tablets
CoreTect® Tree and Shrub Tablets contain the active...
See product
Chipco 26019 FLO
Chipco® 26019 FLO is a foliar-applied fungicide recommended...
See product
Talstar Nursery
A granular formulation made specifically to meet the needs...
See product