Marengo G
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
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.
Related Resources
Product Guides
Label
SDS
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.
Map
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
Terrazole L
Terrazole® L/WP (FRAC 14) are fungicides designed for the prevention and management of soilborne diseases caused by Pythium and Phytophthora species. For optimal results, Terrazole L/WP should be applied at the first sign of disease symptoms and...
See product
Terrazole 35WP
Terrazole® L/WP (FRAC 14) are fungicides designed for the prevention and management of soilborne diseases caused by Pythium and Phytophthora species. For optimal results, Terrazole L/WP should be applied at the first sign of disease symptoms and...
See product
CoreTect Tree and Shrub Tablets
CoreTect® Tree and Shrub Tablets contain the active ingredient found in Merit, the world’s No. 1 tree and shrub insecticide, plus fertilizer. This product can be used when planting, or on established plants for controlled-release and long-residual...
See product
Chipco 26019 FLO
Chipco® 26019 FLO is a foliar-applied fungicide recommended for turfgrass disease control on golf courses, sod farms and institutional areas where fine turf is grown. This product is also effective as a broad-spectrum foliar spray, drench or dip for...
See product
B-Nine
B-Nine® WSG plant growth regulator shortens the stature of ornamental plants by decreasing internode length. When applied to foliage, it is absorbed into the leaves and translocated to growing points where it inhibits gibberellin synthesis,...
See product
Floramite
Floramite® SC ornamental miticide (IRAC Code 20D) delivers rapid and broad-spectrum control of multiple species of spider mites (Tetranychidae). Floramite SC is effective through both contact and residual activity, controlling all life stages of...
See product
Forbid 4F
Forbid 4 F offers outstanding knockdown and residual control of mites and all stages of whiteflies for four to eight weeks. Thanks to its novel mode of action, foliar-applied Forbid 4 F offers growers an effective tool for management of mites...
See product
Rhapsody
Rhapsody is an effective, preventative biofungicide. Rhapsody reduces the risk of fungicide resistance given it has multiple modes-of-action that are unique. It uses bacillus subtilis strain QST 713 to aid disease control with synthetic fungicides...
See product
Topchoice
A single application offers up to one year of fire ant control. Topchoice® provides control of fire ants for up to a full year in home and commercial lawns, golf courses, sports fields, school grounds and parks. A single application controls...
See product
Banol
Banol fungicide is one of the industry's leading Pythium control products. It delivers preventive and curative protection for Pythium blight, Pythium root rot and Phytophthora with no documented cases of resistance.
See product
Compass 50 WG
Compass® 50 WG is a broad-spectrum strobilurin fungicide that delivers the value of a contact with the power of a systemic. This is due to its unique mesostemic mode of action, which is resistant to weather. Compass 50 WG provides a high level of...
See product
Ronstar FLO
Ronstar herbicide controls weeds through shoots, not roots. So unlike competitive products that don’t distinguish between roots of weeds and roots of desirable plants, Ronstar doesn’t harm healthy turf. This product can be applied to sensitive...
See product
Marengo
Marengo® preemergence herbicide provides long-lasting weed control on over 90 weeds*. Marengo is a selective, preemergence herbicide, that works on broadleaves, grasses and annual sedges, providing long-lasting control. Marengo is labeled for...
See product
Savate
Savate provides excellent knockdown and residual control of all stages of mites and whiteflies.
See product
Aliette WDG
Systemic control of Phytophthora and downy mildew Aliette® is fully systemic, providing protection of the entire plant from downy mildew, Phytophthora and Pythium. It also controls Fire Blight and suppresses certain pathovars of Xanthomonas...
See product
Altus
Altus® is a novel insecticide that can be used on a wide range of plants anytime during the production cycle for targeted control of whiteflies, aphids and other harmful insects. With Altus, growers can utilize long-lasting drench applications for...
See product
Aria
Aria® insecticide has no-known cross-resistance with neonicotionids, organophosphates, carbamates or pyrethroids, making it an ideal replacement or rotation product in your integrated pest management (IPM) program. Aria effectively controls or...
See product
Adept
Adept® insect growth regulator (IRAC Code 15) is a highly effective solution for managing fungus gnats, shore flies and foliar-feeding insects in ornamental crops cultivated in greenhouses, shadehouses and interiorscapes. It features a 25% wettable...
See product
Broadform
Broadform fungicide helps maximize foliar disease control on key pathogens including Botrytis, leaf spot, and dieback diseases with both knock down and long lasting residual protection.
See product
Dismiss Turf
Dismiss® helps you achieve faster visible sedge control than ever before. Dismiss practically starts working before your eyes, producing visible results on sedges in as little as 24 to 48 hours! Not only does it attack the weed on the surface, but...
See product
Kontos
Damaging insects don't stand a chance. Kontos provides highly-effective control of sucking pests with true systemic activity.
See product
Durentis
Durentis® insecticide was developed with customer insight in mind, offering protection from above-ground and below-ground chewing pests, including all species of grubs and fall armyworms. Durentis contains a highly concentrated formulation — with...
See product
Fame SC
Fame® SC fungicide is powered by fluoxastrobin, the most advanced Strobilurin (FRAC 11) on the market. This fungicide is unique amongst the strobiliuron family for its 15-minute rainfastness, dollar spot suppression, and plant health benefits....
See product
OnyxPro
Envu developed OnyxPro® insecticide specifically for nursery and Christmas tree growers to prevent damage from devastating bark beetles, wood borers and clearwing borers.
See product
Talstar Select
When it comes to insect control, you need a solution that's tough on pests—but gentle on turf. Turn to Talstar®, a trusted insecticide brand to safeguard your greens, fairways, roughs and golf course ornamental plantings from insects and turf...
See product
Shuttle
Shuttle® SC (IRAC Code 20B) miticide is a unique chemical class (naphthoquinone derivative class) of miticide for the control of multiple species of spider mites, Lewis mites, broad mites, and many other mite genera and species. Shuttle SC...
See product
Talstar Nursery
A granular formulation made specifically to meet the needs of nursery and greenhouse professionals, Talstar® Nursery granular insecticide features a light-stable active ingredient in a specially designed, low-dust sand granule.
See product