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Spring has finally arrived! Flowers have already started to emerge, and it won’t be long before the leaves really start to fill in the trees. Naturally, with warmer temperatures comes the sound of the lawn mower — the growing season has begun! Unfortunately, grass isn’t the only thing that grows in your yard. Scattered across the soil in and below the thatch layer are countless seeds that secretly landed in your yard last fall, and they’ve been waiting all winter for this opportunity. Fortunately, there is a solution to this problem; one that kills the weeds from the onset but leaves your lawn unharmed: pre-emergent herbicides.
WHAT IS A PRE-EMERGENT HERBICIDE AND HOW DOES IT WORK?
Pre-emergent herbicides are designed to target newly germinating weeds before they become problematic. Pre-emergent herbicides vary slightly by chemistry and specific mode-of-action, but in general, they are designed to stop newly germinating seeds from rooting in the soil. Most pre-emergents work to disrupt root systems from developing. When roots are unable to locate water and nutrition, newly germinated seeds desiccate and starve once the endosperm (nutrition source inside the seed coat) has been depleted.
Specifically, many pre-emergent herbicides are members of the Dinitroaniline family of herbicides. These herbicides function as microtubule assembly inhibitors. Dinitroanilines are water-insoluble and do not work with foliar applications; they must be integrated into the soil. One of the more popular members of this family, Prodiamine
has low volatility and relatively quick half-life in the soil (the time it takes for this molecule to break down in the environment).
WHEN SHOULD PRE-EMERGENT HERBICIDES BE APPLIED?
The vast majority of pre-emergent herbicides are applied in early-mid spring (depending on latitude), right before grasses begin aggressive growth. This strategy is employed to ensure that adequate chemistry is present in the ground right before most weeds begin germinating. The later a pre-emergent is applied in the growing season, the less effective it will be against controlling a large number of weeds. Most pre-emergent herbicides have no effect on weeds that have established a root network, even if the weeds are still relatively small. The map below shows roughly when to consider applying spring pre-emergent herbicides to your lawn.
Many perennial weeds also release seeds in mid-late summer in the hopes that the seeds might germinate and root before the arrival of winter. Additionally, while pre-emergent herbicides may be successful at preventing weeds from growing in your own yard (and producing more seeds…), many seeds are transported into your yard by the wind. For these reasons, a late summer/early fall pre-emergent application should also be considered. Many landscape professionals use a pre-emergent herbicide coated onto a high-nitrogen fertilizer to avoid having to make two separate fall applications (in essence, a fall weed & feed).
WHAT CAN PRE-EMERGENT HERBICIDES BE USED ON?
Most pre-emergent herbicides are effective against many grasses (monocots) and broadleaf weeds (dicots). Considered to be a one of the most obnoxious lawn invaders, many pre-emergents also control crabgrass, however some products require multiple applications for effective control. If you have a crabgrass infestation, be sure to read the label carefully before purchasing to ensure the product will be effective.
LIST OF THE MOST COMMON WEEDS CONTROLLED BY MOST PRE-EMERGENTS.
- Annual bluegrass (Poa annua)
- Barnyard grass
- Carpetweed-04
- Chickweed (common)
- Chickweed (mousear)
- Crabgrass (large and smooth)
- Crowfoot grass
- Cup grass (woolly)
- Foxtails (annual),
- Goosegrass
- Henbit
- Itchgrass
- Johnsongrass (seedling)
- Jungle rice
- Knotweed
- Kochia
- Lambs quarters (common)
- Lovegrass, Panicum (browntop, fall and Texas)
- Pigweed
- Purslane (common)
- Pusley (Florida)
- Rescue grass
- Shepherd spurse
- Signal grass (Broadleaf)
- Speedwell (Persian)
- Sprangle top
- Spurge (prostate)
- Witchgrass
- Wood sorrel (yellow, from seed)
WHAT GRASSES ARE SAFE TO USE WITH MOST PRE-EMERGENT HERBICIDES?
- Bermuda grass
- Bahia grass
- Centipede grass
- Kikuyu grass
- Seashore Paspalum
- St. Augustine grass
- Tall Fescue (including turf-type)
- Fine Fescue
- Zoysia grass
- Buffalo grass
- Kentucky Bluegrass
- Perennial Ryegrass
- Creeping Bentgrass (0.5 inches or more in height)
NOTE:
If in doubt on your grass species, refer to the Turf Grass Climate Regions Info Graph
and consult with your local lawn care expert to determine the best pre-emergent product to use on your turf grass.
WHAT SHOULD A PRE-EMERGENT HERBICIDE NEVER BE USED ON?
Pre-emergent herbicides should NEVER be used on or around newly seeded grass, newly applied sod, or any plants being grown from seed (such as herbs, vegetables, and wild flowers). If you want to grow anything that is being started from seed, don’t use pre-emergent herbicides on or near those plants.
WHAT ARE EXAMPLES OF PRE-EMERGENT HERBICIDES AVAILABLE AT TURF CARE?
TurfCare™ Supply has a wide variety of pre-emergent control products. These herbicides can be coated onto fertilizer, soil amendments, or carriers. Such examples include:
- Barricade
- Dimension
- Echelon 4SC
- Evade 4FL
- Oxadiazon
- Pendimethalin
- Pre-M
- Prodiamine
- Ronstar
- Spectile
- Stonewall
For professional fertilizers, humic and AMP-XC™ enriched products available, please visit TurfCare’s online Product Catalog.
For green industry professionals or others interested in ordering Turfcare products, please contact our Customer Service
to find a distributor near you.
References:
https://www.gardeningknowhow.com/plant-problems/weeds/pre-emergent-herbicides.htm
http://msue.anr.msu.edu/resources/crabgrass-control-in-home-lawns
Turf Care Supply - TurfReport Blog
Platte River Equity Portfolio Company Turf Care Supply, LLC Acquires Agri-Nutrients, Inc. Brunswick, OH , October 9, 2024 – Platte River Equity (“Platte River”) portfolio company Turf Care Supply, LLC (“Turf Care”) is pleased to announce its acquisition of Agri-Nutrients, Inc. (“Agri-Nutrients”), a manufacturer and blender of custom granular fertilizers for the turf & ornamental (“T&O”) industry. This strategic acquisition provides Turf Care with an established presence in the south-central United States, an enhanced product portfolio and additional manufacturing capacity. “This acquisition represents much more than a business transaction; it is a strategic step forward in expanding our reach and enhancing our customers’ growth. By bringing Agri-Nutrients into the Turf Care family, we are broadening our product portfolio, expanding our market presence and further positioning ourselves as a leader in providing innovative solutions for our customers,” said Mark Mangan, President of Turf Care. “We are excited about joining the Turf Care team,” said Jim Montgomery, President of Agri-Nutrients. “At Agri-Nutrients, our core values center around customer service and product innovation, and we are confident that this combination will allow us to better serve the needs of our customers.” “Platte River welcomes the Agri-Nutrients team to Turf Care. This transaction underscores our long-term commitment to fostering growth through both organic and inorganic initiatives across the Turf Care platform,” said Tarun Kanthety, Vice President of Platte River. “The partnership with Agri-Nutrients strengthens Turf Care’s value-added offering, creating additional growth opportunities across the combined customer base.” B&A Corporate Advisors served as the exclusive financial advisor to Agri-Nutrients. About Agri-Nutrients Founded in 1992 and based in Catoosa, OK, Agri-Nutrients is a manufacturer and blender of custom granular fertilizers for the T&O industry, predominantly selling into the lawn care, sports turf and golf course end markets. About Turf Care Supply Established in 1974, Turf Care Supply is one of the largest formulators and blenders of urea products to the T&O market. Turf Care has a comprehensive product portfolio of fertilizers, combination products (herbicide/insecticide), soil amendments and enhanced efficiency fertilizer ingredients. Turf Care's products are sold to distributors and blenders serving the commercial, residential and golf end markets. Turf Care operates four manufacturing facilities strategically located throughout the eastern U.S. About Platte River Equity Founded in 2006 and based in Denver, CO, Platte River Equity is a private equity firm focused on investments in established lower middle market operating companies within targeted industrial sectors where it has substantial operating and investing experience. Platte River utilizes prudent capital structures in order to invest in future growth opportunities and withstand changing economic environments. The firm also provides significant ongoing support to its portfolio companies through dedicated resources across functional areas. The firm has raised funds with committed capital in excess of $1.6 billion and is currently investing out of its fifth fund. The Platte River team is the largest collective investor across its funds, deeply aligning the firm with its investors and portfolio company management teams.
Dear Valued Industry Partners and Customers, We are pleased to announce that Turf Care Supply, LLC has acquired Agri-Nutrients, Inc. (October 1, 2024) a respected manufacturer in the turf and ornamental fertilizer industry. This acquisition marks a significant step forward in our commitment to providing you with an expanded range of innovative products, services, and industry expertise, all designed to support your business’s continued growth and success. As a valued partner or customer, you will benefit from enhanced service capabilities and an extended geographic reach, thanks to Agri-Nutrients, Inc.’s strategic facility located in the Port of Catoosa, Oklahoma. With this established presence in the Southwest and Western markets, Turf Care Supply, LLC’s expanded operational footprint will allow us to serve a broader region with greater efficiency, delivering even stronger support to help drive your business forward. We are dedicated to ensuring a seamless transition while maintaining the high standards of service you expect. If you have any questions or would like to explore how this new location can enhance your operations, please feel free to contact your account manager or our customer service team. Thank you for your continued trust in Turf Care Supply, LLC. We look forward to partnering with you as we grow together and continue supporting your success. Sincerely, Mark Mangan President Turf Care Supply, LLC
With a focus on providing sustainable manufacturing and reducing carbon emissions, Turf Care Supply has embraced the electric power market with the latest mobile equipment upgrades. Completed in June 2023, TCS received all deliveries of electric forklifts to all three manufacturing facilities, including Hatfield, MA, Martins Ferry, OH and Sebring, FL.