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NITRO-PHOS

Nitrophos Weed & Feed (Trimec)

Nitrophos Weed & Feed with Trimec is a quick-release fertilizer that controls broadleaf and other common weeds while fertilizing and feeding your lawn.

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Nitrophos Weed and Feed product page
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Nitrophos Weed & Feed with Trimec, manufactured by Nitrophos, is a specialized lawn care product designed to simultaneously nourish your turf and combat a broad spectrum of weeds.

The fertilizer boasts a 15-5-10 NPK ratio, providing 15% Nitrogen for vigorous growth, 5% Phosphorus for strong root development, and 10% Potassium to enhance disease resistance and overall plant health. Targets emerged broadleaf weeds like chickweed, poison ivy, wild geranium, and more without harming desired grass species, preserving lawn integrity.

Nitrophos Weed & Feed with Trimec offers a convenient and effective solution for homeowners seeking to enhance their lawn's health while controlling unwanted weeds. Its balanced nutrient profile, combined with a potent herbicide, ensures that your turf remains vibrant, beautiful, and free from weeds.

Tools Needed

You will need a hand or push spreader, but we recommend a broadcast spreader for the best results.

How to Use

Nitrophos Weed and Feed being spread on a lawn

  • Step 1: Mow your lawn to its normal height 1 to 2 days before application. Determine how much Nitrophos Weed and Feed you need by first measuring the square footage of the treatment area. To find this, measure the treatment areas' length and width in feet, then multiply them together (length x width = square footage). Apply 3.2 to 4.0 pounds of Nitrophos Weed & Feed With Trimec per 1,000 sq. ft. of turfgrass. The maximum broadcast application rate is 4.0 pounds of product per 1,000 sq. ft. per application. The maximum number of broadcast applications is limited to 2 per year with a minimum of 30 days between each application. 
  • Step 2: Calibrate your spreader to the right spreader setting for application and load the granules into the spreader. The label should provide you with the proper calibration recommendation.
  • Step 3: Push the spreader from one side of the lawn to the other, ensuring an even spread. This may take about two perpendicular passes on your lawn.
  • Step 4: Water the lawn a day or two after the application to help the product seep into the soil and stick to the weed leaf surface to control weeds.
  • Step 5: Conduct a follow-up application after 30 days to ensure the correct amount of nitrogen is put down.

Where to Use

Nitrophos Weed and Feed can be used on home lawns containing Kentucky bluegrass, fescues, perennial ryegrass, bermudagrass, zoysiagrass, St. Augustinegrass, Bahiagrass, and centipedegrass.

Do not use dichondra or Floratam St. Augustine grass. 

When to Use

Apply when weeds are young and actively growing, preferably in the morning when dew is on the grass. If the grass is not moist at the time of application, sprinkle lightly with water to hold the material and prevent dust drift onto non target plants.

Safety Information

Nitrophos Weed and Feed With Trimec are safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when applying and handling this product.

Special Considerations

Do not use this product on or near desirable plants, and avoid spreading granules onto exposed root systems or adventitious shoots (rhizomes) within the drip line of desirable trees and shrubs since injury may result.

More Information
Restricted Use No
Shipping Restrictions AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, UT, VA, VT, WA, WI, WV, WY
Availability Online
Signal Word CAUTION
Keith's Pro Tip "Watering your lawn a day or two before applying the Weed and Feed can help it be more effective since the moist soil and turf will help the product to stick better and prevent drift."
Target Pests Multi Aster, Black Medic, Black-eyed Susan, Broadleaf Plantain, Bull Thistle, Burning Nettle, Buttonweed, Carolina Geranium, Chickweed, Clover, Cocklebur, Common Chickweed, Common Mullein, Common Purslane, Creeping Jenny, Crimson Clover, Curly Dock, Dandelion, Dichondra, Dollarweed, Florida Pusley, Henbit, Horsenettle, Lambsquarters, Morningglory, Mouseear Chickweed, Nettle, Oxalis, Plantain, Poison Ivy, Poison Oak, Prostrate Pigweed, Prostrate Spurge, Prostrate Vevain, Prostrate_Knotweed, Russian Thistle, Sheep Sorrel, Sowthistle, Spotted Spurge, Stinging Nettle, Thistle, Virginia Buttonweed, Virginia Creeper, Wavyleaf Bullthistle, White Clover, Wild Aster, Wild Carrot, Wild Garlic, Wild Geranium, Wild Onion, Wild Radish, Wild Strawberry, Wild Vetch, Yarrow, Ground Ivy, Mustard, Sweet Clover
Time to Kill Weeds exposed to Nitrophos Weed and Feed should die within a few weeks of contact.
Chemical Type Fertilizer
Formulation Granular
Application Methods Granular Spreading
Product Drawbacks This is a slow-release chemical so results aren't going to be instant.
Active Ingredient Dimethylamine salt of (+)-(R)-2-(2-methyl-4-chlorophenoxy) propionic acid 0.29% Dimethylamine salt of 2,4-dichlorophenoxyacetic acid 0.17% Dimethylamine salt of dicamba 0.07% Nitrogen 15% Phosphate 5% Soluble Potash 10% Chlorine not more than 7.60% Boron 0.02% Copper 0.05% Iron 0.10% Manganese 0.05% Molybdenum 0.0005% Zinc 0.05% Trimec
Application Equipment Hand Spreader, Push Spreader
Mix Rate Apply 3.2 to 4.0 pounds of Nitrophos Weed & Feed With Trimec per 1,000 sq. ft. of turfgrass.
Use Sites Outdoors
Yield 40 lb. covers 10,000 sq. ft.
EPA Registration No. 2217-603-54343
Shelf Life Nitrophos Weed and Feed can last from 3 years in storage when kept in a cool, dry place.
Comparable Products Solutions 15-5-10 Weed & Feed Fertilizer with Trimec
Children or pets? No
Property Characteristics None
AvailabilityOnline
Restricted UseNo
BrandNITRO-PHOS
Keith's Pro Tips"Watering your lawn a day or two before applying the Weed and Feed can help it be more effective since the moist soil and turf will help the product to stick better and prevent drift."
Product DrawbacksThis is a slow-release chemical so results aren't going to be instant.
Target PestsAnnual Sweet Clover, Aster, Black-eyed susan, Black medic, Broadleaf plantain, Bull thistle, Burning nettle, Buttonweed, Carolina geranium, Common chickweed, Mouseear chickweed, Crimson clover, Sweet clover, White clover, Cocklebur, Common mullein, Creeping jenny, Curly dock, Dandelion, Dichondra, Dollarweed, Florida pusley, Ground ivy, Henbit, Horsenettle, Lambsquarters, Morningglory, Mustard, Nettle, Oxalis, Plantain, Poison ivy, Poison oak, Prostrate knotweed, Prostrate pigweed, Prostrate spurge, Prostrate vervain, Common purslane, Russian thistle, Sheep sorrel, Sowthistle, Spotted spurge, Stinging nettle, Thistle, Virginia buttonweed, Virginia creeper, Wavyleaf bullthistle, Wild aster, Wild carrot, Wild garlic, Wild geranium, Wild onion, Wild radish, Wild strawberry, Wild vetch, and Yarrow.
Application EquipmentHand Spreader, Push Spreader
Application MethodsGranular Spreading
Active IngredientDimethylamine salt of (+)-(R)-2-(2-methyl-4-chlorophenoxy) propionic acid 0.29% Dimethylamine salt of 2,4-dichlorophenoxyacetic acid 0.17% Dimethylamine salt of dicamba 0.07% Nitrogen 15% Phosphate 5% Soluble Potash 10% Chlorine not more than 7.60% Boron 0.02% Copper 0.05% Iron 0.10% Manganese 0.05% Molybdenum 0.0005% Zinc 0.05% Trimec
Product TypeFertilizer
FormulationGranular
Application RateApply 3.2 to 4.0 pounds of Nitrophos Weed & Feed With Trimec per 1,000 sq. ft. of turfgrass.
Shelf LifeNitrophos Weed and Feed can last from 3 years in storage when kept in a cool, dry place.
Yield40 lb. covers 10,000 sq. ft.
Use SitesOutdoors
Time to KillWeeds exposed to Nitrophos Weed and Feed should die within a few weeks of contact.
Comparable ProductsSolutions 15-5-10 Weed & Feed Fertilizer with Trimec
Use Caution WithBentgrass, St Augustine
EPA Registration #2217-603-54343

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