Designed specifically for cool weather conditions, the premium ester formulation in Cool Power® is ideal for winter weed control, dormant warm season turf and early season applications in transition zones and cool season climates. By combining three powerful herbicides, Cool Power provides effective post-emergent control of dandelions, chickweeds, plantains, oxalis, spurge and a wide range of broadleaf weeds.

WE HAVE A SOLUTION. Quickly clean up broadleaves in cool weather conditions with Cool Power® selective herbicide or Escalade® 2.  

Learn how they work in rotation with other Nufarm solutions to provide powerful season-long weed management in cool-season turf with our Cool-Season Rotational Program.


at-a-glance info

EPA REG. NO.: 228-317
ACTIVE INGR.: MCPA (56.14%), triclopyr (5.0%), dicamba (3.6%)
CHEM. FAMILY: phenoxy, pyridine, benzoic acid
SIGNAL WORD: caution
PACKAGE SIZE: 2 x 2.5 gal, 30 gal


  • Cemeteries
  • Golf courses (fairways, aprons, tees and roughs)
  • Lawns
  • Non-crop areas
  • Turf (not pasture)
  • Parks

KEY weeds controlled

  • Black medic
  • Buckhorn
  • Chickweed
  • Clover
  • Dandelion
  • Dock
  • English daisy
  • Florida pusley
  • Ground ivy
  • Healall
  • Henbit
  • Knotweed
  • Kochia
  • Lespedeza
  • Mallow
  • Morningglory
  • Oxalis
  • Pigweed
  • Plantain
  • Ragweed
  • Sowthistle
  • Spurge
  • Thistle
  • Toadflax
  • Veronica
  • Wild geranium
  • Wild violet
  • Woodsorrel
  • Yarrow

See product label for complete list


  • Premium ester formulation for cool-weather weed control
  • Can be used in 2,4-D sensitive areas
  • Maximum weed control power in early spring and fall extends spray season
  • Contains triclopyr to control hard-to-kill weeds like ground ivy and wild violet
  • Can be used for spot treatment under warmer conditions
  • Tank-mix compatible with most liquid fertilizers and iron*
    • *Compatibility test required

use summary


Apply Cool Power® Selective Herbicide at the rate of 2-1/2 to 3-1/2 pints in 20 to 240 gals of water per acre (0.91 to 1.29 fl oz in 1/2 to 5.5 gals of water per 1,000 sq ft) to control weeds growing in turf planted to bluegrass, fescue, rye, bent (excluding golf greens and tees), bahia, bermuda, and zoysia.

When treating warm season turf that is completely dormant, the higher rates may be used. When treating warm season turf that is actively growing, use a lower rate. Avoid applications to warm season turf during transition from dormancy to green-up or green-up to dormancy.

Herbi® Controlled Droplet Applicator: Add 1-2/3 to 2-1/2 pints of Cool Power to the 5 pint Herbi bottle, then fill with water to make 5 pints of mixture or substitute 1/2 pint of a surfactant for water while agitating the solution.

While walking at approximately 1 pace (3 feet) per second, spray entire contents over 33,000 sq ft (3/4 of an acre). Do not overlap (double coverage) at edge of spray patterns. Reduced rates (use 1/2 of rate shown above) of Cool Power must be applied when grass is stressed from heat, drought, etc.

Controlled Droplet Applicators – (CDA), Atomizers, and Spinning Disk Applicators: Use Cool Power at 2-1/2 to 3-1/2 pints per acre (0.9 to 1.25 fl oz per 1,000 sq ft) in sufficient water to assure coverage (1 to 4 gals of water per acre is normal for this type of equipment).

NOTE: For all grasses (1) Do not overlap spray patterns; (2) Use reduced rates if grass is stressed from heat, drought, etc.; and (3) Follow CDA equipment spray instructions.


Roadsides (Including Aprons and Guard Rails), Rights-of-Way, and Other Similar Non-Crop Areas: For the control of broadleaf weeds, mix at a rate of 1/4 to 3/4 gal of Cool Power per 50 to 300 gals of water. This mixture will cover 43,500 sq ft. Thoroughly saturate all weeds with spray mixture. Apply any time between the time when plants come into full leaf (Spring) to when the plants begin to go dormant. Best results are obtained when weeds are young and actively growing. Do not cut weeds until herbicide has translocated throughout the plant causing root death. For small broadleaf weeds, use the lower rate. Heavy, dense stands require the higher rate of 3 oz of Cool Power per gal of water and spray to thoroughly wet all foliage.

See product label for complete directions for use.



Cleveland, Ohio  |  Untreated: April 15, 2019  |  Cool Power®: 14 DAT; 1 fl oz/1,000 sq ft; April 29, 2019



Learn how Cool Power works in rotation with other Nufarm solutions to provide powerful season-long weed management in cool-season turf.