Fiesta Herbicide - Lawn Weed Killer - 4 L

Read label before using. A selective eco-friendly liquid herbicide that kills weeds in your yard without damaging nearby grass. Fiesta kills weeds, not lawns! For domestic use only.

No more damaging nearby grass when spraying to control weeds with Fiesta Selective Weed Killer.

No more damaging nearby grass when spraying to control weeds with Fiesta Selective Weed Killer.

  • Fiesta Herbicide - 4L
    CAD $115.00


Quickly kill weeds in your yard without damaging nearby grass with Fiesta Herbicide Lawn Weed Killer, the number one weed control product to use in regulated areas.

Fiesta is a selective liquid herbicide that is used to kill broadleaf weeds in lawns without harming nearby grass. Designed for consumer / domestic use, Fiesta weed killer leaves lawns healthier and weed-free with its specially formulated iron chelate solution that works quickly, delivering same-day results, even in cooler weather. Since Fiesta is made of iron, it provides an eco-friendly approach for weed control, resulting in no unpleasant odors during or after application.

Results will show your grass looking its best with Fiesta, a patented broadleaf weed killer suitable for broadcast applications and spot treatments in domestic areas. Approved for use in Canada as a low-risk herbicide, Fiesta is also effective in pesticide-restricted areas where provincial bans prevent the use of traditional pesticides, such as golf courses, parks, cemeteries, sports fields, and other areas where pesticide bans exist.

How it works: Iron is bound to a chelating agent called hydroxyethylenediaminetriacetic acid (HEDTA), which keeps the iron soluble and readily available for plant uptake. Broadleaf weeds absorb chelated iron easily and in larger quantities than grass does, which leads to cellular damage and ultimate plant death in broadleaf weeds while nearby grass remains unharmed.

Fiesta can be used to control dandelions, false dandelions, English daisies, white clovers, black medics, bull thistle, Canada thistle, common chickweed, creeping buttercup, slender speedwell, narrow-leaved plantain, dove’s-foot geranium, lawn burweed, moss, algae, and suppression of broadleaved plantain.

Directions: Mix 1 part Fiesta Lawn Weed Killer with 24 parts water (40 ml in 960 ml of water) and apply at a rate of 200-400 mL per square meter. Uniform coverage is important. Repeat treatment once after 4 weeks if necessary.


  • Size: 4 L (1.05 US gal)
  • Coverage: Treats 743 square meters (8000 square feet)
  • Concentrated liquid to be mixed with water
  • Active Ingredient: Iron HEDTA (FeHEDTA)
  • No unpleasant odor
  • Can be used in cooler weather
  • Rain-fast in 3 hours
  • Pets and people can re-enter area once spray dries
  • For consumer / domestic use only
Store unused material, tightly closed, in original container only, away from open flame. Protect from freezing. To prevent contamination, store this product away from food or feed. Do not reuse empty container. Unused or partially used products should be disposed at provincially or municipally designated hazardous waste disposal sites. Dispose of content and / or container in accordance with local, regional, national, and/or international regulations.

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