Fiesta Weed Control

Fiesta Lawn Weed Killer is a low-risk selective broadleaf weed control product that is very effective in controlling weeds without harming the lawn. Fiesta Lawn Weed Killer (Reg. No. 29535 P.C.P. Act) received federal regulatory approval by the Pest Management Regulatory Agency (PMRA) in April 2010. Fiesta is registered and available for use in lawns, parks, playgrounds, cemeteries, golf courses and athletic fields to selectively control broadleaf weeds in turf. 


Fiesta Lawn Weed Killer was developed by Neudorff North America as an alternative to the traditional three-way chemical herbicides such as Killex that have been banned in many areas across Canada and the United States. The active ingredient of Fiesta is Iron in the form of FeHEDTA. Fiesta iron is chelated with hydroxyethylenediaminetriaceticacid (HEDTA) to form FeHEDTA. Fiesta contains 4.43% Iron in the form of FeHEDTA.

Fiesta’s mode of action is through Iron toxicity (oxidative damage) at the cellular level. The product is quickly absorbed by the plant tissue and transported down to the root. The excessive uptake of FeHEDTA by many broadleaf weeds leads to the contacted area turning black and brown (tissue necrosis) which subsequently causes plant death. Broadleaf weeds (dicots) absorb and uptake Iron differently than turfgrass (monocots) which provides the mechanism of selectivity. This allows the turfgrass to not be affected by the application and only the weed is controlled.

Benefits of Using Fiesta Lawn Weed Killer:

  • Fiesta weed control Kills weeds, but doesn’t harm the lawn!
  • Fiesta works extremely fast and control results are expected in 24 to 48 hours!
  • Fiesta weed control is made with Iron, which occurs in nature!
  • Fiesta weed control is rain-fast in just 3 hours!
  • Fiesta weed control is spot applied to weeds!
  • Fiesta weed control is completely odorless unlike many other herbicides!
  • Fiesta weed control is environmentally responsible: no extensive precautions are required as with most conventional herbicides!
  • Fiesta weed control is safe to use on new seedlings 7 days after germination!

(The latest release of Fiesta weed control is both timely and effective. John Payne of Rogers examines the effectiveness with before and after video of Dandelions Lavin had treated with the product Fiesta offered by Nutri-Lawn. Its made with iron, which occurs in nature. Fiesta kills the weeds, and not the lawn.)

Fiesta Lawn Weed Killer Effectiveness

Broadleaf weeds controlled and suppressed by Fiesta as listed on product label:

  • Black medic (Medicago lupulina)
  • Broadleaf plantain (Plantago major)
  • Bull thistle (Cirsium vulgare)
  • Canada thistle (Cirsium arvense)
  • Common chickweed (Stellaria media)
  • Creeping buttercup (Ranunculus repens)
  • Dandelion (Taraxicum officinale)
  • Dovefoot geranium (Geranium molle)
  • English daisy (Bellis perennis)
  • False dandelion (Hypochoeris radicata)
  • Healall (Prunella vulgaris)
  • Moss, liverworts, algae and lichens
  • Narrow-leaved plantain (Plantago lanceolata)
  • Persian speedwell (Veronica persica)
  • Shepherd’s-purse (Capsella bursa-pastoris)
  • Silverweed cinquefoil (Potentilla anserina)
  • Slender speedwell (Veronica filiformis)
  • White clover (Trifolium repens)
  • Wild chamomile (Matricaria chamomilla)

Contact your local Nutri-Lawn Franchise for more information about Fiesta Lawn Weed Killer and learn if it is offered in your local market. Nutri-Lawn offers products and services in accordance with Provincial pesticide regulations.

Request a quote now!

nutrilawn-before-fiesta.jpgBefore Fiesta Weed Control

48 hours after Fiesta Weed Control