Dandelion Doom

Dandelion Doom Overview

Dandelion Doom is weed killer with one active ingredient, good old iron. It is a selective weed killer and is safe to use on your lawn, it kills most broadleaf weeds, and as an added benefit it can prevent and control certain lawn diseases. Dandelion Doom kills weeds down to the root without harming your grass!


Visit our Sunday weed control page to learn more about Dandelion Doom and Weed Warrior.

For Best Results:

  • Avoid concrete and other light colored surfaces as the iron in Dandelion Doom can stain. (Weed Warrior does not stain.)
  • Use the wide spray setting and hold sprayer close to the weed to increase effectiveness.
  • Spray weeds until leaves are fully wet.
  • Results will be visible within hours.
  • Best practice is to repeat treatment every two weeks until weeds are gone.
  • The maximum application is 4 times per year in one area.
  • Do not use on a drought-stressed lawn.
  • Rain within 3 hours of application will likely require a re-application.
  • Do not apply when daytime temperatures exceed 85F.
  • People and pets can re-enter the area once the spray has dried.
  • Do not use on bentgrass. (an uncommon grass type for home lawns)

Effective On:

Use to selectively control/suppress broadleaf weeds and diseases growing in lawns.

Controls or suppresses weeds such as but not limited to:

Black medic (Medicago lupulina)

Broadleaf plantain (Plantago major)

Bull thistle (Cirsium vulgare)

Canada thistle (Cirsium arvense)

Common chickweed (Stellaria media)

Creeping buttercup (Ranunculus repens)

Creeping Charlie/Ground ivy (Glechoma hederacea)

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)

Oxalis (Oxalis spp.)

Persian Speedwell (Veronica persica)

Prostrate knotweed (Polygonum aviculare)

Shepherd’s-purse (Capsella bursa-pastoris)

Silverweed cinquefoil (Potentilla anserina)

Slender speedwell (Veronica filiformis)

White clover (Trifolium repens)

Wild chamomile (Matricaria chamomilla)

Controls or suppresses diseases such as but not limited to:

Dollar Spot


Snow Mold

Common Broadleaf Weeds



Broadleaf Plantain