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Priority Species 100% Costshare Program

Costshare Policies

leafy spurge.jpg

Leafy Spurge (Euphorbia esula)

Black Henbane.jpg

Black Henbane (Hyoscyamus niger)


Spotted Knapweed (Centaurea stoebe)

Oxeye Daisy.jpg

Oxeye Daisy (Leucanthemum vulgare)

Scotch thistle.jpg
Baby's Breath.jpg

Baby's Breath (Gypsophila)

Scotch Thistle (Onopordum acanthium)


Diffuse Knapweed (Centaurea diffusa)


Dalmatian Toadflax (Linaria dalmatica)

Purple Loosestrife.jpg

Purple Loosestrife (Lythrum salicaria)

Yellow Toadflax.jpg

Yellow Toadflax (Linaria vulgaris)

Common Tansy.jpg

Common Tansy (Tanacetum vulgare)

Japanese Knotweed.jpg

Japanese Knotweed (Reynoutria japonica)

Sulfur Cinquefoil.jpg

Sulfur Cinquefoil (Potentilla recta)

Orange Hawkweed.jpg

Orange Hawkweed (Pilosella aurantiaca)

For the Priority Species program, the District offers to provide herbicide treatments to private landowners on certain priority noxious weed species free of charge.

  • Treatments will only be provided on species that are on the District's priority weed species list (below). Species may be added or removed from this list as the District deems necessary.

  • At least one of these priority species must be positively identified on the property.

  • The property owner must sign a landowner agreement with the District (link below).

  • The treatments must be performed by District employees.

  • Herbicide application equipment may include backpack sprayers and/or a drone sprayer. 

  • If you believe one of these species exists on your property, please fill out a service request form (below) and a District employee will assist you with identifying the plant. 

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