Invasive Plants

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Invasive plants are pests.

They impact our environment:

Noxious weeds bring harm to our environment by altering habitats and disrupting essential ecosystem functions.

They impact our economy:

Once established, invasive plants can be costly to manage, if not impossible to eradicate.

They impact our communities:

  • Endanger public health and safety by increasing hay fever allergies and by having toxic properties harming humans, pets, livestock, and wildlife
  • Out-compete native vegetation and destroy natural habitats
  • Reduce agriculture forage yields and hay quality
  • Increase wildfire hazards and interfere with regeneration of forests
  • Decrease land values and impact recreation areas
  • Accelerate soil erosion and cause stream sedimentation with negative impacts to water quality

Did you know?

  • Invasive plants are spread by birds, wildlife, pets, and people
  • Many wildflowers contain invasive plant seeds
  • Picking plants along the road or other disturbed areas encourages spread
  • Invasive plants can be spread by your vehicle entering into a new area
  • Composting invasive plants does not prevent spread

Ways you can help

  • Be ‘PlantWise’ and know what you grow: request an invasive plant identification booklet or download an electronic copy here
  • Report invasive species: PRRD 1-800-670-7773; Complete a Weed Report
  • Avoid purchasing, growing, or trading unknown invasive plants and replace with non-invasive alternatives
  • Deadhead (clip off) flowers, seedpods, and berries of known invasive plants to prevent reproduction
  • Use wildflower seed mixes with caution; read the label and check location compatibility
  • Avoid picking plants along roadsides, gravel pits, or other disturbed areas
  • Clean recreation vehicles before and after entering in a new area
  • Properly dispose of yard, garden, and hanging basket waste into a compost pile or facility
  • Do not compost invasive plants with seeds; dispose at a local landfill or incineration facility
  • Prior to purchasing seed, ask for a seed analysis report to verify additional seeds that may be present

Destroy Daisy Campaign

Scentless chamomile and oxeye daisy are plagues to the agricultural communities within our region. These noxious weeds are costly to eradicate, upset the natural balance of our ecosystems, and decrease the value of agricultural products. If you come across these invasive plants Pull-Bag-Toss.

  • pull the plants by hand
  • bag the plants in clear bags
  • toss for free in one of the local landfills

Identifying Scentless Chamomile

Identifying Oxeye Daisy

Eye on Hawkweeds

Why are hawkweeds something to watch for?

Hawkweeds have economic and ecological impacts to our region. They form dense mats of leaves that outcompetes edible plants in hayfields and pastures. Invasive hawkweeds will replace native vegetation in open and disturbed areas areas such as meadows roadsides creating a threat to biodiversity.

Do you have a hawk-eye for identifying Hawkweeds?

Orange or yellow?
There is only one species of orange hawkweed and it is easily identified by its bright orange cluster of flowers. Yellow hawkweeds are trickier to identify as there are 8 native species and 12 invasive species, with the yellow flowers resembling other plants.

Spot the differences
The yellow flowers of the hawkweed look similar to: goat’s beard, hawksbeard, sow thistle, and dandelions. Invasive hawkweeds have yellow flowers that grow in clusters at the top of a single unbranched stem, stems contain a milky fluid and are covered in black hairs. The leaves are found at the base of the stem if the plant is invasive. Native hawkweeds have true leaves all the way up their stems.

Report a Weed

Contact the PRRD

Send a detailed description of the infestation along with a picture that includes the following to

  • Overall Appearance
  • Location
  • Surroundings
  • Flowers
  • Leaves
  • Stem

Download the PRRD Weed Reporting Form

Use the ‘Report-A-Weed’ App

Download the Report-A-Weed App. Ensure that a photo is included in the submission for confirmation of identification. The Report A Weed App is available on both Andriod and iOS devices.

Contact Info

Kari Bondaroff, Environmental Services Manager
Phone: 250-784-3200