Invasive Plants

Introduced plants that grow on land and in water that have no natural means of control and will spread quickly and reduce biodiversity.

Introduced plants that grow on land and in water that have no natural means of control and will spread quickly and reduce biodiversity.

PLEASE NOTE THAT TO ACCESS THE FACT SHEET FOR A SPECIES, CLICK ON THE THUMBNAIL IMAGE TO ACCESS THE FACT SHEET LINK.

A close up of the leaves on a plant

Knotweed, Giant

A close up of the flowers on a plant

Knotweed, Himalayan

A plant with green leaves and white flowers.

Knotweed, Hybrid Japanese

A plant that is growing in the ground.

Knotweed, Japanese

Kochia

A close up of the leaves on a plant

Leafy Spurge

A close up of the head of a plant

Medusahead

A close up of the flower of mullein, common.

Mullein, Common

A close up of the plant with text on it

Nutsedge, Yellow

A field of daisies with the words oxeye daisy in front.

Oxeye Daisy

A field of white flowers with text that reads pepper-grass, broad-leaved.

Pepper-Grass, Broad-Leaved

A close up of the stem of a plant with green and white markings.

Persian Darnel

A field of tall grass with the sky in the background.

Phragmites

A plant with yellow flowers growing in the dirt.

Puncturevine

A purple loosestrife plant in the sun.

Purple Loosestrife

A field of queen anne 's lace in the grass.

Queen Anne’s Lace

A close up of the flowers of red bartisia

Red Bartsia

A field of yellow flowers with the words rush skeletonweed in front.

Rush Skeletonweed

A close up of the leaves on a russian olive tree

Russian Olive

A close up of some plants in the sand

Saltlover

A field of flowers with the words " scentless chamomile ".

Scentless Chamomile

A close up of yellow flowers with text

Sow Thistle, Perennial

A close up of yellow flowers with text

St. John’s-Wort, Common

A yellow flower with the name of starthistle, yellow.

Starthistle, Yellow

A close up of some yellow flowers with green leaves

Sulphur Cinquefoil

A close up of two yellow flowers with the words tall buttercup

Tall Buttercup

A close up of some pink flowers with the words " tamarisk / saltcedar species ".

Tamarisk/SaltCedar Species

A close up of yellow flowers with text

Tansy Ragwort

A close up of some yellow flowers with the words tansy, common below

Tansy, Common

A close up of some grass with the word thesium in front.

Thesium

A field of purple flowers with the name thistle, canada.

Thistle, Canada

A close up of some purple flowers in the grass.

Thistle, Marsh