Noxious Weeds in the Columbia-Shuswap


Provincially designated noxious weeds (BC)

Annual Sow-thistle (Sonchus oleraceus)
Bohemian Knotweed (Fallopia x bohemica)
Bur Chervil (Anthriscus caucalis)
Canada Thistle (Cirsium arvense)
Common Reed (Phragmites australis subsp. australis)
Crupina (Crupina vulgaris)
Dalmatian Toadflax (Linaria dalmatica)
Dense-flowered Cordgrass (Spartina densiflora)
Diffuse Knapweed (Centaurea diffusa)
Dodder (Cuscuta spp.)
English Cordgrass (Spartina anglica)
Flowering Rush (Butomus umbellatus)
Garlic Mustard (Alliaria petiolata)
Giant Hogweed (Heracleum mantegazzianum)
Giant Knotweed (Fallopia sachalinensis)
Giant Mannagrass / Reed Sweetgrass (Glyceria maxima)
Gorse (Ulex europaeus)
Himilayan Knotweed (Polygonum polystachyum)
Hound’s-tongue (Cynoglossum officinale)
Japanese Knotweed (Fallopia japonica)
Jointed Goatgrass (Aegilops cylindrica)
Leafy Spurge (Euphorbia esula)
Milk Thistle (Silybum marianum)
North Africa Grass (Ventenata dubia)
Perennial Sowthistle (Sonchus arvensis)
Purple Loosestrife (Lythrum salicaria)
Purple Nutsedge (Cyperus rotundus)
Rush Skeletonweed (Chondrilla juncea)
Saltmeadow Cordgrass (Spartina patens)
Scentless Chamomile (Matricaria maritima)
Smooth Cordgrass (Spartina alterniflora)
Spotted Knapweed (Centaurea maculosa)
Tansy Ragwort (Senecio jacobaea)
Velvetleaf (Abutilon theophrasti)
Wild Oats (Avena fatua)
Yellow Flag Iris (Iris pseudacorus)
Yellow Nutsedge (Cyperus esculentus)
Yellow Starthistle (Centaurea solstitialis)
Yellow Toadflax (Linaria vulgaris)


Regionally designated noxious weeds

Blueweed (Echium vulgare)
Burdock (Arctium spp.)
Common Tansy (Tanacetum vulgare)
Hoary Cress (Cardaria spp.)
Meadow Knapweed (Centaurea pratensis)
Orange Hawkweed (Hieracium aurantiacum)
Sulphur Cinquefoil (Potentilla recta)