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Annual Bluegrass Baby's-Breath Barnyardgrass Bladder Campion Blueweed Bog Rush Bull Thistle Burdock Canada Thistle Chicory Chickweed Cleavers Cluster Tarweed Common Bugloss Common Tansy Common Mallow Corn Spurry Creeping Buttercup Crupina Cudweed Curled Dock Dalmatian Toadflax Diffuse Knapweed Dodder Field Bindweed Field Scabious Foxtail Barley Giant Hogweed Goat's-Beard Gorse Green Foxtail Groundsel Hemp Nettle Henbit Himalayan Balsam Hoary Alyssum Hoary Cress Horsetail Hound's-tongue Japanese Knotweed Jointed Goatgrass Kochia Lady's-Thumb Lamb's-Quarters Leafy Spurge Marsh Plume Thistle Meadow Knapweed Milkweed Mullein Night-Flowering Catchfly Nightshade Nodding Thistle Nod. Beggar-Ticks Orange Hawkweed Oxeye Daisy Perennial Pepperweed Pigweed Pineappleweed Plantain Plumeless Thistle Puncturevine Purple Nutsedge Purple Loosestrife Quackgrass Rush Skeletonweed Russian Knapweed Russian Thistle Scentless Chamomile Scotch Broom Scotch Thistle Sheep Sorrel Shepherd's Purse Sow-thistle Spotted Knapweed St. Johns-Wort Stinkweed Sulphur Cinquefoil Tansy Ragwort Velvetleaf Water Hemlock White Cockle Wild Chervil Wild Mustard Wild Buckwheat Wild Oats Witchgrass Yellow Starthistle Yellow Toadflax Yellow Nutsedge

Field Guide to Noxious and Other Selected Weeds of British Columbia Canada Thistle (Cirsium arvense) Provincial Noxious Weed creeping rooted perennial growing erect to 1.2 metres; stalkless dark green leaves with irregular spiny lobes; flowerheads spineless and small compared to other thistles; flowers variable in colour from rose-purple to pink to white. only thistle with male and female flowers on separate plants Flowerheads with spineless bracts Seedling Young rosette

Return to Field Guide to Noxious and Other Selected Weeds of BC