What weeds are classified as restricted, noxious, or nuisance in Alberta?
Restricted weeds in Alberta are: Red bartsia – Odontites serotina L. Diffuse knapweed – Centaurea diffusa L. Spotted knapweed – Centaurea maculosa L Nodding thistle – Carduus nutans L. Eurasian Water Milfoil – Myriophyllum spicatum L. Dodder – Cuscuta spp. Yellow star thistle – Centaurea solstitialis L. Noxious weeds in Alberta are: Russian knapweed – Centaurea repens L. Field bindweed – Convolvulus arvensis L. White Cockle – Lychnis alba Bladder campion – Silene cucubalus Cleavers – Galium aparine L. and Galium spurium Hoary cress – Cardaria spp. Knawel – Scleranthus annuus L. Perennial sow thistle – Sonchus arvensis L. Cypress spurge – Euphorbia cyparissias L. Leafy spurge – Euphorbia esula L. Stork’s bill – Erodium cicutarium L. Canada thistle – Cirsium arvense L. Toadflax – Linaria vulgaris Persian darnel – Lolium persicum Scentless Chamomile – Matricaria maritima L Common tansy – Tanacetum vulgare L. Blueweed – Echium vulgare L. Spreading dogbane – Apocynum androsaemifolium L. Fie
