Field Guide to Noxious and Other Selected Weeds of British Columbia
Cleavers (Galium aparine)
Regional Noxious Weed
native annual with square stems and short, bristly downward
pointing hooks on stem corners; rough, hairy leaves grow in whorls
of 6 to 8; burr-like seeds produced in pairs
commonly known as bedstraw, cleavers is particularly damaging in
cereals and canola where it clings to and trails around these
crops
Leaves in whorl around square stem
Seed-cases produced in pairs are covered with hooked hairs