leaf rosette of a spear thistle, cirsium vulgare

agricultural alberta allergic allergy annual artichoke asteraceae background beautiful bloom blooming blossom blue botany cardoon cardunculus cardy cirsium close closeup cynara daisy field flower garden green head invasive landscape lawn leaf macro material nature outdoors pasture pest plant prickly rosette shape spear spiny spring summer thistle vulgare weed wild wildflower