close up of the flower head of a wild teasel

plant flower grass wildflower prairie nature meadow field herb green thorns grassland leaf petal crop thistle background spikes cone spike blooming close biennial fuller's teasel herbaceous medicinal botanical pink weed spiky farmland invasive head bird food winterfood comb dipsacus fullonum teazel wild agriculture colored countryside environment species natural prickly botany garden purple macro bloom flora closeup blossom summer flowering bokeh