closeup of yellow blooming common ragwort

agriculture benweed biodiversity blooming blossom blue botany bright cankerwort closeup colorful common cornflower countryside dog edge field flora flower green growth herb inflorescence jacobaea jameswort margin nature netherlands outdoors plant poisonous ragweed ragwort rural season senecio springtime staggerwort stammerwort standard stem stinking summer sunny tansy vulgaris weed wildflower yellow