heracleum sosnovskyi inflorescence on blue sky background

allergen allergic beautiful bloom blossom blue botanical burn bush closeup danger dangerous europe field flora floral flower furanocoumarin giant grass green growth harmful heracleum hogweed inflorescence landscape large leaf meadow nature outdoor parsnip perennial plant poisonous sky sosnovskyi sosnowsky sosnowskyi stem summer toxic umbrella uncultivated vibrant weed white wild wildflower