sosnowsky's hogweed heracleum sosnowskyi is a dangerous invasive plant. rainbow on the hogweed field

plant nature outdoor weed heracleum herb green summer bloom blossom dangerous flora flower giant growing phototoxic poison poisonous white wild bright leaf overgrown rural sky sunny view sosnowsky closeup garden botanical inflorescence botany allergen alert blooming invasive meadow burn rainbow hogweed field