Heracleum sphondylium Heracleum sphondylium or hogweed – cow parsnip is a biennial or perennial species belonging to the Apiaceae family. It has a rigid, hollow and hairy stem. The big leaves are also pubescent and once or twice pinnate. The sturdy stems bear white flowers which are in bloom from July to September. They produce glabrous achenes. Datasheet Common NameHogweed/ common hogweed/ cow parsnip Botanical nameHeracleum sphondyliumFamilyApiaceae Life CyclePerennialFoliageEvergreenBasic ColouryellowHeight15 -> 80 cmHabitatshechese lawns / Grasslands, sunny rocky cracks, rockeriesAltitude2200 mBloom TimeMay -> JulyPlant TypeHerb, MedicinalFruit TypeAchenedifferent tolerancesTell usUsed PartsLeaf, Root, Fruit, FlowerPlant UsesMedicine , Culinary, Fodder, Active substancespolyphenols, flavonoidsUSDA Zone> 6 (-23)Sun ExposureSunSoil pHAcidic, Alkaline, NeutralSoil MoistureDrySoil Type Sandy, Peaty, StonyPropagationby seeds / by sowing, by division, Self sowsGerminationTell us Pests/ DiseasesSlugs and snails Open Next Page To See More Photos. Heracleum sphondylium Heracleum sphondylium