heracleum sosnowskyi

heracleum sosnowskyi sosnowsky 039 hogweed invasive alien species european union dangerous humans small drops plant juice cause skin photosensitivity burns injury hot liquids ultraviolet radiation chemical scarring toxic liquid giant fennel cow parsley ground elder plants green outside outdoor outdoors botanical botany flowers garden gardening horticultural horticulture nature natural white floral flower foliage leaves summer tall close leaf