Scientific Name: Heracleum mantegazzianum
Common Name: giant hogweed
Family Name: Apiaceae
Origin: Central / west Asia
Hardiness Zone: Zone 3: (-40 to -34 °C)
Plant Type: Biennial, Herbaceous perennial, Invasive plant
Mature Size: 3 - 5m x 2 - 3m (height x width)
Habit: Upright
Form: Vase
Texture: Very coarse
Landscape Uses:
Exposure: Full sun
Soil or Media: Well-drained
Leaves: Simple, Lobed, Alternate, Soft flexible, Pinnate venation, Pubescent, Ovate, Dentate, Incised, Palmately lobed, Pinnately lobed, Serrate
Flowers: Umbel, White, May-Jun
Fruit: Schizocarp, Brown, Jul-Aug
Key ID Features:
Stems green with obvious purple blotches, stiff white hairs (especially at nodes); leaves deeply lobed, margins sharply toothed and serrate, ovate, most 0.5 to 1.5m long; umbels compound, 20-50cm wide.