Giant Hogweed
Heracleummantegazzianum

Synonym:Heracleum laciniatum

Synonym:Heracleum persicum

Synonym:Heracleum pubescens

Category
Biennials

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Sun to Partial Shade

Foliage
Velvet/Fuzzy

Foliage Color
Orange/Apricot

Height
15-20 ft. (4.7-6 m)

Spacing
36-48 in. (90-120 cm)

Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)

Where to Grow

Danger
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color
White/Near White

Bloom Characteristics

Bloom Size

Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer

Other details
May be a noxious weed or invasive

Soil pH requirements

Patent Information

Propagation Methods
From seed; direct sow outdoors in fall

Seed Collecting