trefle.io · Taken Jul 1, 2020 by Rebekah Gibson (cc-by-sa)
Apiaceae
Cartwheel-flower
Heracleum mantegazzianum
Also known as Wild parsnip, Hogsbane, Giant hogweed, Heracleum grossheimii
Native Plants · Giant Hogweed · Cartwheel Flower · Apiaceae · Hazardous Plant · Architectural · Perennial · White Flowers · Invasive Risk · Outdoor · Large Perennial
Giant hogweed is a large, architecturally dramatic perennial that thrives in moist, fertile soil with full sun to partial shade. It requires careful handling at all times as its sap causes severe phototoxic burns on skin contact. Be aware that this plant is regulated or banned in many regions due to its invasive potential and hazardous nature.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water deeply to keep soil consistently moist but not waterlogged · Every 7-10 days
- Maintenance
- High
- Soil
- loam
- Soil pH
- 6.5–7
- Temperature
- -20°F to 85°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 60 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Argentina South, Austria, Belgium, British Columbia, Bulgaria, Central European Rus, Connecticut, Czechoslovakia, Denmark, Finland, France, FøRoyar, Germany, Great Britain, Hungary, Iceland, Illinois, Ireland, Italy, Maine
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
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