trefle.io · Taken May 27, 2017 by Jean-René Girardeau (cc-by-sa)
Apiaceae
Cow-parsnip
Heracleum sphondylium
Also known as Common hogweed, Heracleum australe f. wendtioides, Heracleum sphondylium var. macrocarpum, Indian celery
Native Plants · Umbellifer · Large · Architectural · Pollinator · Woodland · Moist-Soil · White-Flowers · Native
Cow-parsnip is a large, architectural perennial that produces impressive umbrella-shaped flower heads attractive to pollinators. It prefers moist, rich soil and can handle partial shade, making it ideal for woodland gardens or naturalized areas. Handle with care as the sap can cause skin irritation in sensitive individuals.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Keep soil consistently moist but not waterlogged · Every 5-7 days in growing season
- Maintenance
- Moderate
- Soil
- loam
- Soil pH
- 5.5–6.5
- Temperature
- -30°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4a-10b
Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 6 ft
- Spacing
- 36 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Albania, Algeria, Austria, Belgium, Bulgaria, Buryatiya, Czechoslovakia, Denmark, East European Russia, East Himalaya, Finland, France, Germany, Great Britain, Greece, Haiti, Hungary, Iceland, Ireland, Italy
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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