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Toxicity flag: low

Keep this plant away from pets and children who chew on landscape plants.

Common Cowparsnip ( Heracleum maximum ) at The Arches Provincial Park, Newfoundland and Labrador, Canada.

Photo: Ryan Hodnett (CC BY-SA 4.0), via Wikimedia Commons

Fruit & ediblehigh water

Common Cowparsnip

Heracleum maximum

Common Cowparsnip (Heracleum maximum) is a landscape plant valued for its form and structure as much as its bloom. It reaches roughly 8 ft at maturity and blooms in early summer. Match it to full sun to part shade and keep the root zone consistently moist. One caveat worth knowing before you plant: parts of this species carry a toxicity flag (low), so keep it away from pets and kids who chew on landscape plants. Given a spot that matches its light and water needs, it is a dependable, low-drama addition to the yard.

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Hardiness range

A hardiness zone is not on file for this plant yet, and a ZIP-level fit check is not available for it.

How it does in your yard

HabitNot recorded
Hardiness zoneNot recorded
Mature heightAbout 8 ft
Waterhigh
Bloom periodEarly Summer
Native to the USNot recorded
Toxicitylow

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Questions

Is Common Cowparsnip native to the United States?

USDA PLANTS data does not record Common Cowparsnip as native to the United States.

What USDA hardiness zone does Common Cowparsnip need?

A minimum hardiness zone is not on file for Common Cowparsnip yet.