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Description
Heracleum Mantegazzianum, commonly known as giant hogweed, is a perennial herbaceous plant that can grow up to 14 feet tall. It is native to the Caucasus region of Eurasia but has been introduced to other regions as an ornamental plant. This plant is known for its large size and toxic sap, which can cause severe burns and skin irritation when exposed to sunlight.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Angiosperms |
| Class | Dicots |
| Order | Apiales |
| Family | Apiaceae |
| Genus | Heracleum |
Appearance
The giant hogweed has a thick, hairy stem that can grow up to 4 inches in diameter. Its leaves are large and deeply lobed, with a span of up to 5 feet across. The flowers are small and white, arranged in umbrella-shaped clusters that can reach up to 2 feet in diameter. The plant produces large, flat seeds that are up to 1/2 inch in diameter and have a brownish-black color.
Care Guide
Giant hogweed requires full sun to thrive and should be planted in well-draining soil. It is tolerant of drought conditions but should be watered regularly during dry spells. Fertilization is not necessary for this plant but can be beneficial in poor soil conditions. Giant hogweed is hardy in USDA zones 4-7.
Common Pests & Diseases
Giant hogweed is not typically affected by pests or diseases. However, it can be susceptible to root rot if planted in poorly draining soil.
Habitat
Giant hogweed is commonly found along streams and rivers, in fields, and in forested areas. It prefers moist soil conditions and can tolerate partial shade.
Question and Answer
Q: Is giant hogweed poisonous?
A: Yes, the sap of giant hogweed can cause severe burns and skin irritation when exposed to sunlight.
Q: How tall can giant hogweed grow?
A: Giant hogweed can grow up to 14 feet tall.
Q: Where is giant hogweed native to?
A: Giant hogweed is native to the Caucasus region of Eurasia.
Q: Is giant hogweed invasive?
A: Yes, giant hogweed is considered an invasive species in many regions outside of its native range.
Related Plants
- Heracleum sphondylium
- Heracleum maximum
- Heracleum persicum
References
- “Heracleum mantegazzianum.” Missouri Botanical Garden. Accessed August 24, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=248445&isprofile=0&.
- “Giant Hogweed.” New York State Department of Environmental Conservation. Accessed August 24, 2021. https://www.dec.ny.gov/animals/39809.html.
- “Giant Hogweed.” The Morton Arboretum. Accessed August 24, 2021. https://www.mortonarb.org/trees-plants/tree-and-plant-advice/horticulture-care/giant-hogweed.
