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Learn about giant hogweed, a non-native invasive plant that can cause burns with its sap. Find out how to identify it, where it grows and how to avoid contact with it.
Giant hogweed (Heracleum mantegazzianum) is tall with thick bristly stems that are often purple-blotched. It is in the same family as cow parsley but cow parsley has much finer, fern-like foliage and generally flowers from April to June, whereas giant hogweed tends to flower later in June and July.
Jul 16, 2018 · Giant hogweed is an enormous invasive plant whose sap can cause painful burns and scarring. It's found in New England, the Mid-Atlantic, and Northwest regions of the country.
- cpicard@hearst.com
- Contributing Writer
Giant hogweed is a tall herbaceous plant in the carrot family, native to the Caucasus region and introduced to many parts of the world. It has phototoxic sap, white or greenish flowers, and can produce thousands of seeds that can persist in the soil for years.
May 20, 2024 · Learn how to spot the invasive giant hogweed, a plant that can cause skin burns and blisters, and how to distinguish it from the similar common hogweed. See photos, descriptions and tips from the Woodland Trust.
Apr 5, 2024 · Giant hogweed is a plant that can cause severe skin and eye reactions when its sap is touched. Learn how to identify, avoid, and treat giant hogweed burns, and what to do if you see the plant in your area.
Mar 1, 2022 · Giant hogweed is a non-native, invasive weed that can cause severe burns with its sap. Learn how to identify, dispose and get rid of it safely.
