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Jun 29, 2022 · Learn about the identification, habitat and dangers of giant hogweed, a non-native invasive plant that can cause burns. See images of giant hogweed and compare it with similar plants such as common hogweed, cow parsley and ground elder.
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.
May 20, 2024 · This is how to identify giant hogweed, from its stems, leaves and flowers - see the difference between common hogweed, according to Woodland Trust.
How to identify giant hogweed. Giant hogweed can grow to an enormous size, often in excess of two metres and possibly as tall as five metres, with thick stems more than 8cm in diameter. The leaves hang heavy like tired hands, deep green with pronounced lobes and jagged edges.
Jul 16, 2018 · The easiest way to identify giant hogweed is to look for purple blotches and white hairs on the stem. If the plant has both those qualities, there's a strong chance it's the real thing.
- cpicard@hearst.com
- Contributing Writer
Aug 22, 2024 · Giant hogweed looks like a much larger version of cow parsley. Biennial, it forms a rosette of lobed leaves in its first year before sending up a flower spike in its second year, and then setting seed and dying.
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Giant hogweed is an immensely tall umbellifer (member of the carrot family) that displays large, white, umbrella-like clusters of flowers. Its hollow stem is ridged and purple-spotted, and its leaves are large and divided.
