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Visit the Michigan Department of Agriculture and Rural Development's Giant Hogweed webpage for more information. Identification: White flowers in an umbrella-shaped cluster up to 2.5 feet across. Plant is 7 to 14 feet tall. Stems are green with purple splotches and visible, coarse, white hairs.
- Giant Hogweed
Giant Hogweed. (Heracleum mantegazzianum) *Detected in...
- Giant Hogweed
Heracleum mantegazzianum, commonly known as giant hogweed, [2] [3] [4] [5] is a monocarpic perennial herbaceous plant in the carrot family Apiaceae. H. mantegazzianum is also known as cartwheel-flower, [3] [4] [5] giant cow parsley, [6] giant cow parsnip, [7] or hogsbane.
4 sie 2015 · Giant hogweed made it to the USDA dangerous noxious weed list and has been scouted for in Michigan since 1998. With recent media attention, folks are on the lookout for the plant, but are not likely to find it. “This is not a weed-on-the-move,” stated one MDARD official.
Giant Hogweed. (Heracleum mantegazzianum) *Detected in Michigan* Identification: White flowers in an umbrella-shaped cluster up to 2.5 feet across. Plant is 7 to 14 feet tall. Stems are green with purple splotches and visible, coarse, white hairs. Leaves are up to 5 feet wide, lobed and deeply incised.
Heracleum mantegazzianum is a herbaceous biennial or monocarpic perennial that can grow up to 15-20 ft. (4.3-5.8 m) in height. The stem is hollow and usually blotched with purple. Both the leaf stalks and stem produce pustulate bristles. The stem can be 2-4 in. (4.8-9.6 cm) in diameter.
1 cze 2012 · Giant hogweed is a biennial or perennial herb. Leaves. Alternating leaves have deep irregular lobes and coarse, sharp teeth on the margins. Leaves are very large—up to 5 feet across. Stems. The stems are hollow with coarse white hairs that are noticeable at the node and base of the petiole. They are green in color with purple blotches or specks.
19 cze 2012 · Giant hogweed may look like a beautiful architectural addition to the landscape, but this dramatic perennial plant also has a sinister side. As its Latin name implies, Heracleum mantegazzianum looks a little like Hercules when it reaches its full height of 6 to 12 feet in Michigan.
