GIANT HOGWEED PROGRAM 2018 ANNUAL REPORT . Giant hogweed ( Heracleum mantegazzianum) is one of New York's most striking and dangerous invasive plants.A member of the carrot or parsley family, it was originally from Eurasia, but was introduced to the United States and Canada in the early 1900s as an ornamental, for use in beekeeping and for the use of its seeds as a spice. The earliest recording of the plant in the U.S. is 1917, from Highland Park, New York (outside of Rochester). Division of Lands and Forests Bureau of Invasive Species and Ecosystem … Giant hogweed is an enormous invasive plant whose sap can cause painful burns and scarring. Its stout stems are hollow with purple splotches and course bristles. Giant hogweed ( Heracleum mantegazzianum) is one of New York's most striking and dangerous invasive plants.A member of the carrot or parsley family, it was originally from Eurasia, but was introduced to the United States and Canada in the early 1900s as an ornamental, for use in beekeeping and for the use of its seeds as a spice. Its stout stems are hollow with purple splotches and course bristles.

After three consecutive yearly visits with no plants found, a site is considered eradicated. After removing giant hogweed plants, you may be left with an area of bare soil vulnerable to soil erosion, giant hogweed seedlings, and introduction of other invasive weeds. In 2011, Maine state horticulturists, describing the plant as " Queen Anne's lace on steroids", reported that it has been found at 21 different locations in Maine, with the number of plants ranging from one to a hundred.

Its sap can cause third degree burns and blindness and New York environmental officials are worried the plant is spreading across the state at an alarming rate, The New … Giant hogweed can be found along roadsides and streams and in fields and forests. In 2011, Maine state horticulturists, describing the plant as " Queen Anne's lace on steroids", reported that it has been found at 21 different locations in Maine, with the number of plants ranging from one to a hundred. Though similar to giant hogweed, cow parsnip can be identified by the “white flat-topped flower clusters,” according to the New York Department of Conservation.
More about Giant Hogweed: Giant Hogweed Identification - This page has photos of all parts of the giant hogweed plant as well as photos of common lookalike plants for identification purposes. Impacts Giant hogweed suppresses the growth of native plants, which has a negative impact on native wildlife. The plant is so dangerous that New York's Department of Environmental Conservation it has issued warnings not to touch the plants. New York Sea Grant Fact Sheet - Giant Hogweed (Heracleum mantegazzianum) - Poisonous Invader of the Northeast (Aug 2009) (PDF | 888 KB) New York Sea … It was intentionally introduced via the nursery industry where it eventually escaped and spread. The New York State Department of Environmental Conservation has had an active program to control giant hogweed since 2008.

It's found in New England, the Mid-Atlantic, and Northwest regions of the country. Giant Hogweed Heracleum mantegazzianum Description: Giant hogweed is an incredibly tall biennial or perennial herb, growing up to 20 feet in height.