giant hogweed


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giant hogweed

giant hogweed

Grows up to 17 feet high. Do not touch! Blisters skin, long-lasting scars, and—if it comes in contact with eyes—blindness. Numerous white flowers clustered in an umbrella-shaped head that is up to 80 centimetres (31 in) in diameter across its flat top. Dark reddish-purple stem and spotted leaf stalks that are hollow and produce sturdy bristles. Giant Hogweed is a photo-toxic plant. Its sap can cause phytophotodermatitis (severe skin inflammations) when the skin is exposed to sunlight or to UV-rays. Initially the skin turns red and starts itching. Then blisters form as it burns within 48 hours. They form black or purplish scars that can last several years. Protective clothing, including eye protection, should be worn when handling or digging it. If skin is exposed, the affected area should be washed thoroughly with soap and water and the exposed skin protected from the sun for several days. Also called Giant Cow Parsley, but not the same as common, much smaller cow parsley, which is edible.
References in periodicals archive ?
Residents with suspected sightings of a new plant population or an active pre-existing site are asked to call the Giant Hogweed Hotline at 1-877-464-9333.
Another invader that officials are trying to control locally is giant hogweed, a fast-growing plant that can reach heights of 15 feet and favors wetlands and stream banks.
Rhodri Thomas, ecology service manager at the Peak District National Park, said: 'The concern is that the Giant Hogweed could spread elsewhere in the park.
Invitation to tender for the control of Giant Hogweed,Japanese Knotweed and Himalayan Balsam in the Tweed Catchment.
Invading species, such as the Australian swamp-stonecrop, can smother ponds and lakes, disturbing sensitive ecosystems, and can contribute to biodiversity loss, while the giant hogweed poses a direct threat to human health.
While the giant hogweed warning was extended specifically to residents of Indiana, the Hoosier State isn't the only region in which
A third initiative, on the same two river systems, is the Trust's invasive weed control programme, mainly targeting Japanese Knotweed, Giant Hogweed and Himalayan Balsam.
It doesn't just deal with the notorious knotweed but also other invasive weeds such as giant hogweed and Himalayan balsam.
The Dee, Clwyd and Conwy river catchments are under threat from Japanese Knotweed, Himalayan Balsam and Giant Hogweed - rapidly-spreading plants that smother native wildlife.
Avoid giant hogweed, as if you are scratched by its leaves your skin becomes photo-sensitive and allergic to sunlight.
Other plants, such as giant hogweed Heracleum mantegazzianum and garden rue Ruta graveolens, cause a phototoxic reaction.
Another weed, giant hogweed, actually blocks the skin's resistance to ultraviolet light, often leading to serious sunburn.