The plants, near Weismuller's lumber, are quite tall, the plant can grow to be 1.75 m. It's found in Port Carling,
The stems are quite large (2 - 8 cm in diameter), lending themselves to pea shooters, and much danger for small children. Immediately wash the area with soap and water and stay out of the sun.
The sun causes the reaction, and much care is required. It causes phytophotodermatitis. Within 24 hours you will get large blisters and emergency care may be required. Phytophototoxicity is amplified by humidity and perspiration. The blisters peak between 1 to 3 days.
by SM Shepherd
Phytophotodermatitis (PPD) is a phototoxic inflammatory dermal reaction induced by exposure to certain light-sensitizing plant products followed by exposure to long-wave ultraviolet light (UV-A 320-380 nm). Both components (plant and light) are required; neither agent alone can cause phytophotodermatitis.
• Giant weed that burns and blinds spreads across Canada [National Post]
• Giant weed that can cause blindness popping up in Ontario, B.C. [Globe and Mail]
A forestry official confirmed two new findings of giant hogweed last week in Renfrew County, west of Ottawa. It has previously been spotted in Newfoundland, New Brunswick, Quebec, southwestern Ontario, Alberta and British Columbia. About 50 plants were spotted in Toronto’s Don Valley two weeks ago.
Giant hogweed is already rampant in parts of Europe including England, where the rock group Genesis wrote a 1971 ode to the plant and its “thick dark warning odour.”
Its sap is carcinogenic and teratogenic, meaning it can cause cancer and birth defects.
If you get the sap in your eye, the chemical in it, furocoumarins, can singe the cornea and cause temporary or permanent blindness.
For more information on identifying or removing giant hogweed, call the Invading Species Hotline at 1-800-563-7711, or visit InvadingSpecies.com or WeedInfo.ca.
Thanks for the tip from Matt @ Muskoka Lakes Winery.