Giant weed that burns and blinds spreads across

A huge, toxic plant that can burn skin and cause permanent blindness has been found for the first

time in eastern Ontario, prompting calls for a federal response to contain the spread of the

poisonous plant as fear grows no province is immune. 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 Torontos Don Valley two weeks ago.

Contact with the weeds clear, watery sap can be very dangerous, Jeff Muzzi, Renfrew Countys forestry

manager and weed inspector. What it does to you is pretty ugly, said Mr. Muzzi. It causes blisters.

Large blisters and permanent scarring. What’s left over looks like a scar from a chemical burn or fire.

Even a tiny trace of sap applied to the eye can singe the cornea, causing temporary or permanent

blindness, he added. The chemicals in the sap, furocoumarins, are carcinogenic and teratogenic,

meaning they can cause cancer and birth defects.

Most provinces have not authorized official weed inspectors to destroy the poisonous plant because

it does not impinge on agriculture. Mr. Muzzi said he only began eradicating the plant because

nobody else would. It’s not really my job, he said. I just thought, somebody better take the bull by

the horns here, cause this stuff is really dangerous.

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.  Native to the Caucasus Region

and Central Asia, it was brought to Europe and North America as a botanical curiosity in the 19th and

20th centuries and has spread rapidly. It typically grows on riverbanks, ditches and roadsides.

The risk of infection was so high, Mr. Muzzi wore a Tyvek suit, protective goggles, rubber gloves,

the whole nine yards, to remove it, he said. Which is really nice in 35-degree weather.

The weeds sap, which is found all over the plant, bonds chemically with human skin when exposed

to sunlight and, within 48 hours, leads to inflammation, red colouring and itching, weeping blisters

and eventually black and purplish scars. It’s those flower heads you want to get rid of, Mr. Muzzi

said. I went out, suited up, cut all the flowerheads off and bagged them. Then I nuked the plants

with Round-Up.

Most susceptible to infection are gardeners, campers and children, who have been known to use

the plants large, hollow stems as play telescopes or pea-shooters. If a person takes a weed-whacker

to this stuff, they get the sap all over, Mr. Muzzi said. W hile the weed is on the federal governments

official noxious weeds list, there is apparently no national or provincial strategy in place to stop its

spread. Guy Baillargeon, a biologist with the Canadian Biodiversity Information Facility, called the

weed an emerging problem, not yet a national one. Very few people are aware of it right now, he

added. I am not aware that this species is on any provincial list yet.

Mr. Baillargeon said a federal plan is in the works to deal with invasive species in general, but not

hogweed in particular. I believe the plant has been here long enough that it would now be difficult

to eradicate it, Mr. Baillargeon said. So I don’t expect that things will happen overnight. But we

need to talk about it. A 2005 study of the plants spread in Canada said it was likely to continue for

the next 25 to 100 years with worsening ecological, economic and health effects.

National Post

OTHER PICTURES OF GIANT HOGWEED � IT GROWS ALONG ROADSIDES, DITCHES ETC

Giant Hogweed Leaves Have Jagged Edges As Shown Below

Burns Caused By Giant Hogweed Below