5 things you need to know about toxic hogweed

Officials are fighting an uphill battle against a toxic weed as it spreads across Quebec.

Giant hogweed, similar in appearance to a smaller invasive species calledwild parsnip, is sometimes confused with Queen Anne's Lace.

However, the invasive plant species is not your average wildflower.

First discovered in Quebec in 1990, giant hogweed has spread across the province where it hasdestabilized ecosystems, contributed to erosion and created painful rashes for anyone who brushes against it.

The toxins in thesap can create what is known as "phytophotodermatitis" basically an extreme sensitivity to sunlight.

The effects of the toxins are not felt immediately, butonceactivated by UV rays, they can damage skin cells and cause lesions that look similar to burns.

Researchers with Laval University surveyed more than 169 plant colonies, mostly concentratedin the area north of Montreal, and near Gatineau, Trois-Rivres, Quebec City andSherbrooke.

However, their report suggests that number reflects only "a fraction" of Quebec's giant hogweed colonies.

Fortunately, the plant is relatively easy to spot and remove.