Dangerous Plant Species in the Area

Giant Hogweed

The stems and leaves of this plant are covered with small hairs coated with poisonous sap.  Even the slightest touch can cause painful blisters and severe skin irritation. The symptoms can take a couple of days to develop with the skin becoming highly photosensitive producing large watery blisters; however the effects can be long lasting, with contact resulting in recurrent dermatitis. This is a particular concern for small children who may use the stems as pea-shooters or pretend telescopes resulting in horrific injuries.

What does Hogweed Look Like?

• very tall, 8-14 feet
• Stems have rigid hairs, purple blotches and are hollow
• Flower clusters up to 2 ft across occurring from mid June to late July
• Has a reddish purple stem with fine spines that make it appear furry

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Wild Parsnip

Is another weed that should also be avoided. The effects are similar to those associated with Giant Hog Weed. Irritation can occur if your skin contacts the plant’s fluids and is then exposed to sunlight.  Contact with the eyes can cause temporary blindness and in rare cases permanent blindness.

Wild parsnip can be found within uncultivated land, roadside ditches, parklands, nature trails and sports fields as well as on and around residential properties.

What Does Wild Parsnip Look Like?

• smells like parsnip
• stands 20-60 inches high, branched, hollow stem
• small yellow clustered flowers 
• flowers from late June into late fall (resembles dill)

Being able to readily identify wild parsnip and giant hogweed will minimize accidental exposure to these plants and the painful results that follow. 

Anyone having information on specific locations where these weeds are posing a public risk should contact the Invading Species Hotline at 1-800-563-7711. You will be asked to send in photos for identification.  DO NOT touch, cut or collect parts of the plant. 

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The Temagami Medical Centre and Family Health Team ...
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