In­va­sion of the gi­ant hog­weed

Canadian Wildlife - - DISPATCHES -

The gov­ern­ment is warn­ing peo­ple to be­ware this in­va­sive species, but gi­ant hog­weed (Her­a­cleum man­tegazz­ianum) has ef­fects on the en­vi­ron­ment too. Its sap is toxic to hu­mans and can burn or even blind them, but this ex­tra-tall weed also does dam­age to ecosys­tems and erodes river banks by crowd­ing out smaller na­tive plants.

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