Voracious caterpillars threatening Ontario's trees

By Hallie Cotnam, CBC News Ottawa

They're only about four to six centimetres long, but gypsy moth caterpillars are a massive threat to Ontario's forest cover.

Scientists are warning that 2021 is shaping up to be a bumper year for the invasive species, brought to North America around 1860 by a French entomologist who hoped to cross-breed them with silkworms. 

The good news is that landowners can help battle the bugs using burlap and soapy water.

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