Take preventative measures to protect frost-sensitive plants and trees.
Frost may damage some crops in frost-prone areas.
Patchy frost is expected tonight into Thursday morning under clear skies.
Frost advisories are issued when temperatures are expected to reach the freezing mark during the growing season, leading to potential damage and destruction to plants and crops.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm.