Viewing post #1266872 by sooby

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sooby

Sep 8, 2016 5:42 PM CST

Name: Sue
Ontario, Canada (Zone 4b)

The lowest recorded winter temperature at Mariehamn is -26 degrees F. That would be equivalent to USDA Zone 4 in years where it got that low. On that basis the answer would usually be no for Hydrangea macrophylla.

Weather stats:
http://www.weatherbase.com/wea...

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