Source of Data:  www.worldclimate.comEurope vs. Great Lakes
In general, the climate is more variable in the Great Lakes region than in Europe.  The summers are warmer, and the winters are colder.  The average January temperature in Reykjavik, Iceland, is 31.50 F compared to 26.40 F  in Cleveland!  The climate in Reykjavik is more temperate due to warm ocean currents off the coast.

Some plants which thrive in Europe may need heavy mulching, shade or a sheltered spot to survive the extremes of temperature in the Great Lakes (and much of the US).  Some plants may be impossible to grow in your region.  Before buying a plant, find out which USDA hardiness zones it will grow in.

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