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Canada zones

USDA hardiness zones (a proxy — Canada has no native zone map in this database), explained.

The USDA scale rates a plant by the coldest average winter temperature it survives, zone 1 (coldest) to 13 (warmest). Canada has no native hardiness map in this database, so USDA zones stand in as the nearest working proxy.

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13 zones in this system currently have too few matching plants to list on their own.

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