Heat tolerance

zone they may in fact not survive through the summer weather. The USDA Hardiness Zone map gives the cold hardiness of the plant. This is great if you are planting a plant from further south that may be cold sensitive. But if you have a plant from further west or north it may survive the cold but not the heat. There is a great web site which will show you a heat zone map. This map will give you a better idea of the heat hardiness of the plant you intend to plant: http://www.ahs.org/pdfs/05_heat_map.pdf

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