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Understanding Hardiness Zones
By: Admin    July 05 2018 , 03:00 pm
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Category: Climate , Plant Care
“Hardiness” is a term that comes up a lot in crop and flower research. It refers to a plant or crop’s hardiness zone, growing zone, or planting zone. There are different climate zones in which a particular plant can survive. Some plants can survive in very cold zones, very hot zones, moderate zones, or the majority of them. The Zones There are currently 13 zones. Each zone has a 10 degree difference. Within each zone, there are subzones A and B that divide the zone by a 5 degree difference. All of the temperatures that make up the zones are decided by those areas’ average annual minimum winter temperature. The continental United States does not go above zone 11a, which reaches an average 45 degrees. However, Hawaii and Puerto Rico both reach zone 13, achieving average winter temperatures of 70 degrees. On the opposite side of the temperature spectrum, Alaska i...