What does it mean to be in zone 7a?
Each usda hardiness zone has 10 degrees of minimum average temperature difference and is divided into two sections, a and b. zones 7a and 7b both have a medium-length growing season. Zone 7a’s minimum average temperature is 0 to 5 degrees, and zone 7b’s minimum average temperature is 5 to 10 degrees. Usda plant hardiness map: zone 1 is the coldest; zone 11 is the warmest. The usda plant hardiness zone map helps gardeners determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10-degree f zones.Cold Hardiness zones are based on the average annual minimum temperature in a given area of the country, with USDA Zone 1 being the coldest at minus 50 degrees F and USDA Zone 11 the warmest at above 40 degrees F.The average low temperatures for zone 1 are -60 to -50, for zone 2 are -50 to -40, for zone 3 are -40 to -30, for zone 4 are -30 to -20, for zone 5 are -20 to -10, for zone 6 are -10 to 0, for zone 7 are 0 to 10, for zone 8 are 10 to 20, for zone 9 are 20 to 30, for zone 10 are 30 to 40, for zone 11 are 40 to 50, for .The average minimum winter temperature in Zone 10 is thirty to forty degrees Fahrenheit, making it ideal for winter gardening. Zone 10 of the map includes equatorial parts of North America, including southern California, southern Florida, and Hawaii.
What is the coldest USDA zone?
Zones range from Zone 1 (coldest) to Zone 13 (warmest). USDA zones are based on the average annual extreme minimum winter temperature. Most places in the UK are USDA zone 8. Most of the coast is zone 9, as is London. Zone 7 is the coldest inland Northern and Scottish areas.All of the UK lies within USDA planting zones 6-9. These planting zones are based on average winter temperatures. Few areas in the UK are zone 6, where winter temperatures can drop below minus 17. Celsius. Few are in zone 7, where temperatures drop below minus 12. C.