Can you use USDA zones around the world?

The short answer to this question is yes, but a little work is involved. The zones of the Ministry of Agriculture of the United States, referred to as the USDA zones, have been designed for North America and USDA officially publishes only zones for North America. However, many nations have developed similar hardness zone systems with the same numbering system, which allows you to generalize references to USDA zones to plants and garden books to other parts of the world. Some passionate gardeners also developed gardening maps for their own regions, which were classified by the USDA zone. The high number zones are warm, while the low number zones are cold. When someone says that the plant is, for example, "resistant in the USDA zone five", it means that it can handle very cold winter weather, while a plant that grows only in USDA 10 and 11 zones would not be able to survive in zone five.

If you consider the average minimum temperature to be the only importantOst, you can use USDA zones around the world. For example, if you are gardening in Namibia, you can find an average minimum temperature in your community and then find the USDA zone that corresponds to this temperature. Plants that are said to grow in this zone could theoretically grow in your garden.

However, because USDA zones look at average minimum temperatures, often missing summer temperatures that are crucial. Regions with the same average minimum temperature may have summer temperatures that differ, so the plants that are doing well, say, Michigan, will not grow in England. In addition, USDA zones do not take into account other important problems such as annual precipitation, wind, soil conditions, etc. G is more of a rough guide than a hard and fast set of rules.

If you want to generalize the USDA zones in your area, you will want to know which temperature diameters correspond to which zones, so they are here:
zone 1 below -50 degrees Fahrenheit (-45.6 degrees Celsius) zone 2a -50 to -45 degrees Fahrenheit (-42.8 to -45.5 degrees Celsius) zone 2b -45 to -40 degrees Fahrenheit (-40 to -42.7 degrees Celsius) zone 3a -40 to -35 degrees Fahrenheit (-37.3 to -39.9 ° C) 3B zone -35 to -30 degrees Fahrenheit (-34.5 to -37.2 ° C) zone 4a -30 to -25 degrees Fahrenheit (-31.7 to -34.4 ° C) 4b zone -25 to -20 degrees Fahrenheit (-28.9 to -31.6 degrees Celsius) zone 5a -20 to -15 degrees Fahrenheit (-26.2-28.8 degrees Celsius) Zone 5b -15 to -10 degrees Fahrenheit (-23.4 to -26.1 ° C) zone 6a -10 to -5 degrees Fahrenheit (-20.6 to -23.3 degrees Celsius) zone 6b -5 to 0 degrees Fahrenheit (-17.8 to -20.5 degrees Celsius) zone 7a 0 to 5 degreesFahrenheit (-15 to -17.7 degrees Celsius) zone 7b 5 to 10 degrees Fahrenheit (-12.3 to -14.9 degrees Celsius) zone 8a 10 to 15 degrees Fahrenheit (-9.5 to -12.2 ° C) zone 8b 15 to 20 degrees Fahrenheit (-6.7 to -9.4 ° C) zone 9a 20 to 25 degrees Fahrenheit (-3.9 to -6.6 degrees Celsius) zone 9b 25 to 30 degrees Fahrenheit (-1.2 to -3.8 ° C) zone 10a 30 to 35 degrees Fahrenheit (1.6 to -1.1 degrees Celsius) 10b zone 35 to 40 degrees Fahrenheit (4.4 to 1.7 degrees Celsius) zone 11 over 40 degrees Fahrenheit (over 4.4 degrees Celsius)
Happy Gardening!