A hardiness zone is a geographic area with a similar average minimum temperature. The map is based on the average annual extreme minimum temperature, so people in those areas know which plants can ...

Europe recorded its warmest-ever March with an average land temperature of 6.03 degrees Celsius, 2.41 degrees Celsius higher than the 1991-2020 average for the month, the European Union's climate ...

The U.S. Department of Agriculture (USDA) has a Plant Hardiness Zone Map that divides ... zone reflects a temperature difference of 10 degrees Fahrenheit within the average annual minimum winter ...