Using the U.S. climate zones, as defined by the International Energy Conservation Code, she divided citizen scientist and ... with citizen scientists reporting continuous overcast skies. Map ...

With spring on the horizon, many gardeners are preparing for prolonged, hearty growing seasons in their region. The United ...

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 ...

The USDA bases its plant zone maps on average minimum temperature so people in each zone know which plants can best withstand their local weather. For example, a tropical plant that needs 40 ...