What is meant by the term "plant hardiness zone"?

The term "plant hardiness zone" refers to a classification system that helps gardeners and horticulturists determine which plants are capable of surviving in specific climatic conditions. This system is based on the average annual minimum winter temperatures in a given area, dividing regions into zones that indicate the types of plants that are most likely to thrive in those temperatures.

Each zone is assigned a number, and sometimes a letter, to signify its temperature range, enabling individuals to select plants that are appropriate for their local environment. This is crucial information for anyone involved in gardening or agriculture, as using plants that are not suited to the local climate can lead to poor growth or even plant death, particularly during the colder months. Understanding this classification plays a key role in successful planting and cultivation practices.