The New Plant Hardiness Zone Map

Home / News / Events and Happenings / The New Plant Hardiness Zone Map
boulder co growing zone
Photo via

The Plant Hardiness Zone Map, provided by the United States Department of Agriculture (USDA), serves as an invaluable tool for gardeners, landscapers, and farmers across the nation. It offers a standard reference to understand the climatic conditions ideal for growing specific plants, ensuring healthier landscapes and thriving gardens. The map itself is not a brand new map; it has simply been updated to show more accuracy and detail. The last time that the map was updated was back in 1990.

The USDA Plant Hardiness Zone Map helps elucidate many things and is widely useful to many people. Its benefits are numerous and include:

Guidance for Plant Selection: The map provides clear zones, each representing a specific average annual minimum winter temperature. This aids gardeners in choosing plants most likely to thrive in their specific zone.

Reduced Risk of Plant Loss: Understanding the hardiness zones can save gardeners time, effort, and money by reducing the chances of planting something that won’t survive the winter or will be ill-suited to the summer temperatures.

Planning for Landscape and Garden Projects: Whether you’re a professional landscape artist or a hobbyist gardener, the map helps in planning projects by offering insights into the regional adaptability of plants.

Research and Climate Studies: Besides gardening, the map is useful for researchers to track climate change patterns and study plant evolution in relation to changing climates.