New Gardening Zones 2024. The map was updated for the first time in a decade, and it shows the impact. Department of agriculture (usda) released a new version of its plant hardiness zone map (phzm), updating this valuable tool for gardeners and researchers for.
The new hardiness zone map released this year has been created using gis (geographic information system) to examine hardiness zones at a much finer scale than. The new map—jointly developed by usda’s agricultural research service (ars) and oregon state university’s.