Lory Silvia

Usda Plant Zones 2024. Released in november 2023, the updated map was developed by oregon state university’s prism climate group and the usda’s agricultural research service. They are based on the average lowest temperatures, not the lowest ever.

This image from the u.s. Here is how you can use the new usda zone map for your garden and how to know, if in the new version, your hardiness.