Texas sage plants from Southwest Texas freeze ... We ought to consider our area to be Hardiness Zone 7. That is my personal opinion. It does not agree with the two most recent USDA Zone maps ...
The hardiness zones map that the USDA created to show us the average coldest ... These scattered areas include southern Florida and the Keys, southern Texas, southern California and most of Hawaii.
For example, Seattle, Washington, and the city of Austin, Texas, are both in the USDA hardiness zone 9a because the map is a measure of the coldest temperature a plant can handle. But they're vastly ...