I live in Delmont, Pa. What is my true hardiness zone?
Westmoreland County Pennsylvania
USDA changed the hardiness zone map a few years ago which put Westmoreland County in zone 6 instead of zone 5. We have been skeptical of this change and given the temperatures of this winter, we are still in hardiness zone 5. If you want to use plants hardy to zone 6, plant them in a protected spot in the landscape and hope for the best.