Hardiness Zones
Photo courtest USDAgov/Flickr
Here’s a good interactive hardiness zone map from the US Department of Agriculture.
It lets you put in your zip code and get detailed information about your area, including the sub-designation for your hardiness zone. For example, in Blacksburg where I live, I’m in zone 6a, where someone in Roanoke may be in zone 7a.
The zip code input is kind of hard to see; it’s located at the very top of the page.
The hardiness zones are based on the lowest average winter temperature for the area.
January 17, 2013 - 7:17 AM
Interesting that Roanoke’s last frost date is between April 11 and April 20 – which jives with my observations the last 5-10 years – whereas the VA Tech Co-op still states May 5. Well, I guess I’ll go with the April dates, and take the chance that I’ll either need to cover my plants or bring those in pots inside.
David