Wednesday, January 25, 2012

In the “zone”

I was surprised to learn this morning that the USDA has released an updated Plant Hardiness Zone map for the United States. This is the map that plant growers, garden centers, and landscapers use to determine the cold hardiness of plants, the average minimum temperature for an area. Much of Richmond and surrounding localities in this new map are still in zone 7 (0 to 5 degrees F.) which is no change from the older map issued in 1990. Most perennials, shrubs, and trees used in the Mid-Atlantic states are hardy to at least zone 6 (-5 to 0 degrees F), so keep on planting!

1 comment:

  1. A writer with Sunset mentioned that the latest USDA zone map was finished a few years ago, but not released until now.

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