Wednesday, May 23, 2007
The Northern Gardener And Hardiness Zones
I originally saw this in the May issue Traverse Magazine.
The 1990 USDA Hardiness Zone map has been updated and all of the Eastern U.P. is now in Zone 5 whereas a small area around the St. Marys River was in Zone 4 in 1990.
Press release at The National Arbor Day Foundation - New arborday.org Hardiness Zone Map reflects warmer climate
What this means is you can now plant plants that only need to be able to survive to -20F instead of -30F.
Labels: climate, gardening, trees
