In full colour, there was a map of Canada. Their catalogue designations ... of successfully gardening) in zone 2b. I would quote Hamlet, “To be or not to be, that is the question,” and hope ...

However, the USDA’s map relies solely on extreme temperatures, while Canada’s map takes into account seven factors, making predicting potential zone changes ... has been gardening for about ...

The new USDA map, which is now interactive and highly specific for each area, just makes it official. Many areas of the country are now in a warmer USDA zone than ... or call the gardening hotline ...

That's the word from the U.S. Department of Agriculture, which released a new version of its "Plant Hardiness Zone ... interactive version, available on the web, where you can explore the map ...