I live at latitude 40 degrees,59'49" and longitude 79 degrees, 49'53". Is this Zone 6 or Zone 7?
Or -- like many of us -- if you live on the edge of 2 zones, take heed of both.
I live on the border of zones 3 & 2 ... sometimes my weather comes out of the west so I look at zone 3. Sometimes -- like last week's monsoon -- my weather is out of the south, so I look at zone 2.