Here's what you need to know about gardening in USDA plant hardiness zones 6a and 6b. The temperatures for each zone are separated by a difference of 10°F. Zone 6 is 10°F colder than Zone 7 ...

This is the type of winter extreme we would expect in zones 7a to 6b. Because of this, some of our marginal plants might have been adversely affected. By marginal plants, I mean those plants whose ...