hardiness zones

Question

Why are the map and the legend so small they cannot be read and understood? And the maps themselves are problematic.

Answer 1

Try this link: http://planthardiness.ars.usda.gov/phzmweb/interactivemap.aspx
There is a bar on the far left to increase the size as well as the ability to search by zip code. Look for the box just above the map to the left.