Here is some general info for USDA zone 5b to help you get started.
Average Date of Last Frost (spring) | April 15 |
Average Date of First Frost (fall) | October 15 |
Lowest Expected Low | -15°F |
Highest Expected Low | -10°F |
This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.
Below is a list of planting guides for Zone 5b.
Vegetables
Herbs
Flowers