Planting in Zone 4a

Here is some general info for USDA zone 4a to help you get started.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-30°F
Highest Expected Low-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Below is a list of planting guides for Zone 4a.