Zone 4A
Zone 4 is a cooler zone and can present unusual and unexpected weather changes. Unfortunately, this zone has one of the shorter growing seasons spanning from late Spring to early Fall.
First Frost:
First frost for Zone 4A is typically mid-September, but can extend into the first week of October.
Last Frost:
Last frost for Zone 4A is typically mid-May, but can extend into first week of June.