Zone 1b planting calendar
What to plant in January: zone 1b
A rule-of-thumb starting point for zone 1b: last spring frost around June 15, first fall frost around August 15. Zones are set by winter lows, not frost dates, so two gardens in the same zone can be weeks apart. Measure your ZIP below for dates from your area's own 30-year record.
Typical last frost: June 15
Typical first frost: August 15
Winter lows: -55 to -50 °F
A quiet month in zone 1b
January is a rest-and-plan month here. Use it to order seed, test your soil, repair beds, and map next season's rotation, then jump ahead to February.
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