Zone 1a planting calendar

What to plant in February: zone 1a

A rule-of-thumb starting point for zone 1a: last spring frost around June 20, first fall frost around August 10. 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.

These are zone-average dates. Check an area-level frost estimate from thirty years of nearby weather history and this calendar retimes itself.
Typical last frost: June 20
Typical first frost: August 10
Winter lows: -60 to -55 °F
Zone 1a Almanac. What growers here actually recorded: sowing weeks, days to first pick, and yields.

Plan & order

  • Inventory and order seedaround Feb 28

    Sort what you already have, toss anything over 3 years old, and order early while varieties are in stock.

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