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Sprout Authority

Zone 3a monthly plan

March planting calendar for zone 3a

These actions use zone 3a's typical frost dates and each crop's extension-sourced planting window.

Last spring frost
May 29
First fall frost
September 5
Exact actions
12

Get dates for your exact ZIP

Zone averages cover wide areas. Your nearest NOAA station gives a more local frost window.

Exact March dates

Planting jobs

Your March checklist

Search a crop or narrow the list by garden action. Dates are shifted from zone 3a's typical frost window.

12 matching actions, with 5 shown first

Start indoors

12
  • Ageratum

    flower

    March 20 to April 3
    0 sources
    • Broccoli

      vegetable

      March 20 to April 3
      0 sources
      • Cabbage

        vegetable

        March 20 to April 3
        0 sources
        • Cauliflower

          vegetable

          March 27 to April 10
          0 sources
          • Celeriac

            vegetable

            March 6 to March 20
            0 sources
            Show 7 more start indoors

            How this checklist is sourced

            USDA defines the hardiness zone, NOAA normals provide the typical frost anchors, and each crop's extension source supplies the planting offset. Broad season-only notes are kept on plant profiles because they do not change from one zone page to another.

            Local conditions vary.