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5a Planting calendar for zone 5a

USDA hardiness zone 5a: average annual extreme minimum -20°F to -15°F. 2,426 US ZIP codes fall in this zone.

Freeze dates for zone 5a

Median dates across 747 NOAA weather stations in zone 5a (1991–2020 normals). In zone 5a, the average coldest night of the year falls between -20°F and -15°F.

ThresholdLast spring freeze (median)Typical rangeFirst fall freeze (median)Typical range
36°F (light freeze — tender plants hurt)May 16May 6 – Jun 1Sep 23Sep 15 – Sep 29
32°F (freeze)May 7Apr 27 – May 26Sep 30Sep 21 – Oct 6
28°F (hard freeze)Apr 29Apr 17 – May 17Oct 8Sep 26 – Oct 18

Growing season at 32°F (50% probability): —.

Planting calendar — zone 5a

Cropjanfebmaraprmayjunjulaugsepoctnovdec
Tomatoes··SS
D
T·······
Peppers··S·T·······
Cucumbers···S
D
T·······
Zucchini & Summer Squash···S
D
T·······
Winter Squash & Pumpkins···S
D
T·······
Snap Beans···D···F····
Sweet Corn···D········
Peas···D··F·····
Lettuce···S
D
T··F····
Spinach···D···F····
Carrots···D··F·····
Radishes···D···F····
Broccoli···S
D
T·F·····
Garlic·······F····
Potatoes···D········

S = start seeds indoors · T = transplant outside · D = direct sow · F = fall planting

Every crop, zone 5a