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5b Planting calendar for zone 5b

USDA hardiness zone 5b: average annual extreme minimum -15°F to -10°F. 2,880 US ZIP codes fall in this zone.

Freeze dates for zone 5b

Median dates across 809 NOAA weather stations in zone 5b (1991–2020 normals). In zone 5b, the average coldest night of the year falls between -15°F and -10°F.

ThresholdLast spring freeze (median)Typical rangeFirst fall freeze (median)Typical range
36°F (light freeze — tender plants hurt)May 13May 1 – May 31Sep 27Sep 18 – Oct 3
32°F (freeze)May 5Apr 22 – May 27Oct 4Sep 23 – Oct 14
28°F (hard freeze)Apr 25Apr 12 – May 16Oct 15Sep 29 – Oct 26

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

Planting calendar — zone 5b

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··SS
D
T··F····
Garlic·······F····
Potatoes···D········

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

Every crop, zone 5b