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USDA Zone 6b planting calendar

In USDA Zone 6b, the average last spring frost is around 04/23 and the first fall frost around 10/20, giving roughly a 179-day growing season. Plant cool-season crops from late winter; warm-season crops after the last frost.
Last frost ~04/23 First frost ~10/20 ~179-day season 126 NOAA stations

Frost dates are the median across 126 NOAA weather stations in Zone 6b (1991–2020 normals, 50% probability). Range: last frost 04/10–05/13, first frost 09/28–10/28. For your exact town, use the ZIP tool.

The year in Zone 6b

What to plant now (July)

Broccoli
Sow for fall harvest
Cauliflower
Sow for fall harvest
Kale
Sow for fall harvest
Lettuce
Sow for fall harvest
Swiss Chard
Sow for fall harvest
Turnips
Sow for fall harvest
Beets
Sow for fall harvest
Carrots
Sow for fall harvest
Peas
Sow for fall harvest

All crops in Zone 6b

CropStart indoorsTransplant / sowSow for fall
TomatoesMarch 23 – March 30April 27 – May 11
PeppersMarch 12April 30 – May 14
EggplantMarch 16 – March 30May 4 – May 18
BasilMarch 23April 27 – May 11
BroccoliMarch 5 – March 12March 26 – April 9July 11 – July 25
CabbageFebruary 12 – February 26March 19 – April 2June 1 – June 15
CauliflowerFebruary 26 – March 12April 2 – April 16July 16 – July 30
Brussels SproutsFebruary 19 – March 5March 26 – April 9June 1 – June 15
KaleFebruary 12 – February 26March 19 – April 2July 21 – August 4
LettuceFebruary 23 – March 2March 23 – April 6July 6 – July 20
SpinachMarch 16 – March 30August 15 – August 29
OnionsJanuary 15 – January 29March 19 – April 2
LeeksJanuary 22 – February 5March 26 – April 9
Swiss ChardFebruary 26 – March 5April 2 – April 16July 31 – August 14
RadishesMarch 26 – April 9August 30 – September 13
TurnipsMarch 26 – April 9July 31 – August 14
BeetsApril 2 – April 16July 26 – August 9
CarrotsApril 16 – April 30June 26 – July 10
PeasMarch 12 – March 26July 21 – August 4
BeansApril 23 – May 7
Sweet CornApril 23 – May 7
CucumbersApril 6 – April 13April 27 – May 11
Summer Squash & ZucchiniApril 9 – April 16April 30 – May 14
Winter SquashApril 9 – April 16April 30 – May 14
PumpkinsApril 9 – April 16April 30 – May 14
MelonsApril 9 – April 16April 30 – May 14
OkraApril 2 – April 16May 7 – May 21
PotatoesApril 6 – April 20
ParsleyJanuary 26 – February 2March 30 – April 13

Last verified 2026-07-16. Frost: NOAA NCEI 1991–2020 Climate Normals. Zone: USDA 2023 Plant Hardiness Zone Map (PRISM-derived). Planting rules: UNH Extension, Johnny's Selected Seeds, UGA Extension.