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USDA Zone 9b planting calendar

In USDA Zone 9b, the average last spring frost is around 02/02 and the first fall frost around 12/08, giving roughly a 317-day growing season. Plant cool-season crops from late winter; warm-season crops after the last frost.
Last frost ~02/02 First frost ~12/08 ~317-day season 61 NOAA stations

Frost dates are the median across 61 NOAA weather stations in Zone 9b (1991–2020 normals, 50% probability). Range: last frost 01/17–02/27, first frost 01/09–12/25. For your exact town, use the ZIP tool.

The year in Zone 9b

Jan32 tasksFeb21 tasksMar1 taskApr—May—Jun—Jul1 taskAug5 tasksSep8 tasksOct3 tasksNov1 taskDec1 task

What to plant now (August)

Broccoli
Sow for fall harvest
Cabbage
Sow for fall harvest
Lettuce
Sow for fall harvest
Carrots
Sow for fall harvest
Collards
Sow for fall harvest

All crops in Zone 9b

CropStart indoorsTransplant / sowSow for fall
TomatoesJanuary 2 – January 9February 6 – February 20—
PeppersDecember 22February 9 – February 23—
EggplantDecember 26 – January 9February 13 – February 27—
BasilJanuary 2February 6 – February 20—
BroccoliDecember 15 – December 22January 5 – January 19August 29 – September 12
CabbageNovember 24 – December 8December 29 – January 12July 20 – August 3
CauliflowerDecember 8 – December 22January 12 – January 26September 3 – September 17
Brussels SproutsDecember 1 – December 15January 5 – January 19—
KaleNovember 24 – December 8December 29 – January 12September 8 – September 22
LettuceDecember 5 – December 12January 2 – January 16August 24 – September 7
Spinach—December 26 – January 9October 3 – October 17
OnionsOctober 27 – November 10December 29 – January 12—
LeeksNovember 3 – November 17January 5 – January 19—
Swiss ChardDecember 8 – December 15January 12 – January 26—
Radishes—January 5 – January 19October 18 – November 1
Turnips—January 5 – January 19September 18 – October 2
Beets—January 12 – January 26September 13 – September 27
Carrots—January 26 – February 9August 14 – August 28
Peas—December 22 – January 5September 8 – September 22
Beans—February 2 – February 16—
Sweet Corn—February 2 – February 16—
CucumbersJanuary 16 – January 23February 6 – February 20—
Summer Squash & ZucchiniJanuary 19 – January 26February 9 – February 23—
Winter SquashJanuary 19 – January 26February 9 – February 23—
PumpkinsJanuary 19 – January 26February 9 – February 23—
MelonsJanuary 19 – January 26February 9 – February 23—
OkraJanuary 12 – January 26February 16 – March 2—
Potatoes—January 16 – January 30—
ParsleyNovember 7 – November 14January 9 – January 23—
CollardsNovember 24 – December 8December 29 – January 12August 24 – September 7
WatermelonJanuary 19 – January 26February 9 – February 23—
Sweet Potatoes—February 6 – February 20—
CeleryNovember 17 – December 1February 2 – February 16—
KohlrabiNovember 24 – December 8December 29 – January 12—
ArtichokeNovember 10 – December 8January 26 – February 9—
Asparagus—January 2 – January 16—
Cilantro—February 2 – February 16—
Dill—January 16 – January 30—
OreganoDecember 1 – December 15February 2 – February 16—
SageDecember 15 – December 29February 2 – February 16—
ThymeDecember 1 – December 15February 2 – February 16—

Fall bulb planting in Zone 9b

Planted in fall after the first frost, for harvest the following summer — a separate calendar from the spring/fall-harvest crops above.

CropPlant cloves (fall)Harvest
GarlicDecember 12 – December 26Following summer

Last verified 2026-08-28. 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.