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Zone 10b Planting Calendar

Zone 10b has an average minimum temperature range of 35°F to 40°F. The average last spring frost is around January 1 and the first fall frost is around December 31, giving you approximately 364 days in the growing season.

There are 175 plants in our database that grow well in Zone 10b.

Zone 10b Year-round
365 days
❄
Last Spring Frost No frost
➔ 365 growing days ➔
❄
First Fall Frost No frost
Zone 10b Year-Round Growing

No frost countdown needed. Frost is exceptional in this area — most years record zero frost days. Plan around heat and rainfall instead.

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States That Include Zone 10b

Many states span multiple zones. The states highlighted below contain areas classified as Zone 10b.

AL — Zone 7b AL AR — Zone 7b AR AZ — Zone 8a AZ CA — Zone 9a CA CO — Zone 5a CO CT — Zone 6b CT DE — Zone 7a DE FL — Zone 9a FL GA — Zone 7b GA IA — Zone 5a IA ID — Zone 5b ID IL — Zone 5b IL IN — Zone 6a IN KS — Zone 6a KS KY — Zone 6b KY LA — Zone 8b LA MA — Zone 6a MA MD — Zone 7a MD ME — Zone 4b ME MI — Zone 5b MI MN — Zone 4a MN MO — Zone 6a MO MS — Zone 8a MS MT — Zone 4b MT NC — Zone 7a NC ND — Zone 3b ND NE — Zone 5a NE NH — Zone 5a NH NJ — Zone 7a NJ NM — Zone 6b NM NV — Zone 6b NV NY — Zone 5b NY OH — Zone 6a OH OK — Zone 7a OK OR — Zone 7a OR PA — Zone 6a PA RI — Zone 6b RI SC — Zone 8a SC SD — Zone 4a SD TN — Zone 7a TN TX — Zone 8a TX UT — Zone 5b UT VA — Zone 7a VA VT — Zone 4b VT WA — Zone 7a WA WI — Zone 4b WI WV — Zone 6a WV WY — Zone 4a WY AK — Zone 2a AK HI — Zone 11a HI
Zones: 1 2 3 4 5 6 7 8 9 10 11

Growing Season Comparison

What to Plant Right Now in Zone 10b

Based on June 2026 planting windows.

Ageratum Harvest Jan 15 – Aug 13 Alpine Strawberries Harvest Apr 16 – Jul 30 Anise Harvest Mar 26 – Jun 11 Artichoke Harvest May 21 – Jul 30 Begonias Harvest Jan 22 – Sep 17 Belgian Endive Harvest Apr 23 – Jun 18 Cardoon Harvest May 21 – Jul 2 Celosia Harvest Jan 22 – Sep 10

See all June plantings →

All Planting Windows at a Glance

This chart shows when to start, transplant, sow, and harvest every plant in Zone 10b.

Vegetables for Zone 10b

Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Acorn Squash Dec 4 Jan 1 Jan 8 Apr 2 – May 7 80–100
Amaranth Nov 20 Jan 1 Jan 8 Apr 9 – May 28 90–120
Artichoke — — Jan 15 May 21 – Jul 30 120–180
Arugula Dec 4 Dec 11 Jan 1 Feb 5 – Apr 9 30–50
Asparagus — — Jan 15 — 730–1095
Beets — Dec 11 — Feb 5 – Mar 5 50–70
Belgian Endive Dec 4 Dec 11 Jan 1 Apr 23 – Jun 18 110–150
Bitter Melon Nov 20 Jan 1 Jan 8 Mar 12 – Apr 23 60–90
Black Beans — Jan 8 — Apr 9 – May 28 90–120
Bok Choy Dec 4 Dec 11 Jan 1 Feb 12 – Mar 19 40–60
Broccoli Dec 4 Dec 11 Jan 1 Mar 5 – Apr 16 60–90
Broccoli Rabe Dec 4 Dec 11 Jan 1 Feb 12 – Mar 19 40–60
Brussels Sprouts Dec 4 Dec 11 Jan 1 Apr 2 – May 28 90–130
Butternut Squash Dec 4 Jan 1 Jan 8 Apr 9 – May 14 85–110
Cabbage Dec 4 Dec 11 Jan 1 Mar 5 – Apr 30 60–100
Calabash Nov 20 Jan 1 Jan 8 Apr 2 – May 28 80–120
Cardoon — — Jan 15 May 21 – Jul 2 120–150
Carrots — Dec 11 — Feb 12 – Mar 19 60–80
Cauliflower Dec 4 Dec 11 Jan 1 Feb 26 – Apr 30 55–100
Celery Dec 4 Dec 11 Jan 1 Mar 26 – May 21 80–120
Celtuce Dec 4 Dec 11 Jan 1 Mar 5 – Apr 16 60–90
Chard Dec 4 Dec 11 Jan 1 Feb 26 – Apr 16 50–60
Chayote Nov 20 Jan 1 Jan 8 May 14 – Jul 23 120–180
Chickpeas Dec 4 Dec 11 Jan 1 Mar 26 – May 7 80–110
Chicory Dec 4 Dec 11 Jan 1 Mar 5 – Apr 16 60–85
Chinese Cabbage Dec 4 Dec 11 Jan 1 Feb 26 – Mar 26 50–70
Christmas Lima Beans Nov 20 Jan 1 Jan 8 Apr 2 – May 7 80–100
Collard Greens Dec 4 Dec 11 Jan 1 Feb 26 – Apr 30 55–75
Corn — Jan 8 — Mar 12 – May 7 60–100
Cowpeas — Jan 8 — Mar 12 – Apr 23 60–90
Cress Dec 4 Dec 11 Jan 1 Jan 15 – Feb 5 14–21
Crookneck Squash Dec 4 Jan 1 Jan 8 Feb 26 – Mar 26 45–60
Cucumber Dec 4 Jan 1 Jan 8 Mar 5 – Apr 30 50–70
Daikon — Dec 11 — Feb 5 – Mar 5 50–70
Delicata Squash Dec 4 Jan 1 Jan 8 Apr 2 – May 7 80–100
Edamame — Jan 8 — Mar 26 – May 7 75–100
Eggplant Nov 20 Jan 1 Jan 8 Mar 19 – May 21 65–85
Endive Dec 4 Dec 11 Jan 1 Feb 19 – Mar 26 45–65
Escarole Dec 4 Dec 11 Jan 1 Feb 26 – Mar 26 50–70
Fava Beans Dec 4 Dec 11 Jan 1 Mar 19 – Apr 30 75–100
Fennel Nov 20 Jan 1 Jan 8 Mar 12 – Apr 23 60–90
Ginger Nov 20 Jan 1 Jan 8 Sep 10 – Nov 19 240–300
Green Beans — Jan 8 — Mar 5 – Apr 30 50–65
Hot Peppers Nov 20 Jan 1 Jan 8 Mar 19 – Jun 25 70–120
Hubbard Squash Dec 4 Jan 1 Jan 8 Apr 23 – May 28 100–120
Jicama Nov 20 Jan 1 Jan 8 May 14 – Jul 23 120–180
Kabocha Dec 4 Jan 1 Jan 8 Apr 9 – May 7 85–100
Kai Lan Dec 4 Dec 11 Jan 1 Feb 19 – Mar 19 45–60
Kale Dec 4 Dec 11 Jan 1 Feb 26 – Apr 23 50–70
Kidney Beans — Jan 8 — Apr 9 – May 14 85–110
Kohlrabi Dec 4 Dec 11 Jan 1 Feb 19 – Mar 26 45–65
Komatsuna Dec 4 Dec 11 Jan 1 Feb 5 – Mar 12 35–50
Leeks Dec 4 Dec 11 Jan 1 Apr 2 – Jun 18 90–150
Lentils Dec 4 Dec 11 Jan 1 Mar 26 – May 7 80–110
Lettuce Dec 4 Dec 11 Jan 1 Feb 5 – Apr 16 30–60
Lima Beans — Jan 8 — Mar 12 – Apr 23 60–90
Loofah Nov 20 Jan 1 Jan 8 Apr 23 – Jun 25 100–150
Luffa Nov 20 Jan 1 Jan 8 Apr 9 – Jun 25 90–150
Mache Dec 4 Dec 11 Jan 1 Feb 12 – Mar 19 40–60
Malabar Spinach Nov 20 Jan 1 Jan 8 Mar 5 – Apr 2 55–70
Melon Dec 4 Jan 1 Jan 8 Mar 19 – May 7 70–100
Microgreens Dec 4 Dec 11 Jan 1 Jan 8 – Feb 5 7–21
Mizuna Dec 4 Dec 11 Jan 1 Feb 5 – Mar 5 30–45
Mustard Greens Dec 4 Dec 11 Jan 1 Feb 5 – Apr 9 30–50
Napa Cabbage Dec 4 Dec 11 Jan 1 Feb 26 – Apr 2 55–75
New Zealand Spinach Nov 20 Jan 1 Jan 8 Mar 5 – Apr 2 55–70
Okra Nov 20 Jan 1 Jan 8 Mar 5 – Apr 30 50–65
Onion Dec 4 Dec 11 Jan 1 Apr 2 – May 21 90–120
Pac Choi Dec 4 Dec 11 Jan 1 Feb 12 – Mar 12 40–55
Patty Pan Squash Dec 4 Jan 1 Jan 8 Feb 26 – Mar 26 45–60
Peas Dec 4 Dec 11 Jan 1 Feb 26 – Apr 23 55–70
Peppers Nov 20 Jan 1 Jan 8 Mar 12 – May 21 60–90
Pole Beans Nov 20 Jan 1 Jan 8 Mar 5 – Apr 30 55–70
Potatoes Nov 20 Jan 1 Jan 8 Mar 19 – May 28 70–120
Pumpkin Dec 4 Jan 1 Jan 8 Apr 9 – May 28 85–120
Purslane Dec 4 Dec 11 Jan 1 Feb 12 – Mar 19 40–60
Radicchio Dec 4 Dec 11 Jan 1 Mar 5 – Apr 9 60–80
Radish — Dec 11 — Jan 8 – Jan 29 22–35
Romanesco Dec 4 Dec 11 Jan 1 Mar 19 – Apr 30 75–100
Savoy Cabbage Dec 4 Dec 11 Jan 1 Mar 12 – May 7 70–110
Scallions Dec 4 Dec 11 Jan 1 Feb 26 – Mar 26 50–70
Scarlet Runner Beans Nov 20 Jan 1 Jan 8 Mar 12 – Apr 16 60–80
Shallot Dec 4 Dec 11 Jan 1 Apr 2 – May 21 90–120
Shiso Nov 20 Jan 8 Jan 8 Mar 5 – Apr 30 50–70
Snap Peas Nov 20 Jan 1 Jan 8 Mar 5 – Apr 30 55–70
Snow Peas Dec 4 Dec 11 Jan 1 Feb 26 – Apr 23 50–65
Soybeans — Jan 8 — Apr 2 – May 28 80–120
Spaghetti Squash Dec 4 Jan 1 Jan 8 Apr 9 – May 7 85–100
Spinach Dec 4 Dec 11 Jan 1 Feb 5 – Apr 9 35–50
Squash (Summer) Dec 4 Jan 1 Jan 8 Feb 26 – Apr 30 45–65
Squash (Winter) Dec 4 Jan 1 Jan 8 Apr 2 – May 28 80–120
Sweet Corn — Jan 8 — Mar 12 – Apr 23 60–90
Sweet Potatoes Nov 20 Jan 1 Jan 8 Apr 9 – May 28 90–120
Tatsoi Dec 4 Dec 11 Jan 1 Feb 5 – Mar 12 35–50
Tomatillo Nov 20 Jan 1 Jan 8 Mar 12 – May 21 60–85
Tomatoes Nov 20 Jan 1 Jan 8 Mar 12 – May 21 60–85
Turmeric Nov 20 Jan 1 Jan 8 Sep 10 – Nov 19 240–300
Turnip — Dec 11 — Jan 22 – Feb 26 40–60
Watercress Dec 4 Dec 11 Jan 1 Feb 12 – Mar 19 40–60
Watermelon Dec 4 Jan 1 Jan 8 Mar 19 – May 7 70–100
Wax Beans — Jan 8 — Mar 5 – Apr 30 50–65
Winter Melon Nov 20 Jan 1 Jan 8 Apr 9 – May 28 90–120
Yam Nov 20 Jan 1 Jan 8 Jul 9 – Dec 24 180–330
Yard Long Beans Nov 20 Jan 1 Jan 8 Mar 5 – Apr 16 55–80
Zucchini Dec 4 Jan 1 Jan 8 Feb 26 – Apr 23 45–60

Fruits for Zone 10b

Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Alpine Strawberries — — Jan 15 Apr 16 – Jul 30 90–180
Blackberries — — Jan 15 — 365–730
Boysenberries — — Jan 15 — 365–730
Cantaloupe — — Jan 15 Mar 26 – Apr 30 70–90
Che Fruit — — Jan 15 — 1095–1825
Dragon Fruit — — Jan 15 — 365–730
Figs — — Jan 15 — 730–1825
Goji Berries — — Jan 15 — 730–1095
Grapes — — Jan 15 — 730–1095
Ground Cherry — — Jan 15 Mar 26 – May 21 65–80
Guava — — Jan 15 — 365–730
Honeydew — — Jan 15 Apr 9 – May 21 80–110
Loquat — — Jan 15 — 730–1825
Passion Fruit — — Jan 15 — 365–545
Pomegranate — — Jan 15 — 730–1095
Strawberries — — Jan 15 Apr 16 – Jan 14 90–365

Herbs for Zone 10b

Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Anise Dec 4 Dec 11 Dec 25 Mar 26 – Jun 11 90–120
Basil Nov 20 Jan 8 Jan 8 Mar 5 – May 7 50–75
Borage Dec 4 Dec 11 Dec 25 Feb 19 – Apr 9 50–60
Chervil Dec 4 Dec 11 Dec 25 Feb 5 – Apr 9 40–60
Chives — — Jan 8 Mar 12 – May 21 60–90
Cilantro Dec 4 Dec 11 Dec 25 Feb 5 – Apr 9 40–60
Cumin Dec 4 Dec 11 Dec 25 Apr 9 – Jun 11 100–120
Dill Dec 4 Dec 11 Dec 25 Feb 5 – Apr 9 40–60
Epazote Nov 20 Jan 8 Jan 8 Feb 26 – Apr 23 45–60
Fennel (herb) Dec 4 Dec 11 Dec 25 Feb 26 – May 7 60–90
Garlic Chives — — Jan 8 Mar 12 – May 21 60–90
Horehound — — Jan 8 Mar 26 – May 21 75–90
Lemon Verbena Nov 20 Jan 8 Jan 8 Mar 12 – May 21 60–90
Lemongrass Nov 20 Jan 8 Jan 8 Mar 26 – Jun 25 75–120
Marjoram — — Jan 8 Mar 12 – May 21 60–90
Mint — — Jan 8 Mar 12 – May 21 60–90
Oregano — — Jan 8 Mar 12 – May 21 60–90
Parsley Dec 4 Dec 11 Dec 25 Feb 26 – Apr 30 60–80
Rosemary — — Jan 8 Apr 2 – Aug 20 80–180
Sage — — Jan 8 Mar 26 – May 21 75–90
Savory — — Jan 8 Mar 5 – Apr 30 50–70
Stevia Nov 20 Jan 8 Jan 8 Mar 12 – May 21 60–90
Thai Basil Nov 20 Jan 8 Jan 8 Mar 5 – May 7 50–75

Flowers for Zone 10b

Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Ageratum Nov 20 Nov 20 Nov 20 Jan 15 – Aug 13 60–75
Anemones — — — Nov 19 – Dec 17 90–120
Bachelor's Button — Oct 16 Nov 13 Jan 8 – Apr 16 60–90
Begonias Oct 23 — Nov 13 Jan 22 – Sep 17 70–90
Calendula — Oct 16 Nov 13 Dec 25 – Apr 2 50–70
California Poppy — — — Dec 3 – Feb 25 60–90
Celosia Dec 4 Nov 20 Nov 20 Jan 22 – Sep 10 60–90
Cosmos Dec 4 Nov 13 Nov 13 Jan 22 – Aug 20 60–90
Dahlias — Jan 1 Jan 1 Mar 12 – Oct 22 70–120
Daylily Nov 20 — Nov 27 Feb 5 – Sep 3 60–90
Dianthus Nov 6 Oct 16 Oct 16 Dec 4 – Jan 8 60–80
Freesia — — — Nov 19 – Dec 24 84–112
Gaillardia (Blanket Flower) Nov 27 Nov 27 Nov 27 Feb 5 – Aug 6 70–100
Geraniums Oct 23 — Nov 13 Jan 22 – Sep 17 70–100
Gladiolus — Jan 1 Jan 1 Mar 12 – Oct 22 70–100
Impatiens Nov 6 — Nov 20 Jan 29 – Aug 27 60–75
Larkspur — — — Jan 14 – Mar 11 60–90
Marigolds Dec 4 Nov 20 Nov 20 Jan 15 – Aug 13 50–70
Nasturtium Dec 4 Nov 13 Nov 13 Jan 8 – Aug 20 55–65
Pansy — — Nov 13 Dec 25 – Mar 5 70–90
Petunia Nov 6 — Nov 20 Jan 29 – Aug 13 70–90
Portulaca Dec 4 Nov 20 Nov 20 Jan 8 – Aug 27 50–70
Ranunculus — — — Nov 19 – Dec 17 90–120
Roses Nov 6 — Nov 27 Feb 5 – Sep 3 90–180
Salvia Nov 6 — Nov 13 Jan 22 – Aug 20 70–90
Sedum (Stonecrop) Nov 20 — Nov 27 Mar 19 – Apr 30 60–90
Snapdragon — Oct 16 Nov 13 Jan 15 – Jun 25 70–100
Sunflower Dec 11 Nov 13 Nov 13 Feb 5 – Aug 20 70–100
Sweet Alyssum — Oct 16 Nov 13 Dec 11 – Mar 5 45–60
Vinca (Annual) Oct 23 — Nov 13 Jan 22 – Sep 17 70–90
Zinnia Dec 4 Nov 13 Nov 13 Jan 22 – Aug 20 60–70
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Recommended for Your Garden

☀️
Garden Shade Cloth $15-35

Reduce heat stress and sun scorch in hot climates with UV-stabilized shade cloth.

Helps protect plants from intense heat in zones 9+.

🌱
Seed Starting Trays $8-20

Start seeds indoors with reusable cell trays and humidity domes.

Essential for starting seeds indoors before transplanting.

🧪
Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

Know your soil before you plant for best results.

Frequently Asked Questions

What can I grow in Zone 10b?

Zone 10b supports 175 plants in our database including vegetables, herbs, fruits, and flowers. With a 364-day growing season (last frost ~January 1, first frost ~December 31), you can grow most common garden crops with proper timing.

What is Zone 10b?

USDA Zone 10b has an average annual minimum temperature of 35°F to 40°F.

When is the last frost in Zone 10b?

The average last spring frost in Zone 10b is approximately January 1. The first fall frost averages around December 31, giving a growing season of about 364 days. These dates are based on 50% probability — plan for some year-to-year variation.

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Monthly Planting Guide for Zone 10b

Other Zones

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Planting dates are estimates based on average frost dates — local conditions may vary. Last updated: June 2026.

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Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.

Plant varieties + growing data

Soil survey + temperature data

Drought monitoring

Household-consumption benchmarks

Derived

Other

Frost dates

Modeling

Precipitation + climate normals

Curated

Pest + disease pressure

Local extension offices

Daylight hours + sun data

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