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Zone 9b planting calendar and frost dates
In USDA hardiness zone 9b, the average last spring frost is Feb 4 and the average first fall frost is Dec 10, leaving about 309 frost-free days. To be 90% sure of no later frost, wait until about Mar 7 to plant tender crops. These are medians of 55 NOAA weather stations in zone 9b; their last-frost dates range from Jan 5 to Mar 21.
What to plant each month in zone 9b
January
Potatoes (plant), Watermelon (start indoors), Lettuce (plant), Broccoli (plant), Cauliflower (plant), Cabbage (plant), Brussels sprouts (plant), Carrots (plant), Beets (plant), Onions (plant), Asparagus (plant), Cilantro (plant), Strawberries (plant), Blueberries (plant), Blackberries (plant), Rose bushes (plant), Foxglove (plant), Hostas (plant), Wildflower seeds (plant)
February
Tomatoes (plant), Bell peppers (plant), Pumpkins (plant), Cucumbers (plant), Okra (plant), Zucchini (plant), Watermelon (plant), Green beans (plant), Sweet corn (plant), Sweet potatoes (plant), Basil (plant), Dill (plant), Sage (plant), Lavender (plant), Borage (plant), Catmint (plant), Gladiolus (plant), Dahlias (plant), Caladiums (plant), Begonias (plant), Coleus (plant), Marigolds (plant), Zinnias (plant), Sunflowers (plant), Cosmos (plant), Mums (plant), Lantana (plant), Hydrangeas (plant), Coneflowers (plant), Bee balm (plant), Sedum (plant), Jasmine (plant)
March
Grass seed (plant)
August
Brussels sprouts (plant for fall)
September
Green beans (plant for fall), Peas (plant for fall), Kale (plant for fall), Broccoli (plant for fall), Cauliflower (plant for fall), Cabbage (plant for fall), Carrots (plant for fall)
October
Lettuce (plant for fall), Spinach (plant for fall), Beets (plant for fall), Radishes (plant for fall), Cilantro (plant for fall), Sage (plant for fall), Lavender (plant for fall), Catmint (plant for fall), Strawberries (plant for fall), Blueberries (plant for fall), Mums (plant for fall), Hydrangeas (plant for fall), Rose bushes (plant for fall), Peonies (plant), Iris (plant), Foxglove (plant for fall), Coneflowers (plant for fall), Bee balm (plant for fall), Hostas (plant for fall), Sedum (plant for fall), Grass seed (plant for fall)
November
Bell peppers (start indoors), Onions (start indoors), Lavender (start indoors), Tulips (plant), Daffodils (plant), Begonias (start indoors), Coleus (start indoors), Foxglove (start indoors), Coneflowers (start indoors), Bee balm (start indoors)
December
Tomatoes (start indoors), Peas (plant), Lettuce (start indoors), Spinach (plant), Kale (start indoors), Kale (plant), Broccoli (start indoors), Cauliflower (start indoors), Cabbage (start indoors), Brussels sprouts (start indoors), Radishes (plant), Garlic (plant), Basil (start indoors), Sage (start indoors), Dahlias (start indoors), Caladiums (start indoors), Marigolds (start indoors), Wildflower seeds (plant for fall)
Zone 9b planting dates for every plant
| Plant | Start indoors | Plant outdoors | Fall planting |
|---|---|---|---|
| Tomatoes | Dec 10 – Dec 24 | Feb 11 – Feb 25 | – |
| Bell peppers | Nov 26 – Dec 10 | Feb 18 – Mar 4 | – |
| Potatoes | – | Jan 7 – Jan 28 | – |
| Pumpkins | – | Feb 11 – Feb 25 | – |
| Cucumbers | – | Feb 11 – Feb 25 | – |
| Okra | – | Feb 18 – Mar 11 | – |
| Zucchini | – | Feb 11 – Feb 25 | – |
| Watermelon | Jan 7 – Jan 14 | Feb 18 – Mar 4 | – |
| Green beans | – | Feb 11 – Feb 25 | Sep 24 – Oct 8 |
| Sweet corn | – | Feb 11 – Feb 25 | – |
| Sweet potatoes | – | Feb 25 – Mar 11 | – |
| Peas | – | Dec 24 – Jan 14 | Sep 17 – Oct 8 |
| Lettuce | Dec 24 – Jan 7 | Jan 7 – Jan 28 | Oct 15 – Nov 5 |
| Spinach | – | Dec 24 – Jan 14 | Oct 15 – Nov 5 |
| Kale | Dec 10 – Dec 24 | Dec 31 – Jan 21 | Sep 17 – Oct 8 |
| Broccoli | Dec 10 – Dec 24 | Jan 14 – Jan 28 | Sep 10 – Oct 1 |
| Cauliflower | Dec 10 – Dec 24 | Jan 21 – Feb 4 | Sep 10 – Oct 1 |
| Cabbage | Dec 10 – Dec 24 | Jan 7 – Jan 21 | Sep 3 – Sep 24 |
| Brussels sprouts | Dec 10 – Dec 24 | Jan 14 – Jan 28 | Aug 20 – Sep 10 |
| Carrots | – | Jan 14 – Feb 4 | Sep 17 – Oct 1 |
| Beets | – | Jan 7 – Jan 28 | Oct 1 – Oct 15 |
| Radishes | – | Dec 24 – Jan 21 | Oct 29 – Nov 12 |
| Onions | Nov 26 – Dec 10 | Jan 7 – Jan 21 | – |
| Garlic | – | – | Dec 10 – Jan 7 |
| Asparagus | – | Jan 7 – Jan 28 | – |
| Basil | Dec 10 – Dec 24 | Feb 11 – Feb 25 | – |
| Cilantro | – | Jan 21 – Feb 11 | Oct 15 – Nov 12 |
| Dill | – | Feb 4 – Feb 18 | – |
| Sage | Dec 10 – Dec 24 | Feb 4 – Feb 25 | Oct 15 – Oct 29 |
| Lavender | Nov 12 – Nov 26 | Feb 11 – Mar 4 | Oct 1 – Oct 15 |
| Borage | – | Feb 4 – Feb 18 | – |
| Catmint | – | Feb 4 – Feb 25 | Oct 15 – Oct 29 |
| Strawberries | – | Jan 7 – Jan 28 | Oct 29 – Nov 12 |
| Blueberries | – | Jan 7 – Jan 28 | Oct 15 – Nov 12 |
| Blackberries | – | Jan 7 – Jan 28 | – |
| Tulips | – | – | Nov 26 – Jan 7 |
| Daffodils | – | – | Nov 12 – Dec 24 |
| Gladiolus | – | Feb 4 – Feb 18 | – |
| Dahlias | Dec 24 – Jan 7 | Feb 11 – Feb 25 | – |
| Caladiums | Dec 24 – Jan 7 | Feb 25 – Mar 11 | – |
| Begonias | Nov 12 – Dec 10 | Feb 11 – Feb 25 | – |
| Coleus | Nov 26 – Dec 10 | Feb 18 – Mar 4 | – |
| Marigolds | Dec 10 – Dec 24 | Feb 4 – Feb 18 | – |
| Zinnias | – | Feb 11 – Feb 25 | – |
| Sunflowers | – | Feb 11 – Feb 25 | – |
| Cosmos | – | Feb 4 – Feb 18 | – |
| Mums | – | Feb 4 – Feb 25 | Oct 15 – Oct 29 |
| Lantana | – | Feb 18 – Mar 4 | – |
| Hydrangeas | – | Feb 4 – Feb 18 | Oct 15 – Oct 29 |
| Rose bushes | – | Jan 7 – Feb 4 | Oct 15 – Oct 29 |
| Peonies | – | – | Oct 29 – Dec 10 |
| Iris | – | – | Oct 1 – Oct 29 |
| Foxglove | Nov 26 – Dec 10 | Jan 21 – Feb 11 | Oct 15 – Oct 29 |
| Coneflowers | Nov 26 – Dec 10 | Feb 4 – Feb 25 | Oct 15 – Oct 29 |
| Bee balm | Nov 26 – Dec 10 | Feb 4 – Feb 25 | Oct 15 – Oct 29 |
| Hostas | – | Jan 21 – Feb 18 | Oct 29 – Nov 12 |
| Sedum | – | Feb 4 – Feb 25 | Oct 15 – Oct 29 |
| Jasmine | – | Feb 18 – Mar 4 | – |
| Wildflower seeds | – | Jan 7 – Jan 28 | Dec 10 – Jan 21 |
| Grass seed | – | Mar 4 – Apr 1 | Oct 8 – Oct 29 |
Places in zone 9b
Weather stations used for this zone include Alice, TX; Angleton Brazoria, TX; Apalachicola, FL; Arcata Eureka, CA; Bakersfield, CA; Blythe, CA; Brooksville Hernando, FL; Chino, CA; Concord Buchanan, CA; Corpus Christi, TX; Crescent Mcnamara, CA; Edinburg 17 Nne, TX; Eureka Woodley Island, CA; Fresno Yosemite, CA; Houston Clover, TX; Houston Hobby, TX; Houston Hooks, TX; Houston Intercont, TX; Houston Sugarland, TX; Jacksonville, FL; Jacksonville Craig, FL; Kingsville Naas, TX; Lake Charles, LA; Laredo, TX and 31 more.
Zone 9b frost dates by state: Arizona · California · Florida · Louisiana · Nevada · Oregon · Texas
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