Frost Dates for Thousand Oaks, CA 91360
Last spring frost January 22 · First fall frost November 29 · 311 frost-free days · USDA Zone 10a
ZIP 91360 has about 42,200 people, the largest of 2 ZIP codes in Thousand Oaks.
Very long season: 311 frost-free days. Spring frost risk spans February 2–April 9 (66 days). Fall frost risk spans November 7–January 20 (74 days).
Frost probability for 91360
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 9 | January 22 | February 2 |
| Fall (first frost) | November 7 | November 29 | January 20 |
Dates come from NOAA 1971–2000 freeze probabilities at SANTA PAULA (25.9 km away); the 50% date is the median year.
Frost dates by ZIP code in Thousand Oaks, CA
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 91360 | January 22 | November 29 | 10a |
| 91362 | January 22 | November 29 | 10b |
Which crops fit a 311-day season in Thousand Oaks
In Thousand Oaks (311 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Dec 18 | Feb 5–Feb 12 | 269 | fits: 80 days to maturity, 269 available after Feb 5. | Jul 30 |
| Pepper | Dec 11 | Feb 5–Feb 12 | 269 | fits: 75 days to maturity, 269 available after Feb 5. | Aug 4 |
| Lettuce | Nov 27 | Dec 25–Jan 1 | 346 | two-plantings: Plant Dec 25 and again by Oct 8; both mature before Dec 6. | Oct 8 |
| Carrots | — | Jan 1–Jan 8 | 353 | fits: 70 days to maturity, 353 available after Jan 1. | Sep 27 |
| Cucumber | Jan 1 | Feb 5–Feb 12 | 283 | two-plantings: Plant Feb 5 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Beans | — | Jan 29–Feb 12 | 297 | two-plantings: Plant Jan 29 and again by Sep 9; both mature before Nov 22. | Sep 9 |
| Peas | — | Nov 27–Feb 5 | 374 | fits: 65 days to maturity, 374 available after Nov 27. | Sep 18 |
| Zucchini | Jan 8 | Feb 5–Feb 12 | 283 | two-plantings: Plant Feb 5 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Onion | Oct 30 | Dec 25–Jan 8 | 346 | fits: 100 days to maturity, 346 available after Dec 25. | — |
| Spinach | — | Nov 27–Jan 15 | 388 | two-plantings: Plant Nov 27 and again by Oct 27; both mature before Dec 20. | Oct 27 |
| Kale | Nov 13 | Dec 25–Jan 8 | 360 | two-plantings: Plant Dec 25 and again by Oct 12; both mature before Dec 20. | Oct 12 |
| Broccoli | Nov 27 | Dec 25–Jan 8 | 346 | fits: 80 days to maturity, 346 available after Dec 25. | Sep 3 |
| Cabbage | Nov 27 | Dec 25–Jan 8 | 360 | fits: 70 days to maturity, 360 available after Dec 25. | Sep 27 |
| Radish | — | Nov 27–Feb 19 | 374 | two-plantings: Plant Nov 27 and again by Oct 28; both mature before Dec 6. | Oct 28 |
| Beets | — | Nov 27–Feb 19 | 374 | two-plantings: Plant Nov 27 and again by Sep 28; both mature before Dec 6. | Sep 28 |
| Potatoes | — | Jan 8–Jan 15 | 332 | fits: 90 days to maturity, 332 available after Jan 8. | — |
| Garlic | — | Nov 29 | 416 | overwinter: Plant Nov 29 to Dec 20; harvest the following summer. | Dec 20 |
| Strawberry | — | Dec 18–Feb 12 | 367 | perennial: A perennial: plant Dec 18; it fruits from the following year and keeps producing for several years. | — |
| Corn | Dec 25 | Jan 29–Feb 5 | 283 | fits: 75 days to maturity, 283 available after Jan 29. | Aug 11 |
| Pumpkin | Jan 8 | Feb 5–Feb 5 | 276 | fits: 100 days to maturity, 276 available after Feb 5. | Jul 17 |
| Cauliflower | Dec 11 | Jan 15–Jan 29 | 325 | fits: 75 days to maturity, 325 available after Jan 15. | Sep 8 |
| Swiss Chard | Nov 27 | Jan 8–Jan 8 | 332 | two-plantings: Plant Jan 8 and again by Sep 28; both mature before Dec 6. | Sep 28 |
| Arugula | — | Nov 27–Feb 19 | 388 | two-plantings: Plant Nov 27 and again by Oct 27; both mature before Dec 20. | Oct 27 |
| Brussel Sprouts | Nov 27 | Dec 25–Jan 8 | 360 | fits: 100 days to maturity, 360 available after Dec 25. | Aug 28 |
| Butternut Squash | Jan 8 | Feb 5–Feb 12 | 276 | fits: 100 days to maturity, 276 available after Feb 5. | Jul 17 |
| Eggplant | Dec 4 | Feb 5–Feb 12 | 269 | fits: 70 days to maturity, 269 available after Feb 5. | Aug 9 |
| Okra | Dec 25 | Jan 29–Feb 5 | 290 | two-plantings: Plant Jan 29 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Basil | Dec 18 | Feb 12–Feb 12 | 276 | two-plantings: Plant Feb 12 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Cilantro | — | Dec 25–Jan 15 | 346 | two-plantings: Plant Dec 25 and again by Oct 3; both mature before Dec 6. | Oct 3 |
| Parsley | Nov 13 | Jan 29–Feb 5 | 311 | fits: 70 days to maturity, 311 available after Jan 29. | Sep 13 |
| Celery | Nov 13 | Jan 29–Feb 12 | 311 | fits: 120 days to maturity, 311 available after Jan 29. | Jul 25 |
| Scallions | Nov 13 | Dec 25–Jan 8 | 360 | two-plantings: Plant Dec 25 and again by Oct 7; both mature before Dec 20. | Oct 7 |
| Turnip | — | Dec 25–Jan 8 | 360 | two-plantings: Plant Dec 25 and again by Oct 17; both mature before Dec 20. | Oct 17 |
| Kohlrabi | — | Dec 11–Dec 25 | 374 | two-plantings: Plant Dec 11 and again by Oct 12; both mature before Dec 20. | Oct 12 |
| Bok Choy | Dec 25 | Jan 15–Jan 22 | 325 | two-plantings: Plant Jan 15 and again by Oct 8; both mature before Dec 6. | Oct 8 |
| Collards | Nov 13 | Dec 25–Jan 8 | 360 | two-plantings: Plant Dec 25 and again by Oct 7; both mature before Dec 20. | Oct 7 |
| Cantaloupe | Jan 8 | Feb 5–Feb 12 | 269 | fits: 85 days to maturity, 269 available after Feb 5. | Jul 25 |
| Chives | Oct 30 | Jan 29–Feb 5 | 325 | fits: 90 days to maturity, 325 available after Jan 29. | — |
| Dill | — | Nov 27–Feb 19 | 374 | two-plantings: Plant Nov 27 and again by Sep 28; both mature before Dec 6. | Sep 28 |
| Oregano | Nov 13 | Jan 29–Feb 5 | 325 | fits: 80 days to maturity, 325 available after Jan 29. | — |
| Rosemary | Oct 30 | Jan 29–Feb 5 | 311 | fits: 80 days to maturity, 311 available after Jan 29. | — |
| Sage | Nov 27 | Jan 29–Feb 5 | 325 | fits: 75 days to maturity, 325 available after Jan 29. | — |
| Thyme | Nov 13 | Jan 29–Feb 5 | 325 | fits: 90 days to maturity, 325 available after Jan 29. | — |
| Calendula | Dec 11 | Jan 8–Jan 22 | 332 | two-plantings: Plant Jan 8 and again by Oct 3; both mature before Dec 6. | Oct 3 |
| Cosmos | Dec 25 | Jan 22–Feb 5 | 297 | two-plantings: Plant Jan 22 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Lavender | Oct 30 | Jan 22–Feb 5 | 332 | fits: 90 days to maturity, 332 available after Jan 22. | — |
| Marigolds | Dec 11 | Jan 22–Jan 29 | 297 | two-plantings: Plant Jan 22 and again by Sep 12; both mature before Nov 15. | Sep 12 |
| Melons | Jan 8 | Feb 5–Feb 12 | 269 | fits: 85 days to maturity, 269 available after Feb 5. | Jul 25 |
| Mint | — | Jan 22–Feb 5 | 332 | fits: 90 days to maturity, 332 available after Jan 22. | — |
| Nasturtiums | Dec 25 | Jan 22–Jan 29 | 297 | two-plantings: Plant Jan 22 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Pole Beans | — | Jan 29–Feb 12 | 290 | fits: 65 days to maturity, 290 available after Jan 29. | Aug 28 |
| Spaghetti Squash | Jan 8 | Feb 5–Feb 12 | 276 | fits: 90 days to maturity, 276 available after Feb 5. | Jul 27 |
| Sunflowers | — | Jan 22–Feb 5 | 297 | fits: 70 days to maturity, 297 available after Jan 22. | Aug 23 |
| Tomatillos | Nov 27 | Jan 29–Feb 5 | 276 | fits: 75 days to maturity, 276 available after Jan 29. | Aug 4 |
| Watermelon | Jan 8 | Jan 29–Feb 5 | 276 | fits: 80 days to maturity, 276 available after Jan 29. | Jul 30 |
| Yellow Squash | Jan 8 | Feb 5–Feb 12 | 283 | two-plantings: Plant Feb 5 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Zinnias | Dec 25 | Jan 22–Feb 5 | 297 | two-plantings: Plant Jan 22 and again by Sep 2; both mature before Nov 15. | Sep 2 |
Month by month in Thousand Oaks
| Month | What to do |
|---|---|
| January | Start indoors: Cucumber (Jan 1), Butternut Squash (Jan 8), Cantaloupe (Jan 8), Melons (Jan 8), Pumpkin (Jan 8), Spaghetti Squash (Jan 8), +3 more. Direct sow from: Carrots (Jan 1), Potatoes (Jan 8), Sunflowers (Jan 22), Beans (Jan 29), Pole Beans (Jan 29). Transplant from: Calendula (Jan 8), Swiss Chard (Jan 8), Bok Choy (Jan 15), Cauliflower (Jan 15), Cosmos (Jan 22), Lavender (Jan 22), +15 more. Last frost around January 22. |
| February | Transplant from: Butternut Squash (Feb 5), Cantaloupe (Feb 5), Cucumber (Feb 5), Eggplant (Feb 5), Melons (Feb 5), Pepper (Feb 5), +6 more. |
| March | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| April | Harvest regularly to encourage production. Monitor for pests and disease. |
| May | Midsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall. |
| June | Direct sow carrots and beets for fall harvest. Start fall broccoli and kale indoors. |
| July | Last sowing dates: Butternut Squash (Jul 17), Pumpkin (Jul 17), Cantaloupe (Jul 25), Celery (Jul 25), Melons (Jul 25), Spaghetti Squash (Jul 27), +2 more. |
| August | Last sowing dates: Pepper (Aug 4), Tomatillos (Aug 4), Eggplant (Aug 9), Corn (Aug 11), Sunflowers (Aug 23), Brussel Sprouts (Aug 28), +1 more. |
| September | Last sowing dates: Basil (Sep 2), Cosmos (Sep 2), Cucumber (Sep 2), Zinnias (Sep 2), Broccoli (Sep 3), Nasturtiums (Sep 7), +13 more. |
| October | Start indoors: Chives (Oct 30), Lavender (Oct 30), Onion (Oct 30), Rosemary (Oct 30). Last sowing dates: Calendula (Oct 3), Cilantro (Oct 3), Collards (Oct 7), Scallions (Oct 7), Bok Choy (Oct 8), Lettuce (Oct 8), +6 more. |
| November | Start indoors: Celery (Nov 13), Collards (Nov 13), Kale (Nov 13), Oregano (Nov 13), Parsley (Nov 13), Scallions (Nov 13), +8 more. Direct sow from: Arugula (Nov 27), Beets (Nov 27), Dill (Nov 27), Peas (Nov 27), Radish (Nov 27), Spinach (Nov 27), +1 more. First frost around November 29. |
| December | Start indoors: Eggplant (Dec 4), Calendula (Dec 11), Cauliflower (Dec 11), Marigolds (Dec 11), Pepper (Dec 11), Basil (Dec 18), +7 more. Direct sow from: Kohlrabi (Dec 11), Cilantro (Dec 25), Turnip (Dec 25). Transplant from: Broccoli (Dec 25), Brussel Sprouts (Dec 25), Cabbage (Dec 25), Collards (Dec 25), Kale (Dec 25), Lettuce (Dec 25), +2 more. Plant: Strawberry (Dec 18). Last sowing dates: Garlic (Dec 20). |
Frequently Asked Questions
What is the last frost date for Thousand Oaks, CA (ZIP 91360)?
The median last spring frost date for Thousand Oaks, CA (ZIP code 91360) is around January 22. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before February 2; one in ten it runs past April 9.
What is the first fall frost date in Thousand Oaks, CA?
The median first fall frost date for Thousand Oaks, CA is around November 29. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around November 7 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Thousand Oaks, CA?
The frost-free growing season in Thousand Oaks is about 311 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Thousand Oaks (311 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Thousand Oaks, CA?
Thousand Oaks, CA is in USDA hardiness zone 10a (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Thousand Oaks, CA?
Start tomatoes indoors Dec 18 and plant out Feb 5 in Thousand Oaks. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Thousand Oaks?
Two: plant Dec 25 and again by Oct 8; both mature before Dec 6.
When do I plant garlic in Thousand Oaks?
Nov 29 to Dec 20; it overwinters and is ready the following summer.
Can I get two tomato crops in Thousand Oaks?
Yes: plant out Feb 5 for a summer crop, and set out a second round of transplants by Jul 30 for a fall crop.
Which nearby ZIP has a longer season?
Oak Park (ZIP 91377) has 365 frost-free days, 54 more than Thousand Oaks (ZIP 91360). See Oak Park ZIP 91377 frost dates
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