Frost Dates for Vacaville, CA 95687
Last spring frost February 9 · First fall frost December 6 · 300 frost-free days · USDA Zone 9b
ZIP 95687 has about 69,400 people, the largest of 2 ZIP codes in Vacaville.
Very long season: 300 frost-free days. Spring frost risk spans January 17–March 20 (62 days). Fall frost risk spans November 9–January 4 (56 days).
Frost probability for 95687
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 20 | February 9 | January 17 |
| Fall (first frost) | November 9 | December 6 | January 4 |
Dates come from NOAA 1971–2000 freeze probabilities at WINTERS (21.9 km away); the 50% date is the median year.
Frost dates by ZIP code in Vacaville, CA
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 95687 | February 9 | December 6 | 9b |
| 95688 | March 2 | November 29 | 9b |
Which crops fit a 300-day season in Vacaville
In Vacaville (300 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 | Jan 5 | Feb 23–Mar 2 | 258 | fits: 80 days to maturity, 258 available after Feb 23. | Aug 6 |
| Pepper | Dec 29 | Feb 23–Mar 2 | 258 | fits: 75 days to maturity, 258 available after Feb 23. | Aug 11 |
| Lettuce | Dec 15 | Jan 12–Jan 19 | 335 | two-plantings: Plant Jan 12 and again by Oct 15; both mature before Dec 13. | Oct 15 |
| Carrots | — | Jan 19–Jan 26 | 342 | fits: 70 days to maturity, 342 available after Jan 19. | Oct 4 |
| Cucumber | Jan 19 | Feb 23–Mar 2 | 272 | two-plantings: Plant Feb 23 and again by Sep 9; both mature before Nov 22. | Sep 9 |
| Beans | — | Feb 16–Mar 2 | 286 | two-plantings: Plant Feb 16 and again by Sep 16; both mature before Nov 29. | Sep 16 |
| Peas | — | Dec 15–Feb 23 | 363 | fits: 65 days to maturity, 363 available after Dec 15. | Sep 25 |
| Zucchini | Jan 26 | Feb 23–Mar 2 | 272 | two-plantings: Plant Feb 23 and again by Sep 14; both mature before Nov 22. | Sep 14 |
| Onion | Nov 17 | Jan 12–Jan 26 | 335 | fits: 100 days to maturity, 335 available after Jan 12. | — |
| Spinach | — | Dec 15–Feb 2 | 377 | two-plantings: Plant Dec 15 and again by Nov 3; both mature before Dec 27. | Nov 3 |
| Kale | Dec 1 | Jan 12–Jan 26 | 349 | two-plantings: Plant Jan 12 and again by Oct 19; both mature before Dec 27. | Oct 19 |
| Broccoli | Dec 15 | Jan 12–Jan 26 | 335 | fits: 80 days to maturity, 335 available after Jan 12. | Sep 10 |
| Cabbage | Dec 15 | Jan 12–Jan 26 | 349 | fits: 70 days to maturity, 349 available after Jan 12. | Oct 4 |
| Radish | — | Dec 15–Mar 9 | 363 | two-plantings: Plant Dec 15 and again by Nov 4; both mature before Dec 13. | Nov 4 |
| Beets | — | Dec 15–Mar 9 | 363 | two-plantings: Plant Dec 15 and again by Oct 5; both mature before Dec 13. | Oct 5 |
| Potatoes | — | Jan 26–Feb 2 | 321 | fits: 90 days to maturity, 321 available after Jan 26. | — |
| Garlic | — | Dec 6 | 405 | overwinter: Plant Dec 6 to Dec 27; harvest the following summer. | Dec 27 |
| Strawberry | — | Jan 5–Mar 2 | 356 | perennial: A perennial: plant Jan 5; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 12 | Feb 16–Feb 23 | 272 | fits: 75 days to maturity, 272 available after Feb 16. | Aug 18 |
| Pumpkin | Jan 26 | Feb 23–Feb 23 | 265 | fits: 100 days to maturity, 265 available after Feb 23. | Jul 24 |
| Cauliflower | Dec 29 | Feb 2–Feb 16 | 314 | fits: 75 days to maturity, 314 available after Feb 2. | Sep 15 |
| Swiss Chard | Dec 15 | Jan 26–Jan 26 | 321 | two-plantings: Plant Jan 26 and again by Oct 5; both mature before Dec 13. | Oct 5 |
| Arugula | — | Dec 15–Mar 9 | 377 | two-plantings: Plant Dec 15 and again by Nov 3; both mature before Dec 27. | Nov 3 |
| Brussel Sprouts | Dec 15 | Jan 12–Jan 26 | 349 | fits: 100 days to maturity, 349 available after Jan 12. | Sep 4 |
| Butternut Squash | Jan 26 | Feb 23–Mar 2 | 265 | fits: 100 days to maturity, 265 available after Feb 23. | Jul 24 |
| Eggplant | Dec 22 | Feb 23–Mar 2 | 258 | fits: 70 days to maturity, 258 available after Feb 23. | Aug 16 |
| Okra | Jan 12 | Feb 16–Feb 23 | 279 | two-plantings: Plant Feb 16 and again by Sep 14; both mature before Nov 22. | Sep 14 |
| Basil | Jan 5 | Mar 2–Mar 2 | 265 | two-plantings: Plant Mar 2 and again by Sep 9; both mature before Nov 22. | Sep 9 |
| Cilantro | — | Jan 12–Feb 2 | 335 | two-plantings: Plant Jan 12 and again by Oct 10; both mature before Dec 13. | Oct 10 |
| Parsley | Dec 1 | Feb 16–Feb 23 | 300 | fits: 70 days to maturity, 300 available after Feb 16. | Sep 20 |
| Celery | Dec 1 | Feb 16–Mar 2 | 300 | fits: 120 days to maturity, 300 available after Feb 16. | Aug 1 |
| Scallions | Dec 1 | Jan 12–Jan 26 | 349 | two-plantings: Plant Jan 12 and again by Oct 14; both mature before Dec 27. | Oct 14 |
| Turnip | — | Jan 12–Jan 26 | 349 | two-plantings: Plant Jan 12 and again by Oct 24; both mature before Dec 27. | Oct 24 |
| Kohlrabi | — | Dec 29–Jan 12 | 363 | two-plantings: Plant Dec 29 and again by Oct 19; both mature before Dec 27. | Oct 19 |
| Bok Choy | Jan 12 | Feb 2–Feb 9 | 314 | two-plantings: Plant Feb 2 and again by Oct 15; both mature before Dec 13. | Oct 15 |
| Collards | Dec 1 | Jan 12–Jan 26 | 349 | two-plantings: Plant Jan 12 and again by Oct 14; both mature before Dec 27. | Oct 14 |
| Cantaloupe | Jan 26 | Feb 23–Mar 2 | 258 | fits: 85 days to maturity, 258 available after Feb 23. | Aug 1 |
| Chives | Nov 17 | Feb 16–Feb 23 | 314 | fits: 90 days to maturity, 314 available after Feb 16. | — |
| Dill | — | Dec 15–Mar 9 | 363 | two-plantings: Plant Dec 15 and again by Oct 5; both mature before Dec 13. | Oct 5 |
| Oregano | Dec 1 | Feb 16–Feb 23 | 314 | fits: 80 days to maturity, 314 available after Feb 16. | — |
| Rosemary | Nov 17 | Feb 16–Feb 23 | 300 | fits: 80 days to maturity, 300 available after Feb 16. | — |
| Sage | Dec 15 | Feb 16–Feb 23 | 314 | fits: 75 days to maturity, 314 available after Feb 16. | — |
| Thyme | Dec 1 | Feb 16–Feb 23 | 314 | fits: 90 days to maturity, 314 available after Feb 16. | — |
| Calendula | Dec 29 | Jan 26–Feb 9 | 321 | two-plantings: Plant Jan 26 and again by Oct 10; both mature before Dec 13. | Oct 10 |
| Cosmos | Jan 12 | Feb 9–Feb 23 | 286 | two-plantings: Plant Feb 9 and again by Sep 9; both mature before Nov 22. | Sep 9 |
| Lavender | Nov 17 | Feb 9–Feb 23 | 321 | fits: 90 days to maturity, 321 available after Feb 9. | — |
| Marigolds | Dec 29 | Feb 9–Feb 16 | 286 | two-plantings: Plant Feb 9 and again by Sep 19; both mature before Nov 22. | Sep 19 |
| Melons | Jan 26 | Feb 23–Mar 2 | 258 | fits: 85 days to maturity, 258 available after Feb 23. | Aug 1 |
| Mint | — | Feb 9–Feb 23 | 321 | fits: 90 days to maturity, 321 available after Feb 9. | — |
| Nasturtiums | Jan 12 | Feb 9–Feb 16 | 286 | two-plantings: Plant Feb 9 and again by Sep 14; both mature before Nov 22. | Sep 14 |
| Pole Beans | — | Feb 16–Mar 2 | 279 | fits: 65 days to maturity, 279 available after Feb 16. | Sep 4 |
| Spaghetti Squash | Jan 26 | Feb 23–Mar 2 | 265 | fits: 90 days to maturity, 265 available after Feb 23. | Aug 3 |
| Sunflowers | — | Feb 9–Feb 23 | 286 | fits: 70 days to maturity, 286 available after Feb 9. | Aug 30 |
| Tomatillos | Dec 15 | Feb 16–Feb 23 | 265 | fits: 75 days to maturity, 265 available after Feb 16. | Aug 11 |
| Watermelon | Jan 26 | Feb 16–Feb 23 | 265 | fits: 80 days to maturity, 265 available after Feb 16. | Aug 6 |
| Yellow Squash | Jan 26 | Feb 23–Mar 2 | 272 | two-plantings: Plant Feb 23 and again by Sep 14; both mature before Nov 22. | Sep 14 |
| Zinnias | Jan 12 | Feb 9–Feb 23 | 286 | two-plantings: Plant Feb 9 and again by Sep 9; both mature before Nov 22. | Sep 9 |
Month by month in Vacaville
| Month | What to do |
|---|---|
| January | Start indoors: Basil (Jan 5), Tomato (Jan 5), Bok Choy (Jan 12), Corn (Jan 12), Cosmos (Jan 12), Nasturtiums (Jan 12), +11 more. Direct sow from: Cilantro (Jan 12), Turnip (Jan 12), Carrots (Jan 19), Potatoes (Jan 26). Transplant from: Broccoli (Jan 12), Brussel Sprouts (Jan 12), Cabbage (Jan 12), Collards (Jan 12), Kale (Jan 12), Lettuce (Jan 12), +4 more. Plant: Strawberry (Jan 5). |
| February | Direct sow from: Sunflowers (Feb 9), Beans (Feb 16), Pole Beans (Feb 16). Transplant from: Bok Choy (Feb 2), Cauliflower (Feb 2), Cosmos (Feb 9), Lavender (Feb 9), Marigolds (Feb 9), Mint (Feb 9), +24 more. Last frost around February 9. |
| March | Transplant from: Basil (Mar 2). |
| April | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| May | Harvest regularly to encourage production. Monitor for pests and disease. |
| June | Midsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall. |
| July | Last sowing dates: Butternut Squash (Jul 24), Pumpkin (Jul 24). |
| August | Last sowing dates: Cantaloupe (Aug 1), Celery (Aug 1), Melons (Aug 1), Spaghetti Squash (Aug 3), Tomato (Aug 6), Watermelon (Aug 6), +5 more. |
| September | Last sowing dates: Brussel Sprouts (Sep 4), Pole Beans (Sep 4), Basil (Sep 9), Cosmos (Sep 9), Cucumber (Sep 9), Zinnias (Sep 9), +10 more. |
| October | Last sowing dates: Cabbage (Oct 4), Carrots (Oct 4), Beets (Oct 5), Dill (Oct 5), Swiss Chard (Oct 5), Calendula (Oct 10), +8 more. |
| November | Start indoors: Chives (Nov 17), Lavender (Nov 17), Onion (Nov 17), Rosemary (Nov 17). Last sowing dates: Arugula (Nov 3), Spinach (Nov 3), Radish (Nov 4). |
| December | Start indoors: Celery (Dec 1), Collards (Dec 1), Kale (Dec 1), Oregano (Dec 1), Parsley (Dec 1), Scallions (Dec 1), +13 more. Direct sow from: Garlic (Dec 6), Arugula (Dec 15), Beets (Dec 15), Dill (Dec 15), Peas (Dec 15), Radish (Dec 15), +2 more. First frost around December 6. Last sowing dates: Garlic (Dec 27). |
Frequently Asked Questions
What is the last frost date for Vacaville, CA (ZIP 95687)?
The median last spring frost date for Vacaville, CA (ZIP code 95687) is around February 9. 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 January 17; one in ten it runs past March 20.
What is the first fall frost date in Vacaville, CA?
The median first fall frost date for Vacaville, CA is around December 6. 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 9 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Vacaville, CA?
The frost-free growing season in Vacaville is about 300 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 Vacaville (300 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 Vacaville, CA?
Vacaville, CA is in USDA hardiness zone 9b (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 Vacaville, CA?
Start tomatoes indoors Jan 5 and plant out Feb 23 in Vacaville. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Vacaville?
Two: plant Jan 12 and again by Oct 15; both mature before Dec 13.
When do I plant garlic in Vacaville?
Dec 6 to Dec 27; it overwinters and is ready the following summer.
Can I get two tomato crops in Vacaville?
Yes: plant out Feb 23 for a summer crop, and set out a second round of transplants by Aug 6 for a fall crop.
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