Frost Dates for Vallejo, CA 94590
Vallejo has 4 ZIP codes. The Vallejo, CA frost page lists all of them with their dates.
Last spring frost February 3 · First fall frost December 5 · 305 frost-free days · USDA Zone 9b
ZIP 94590 has about 37,100 people, one of 4 ZIP codes in Vallejo.
Very long season: 305 frost-free days. Spring frost risk spans January 10–March 27 (76 days).
Frost probability for 94590
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 27 | February 3 | January 10 |
| Fall (first frost) | November 11 | December 5 | — |
Dates come from NOAA 1971–2000 freeze probabilities at MARTINEZ WTP (15.0 km away); the 50% date is the median year.
Which crops fit a 305-day season in Vallejo
In Vallejo (305 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 30 | Feb 17–Feb 24 | 263 | fits: 80 days to maturity, 263 available after Feb 17. | Aug 5 |
| Pepper | Dec 23 | Feb 17–Feb 24 | 263 | fits: 75 days to maturity, 263 available after Feb 17. | Aug 10 |
| Lettuce | Dec 9 | Jan 6–Jan 13 | 340 | two-plantings: Plant Jan 6 and again by Oct 14; both mature before Dec 12. | Oct 14 |
| Carrots | — | Jan 13–Jan 20 | 347 | fits: 70 days to maturity, 347 available after Jan 13. | Oct 3 |
| Cucumber | Jan 13 | Feb 17–Feb 24 | 277 | two-plantings: Plant Feb 17 and again by Sep 8; both mature before Nov 21. | Sep 8 |
| Beans | — | Feb 10–Feb 24 | 291 | two-plantings: Plant Feb 10 and again by Sep 15; both mature before Nov 28. | Sep 15 |
| Peas | — | Dec 9–Feb 17 | 368 | fits: 65 days to maturity, 368 available after Dec 9. | Sep 24 |
| Zucchini | Jan 20 | Feb 17–Feb 24 | 277 | two-plantings: Plant Feb 17 and again by Sep 13; both mature before Nov 21. | Sep 13 |
| Onion | Nov 11 | Jan 6–Jan 20 | 340 | fits: 100 days to maturity, 340 available after Jan 6. | — |
| Spinach | — | Dec 9–Jan 27 | 382 | two-plantings: Plant Dec 9 and again by Nov 2; both mature before Dec 26. | Nov 2 |
| Kale | Nov 25 | Jan 6–Jan 20 | 354 | two-plantings: Plant Jan 6 and again by Oct 18; both mature before Dec 26. | Oct 18 |
| Broccoli | Dec 9 | Jan 6–Jan 20 | 340 | fits: 80 days to maturity, 340 available after Jan 6. | Sep 9 |
| Cabbage | Dec 9 | Jan 6–Jan 20 | 354 | fits: 70 days to maturity, 354 available after Jan 6. | Oct 3 |
| Radish | — | Dec 9–Mar 3 | 368 | two-plantings: Plant Dec 9 and again by Nov 3; both mature before Dec 12. | Nov 3 |
| Beets | — | Dec 9–Mar 3 | 368 | two-plantings: Plant Dec 9 and again by Oct 4; both mature before Dec 12. | Oct 4 |
| Potatoes | — | Jan 20–Jan 27 | 326 | fits: 90 days to maturity, 326 available after Jan 20. | — |
| Garlic | — | Dec 5 | 410 | overwinter: Plant Dec 5 to Dec 26; harvest the following summer. | Dec 26 |
| Strawberry | — | Dec 30–Feb 24 | 361 | perennial: A perennial: plant Dec 30; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 6 | Feb 10–Feb 17 | 277 | fits: 75 days to maturity, 277 available after Feb 10. | Aug 17 |
| Pumpkin | Jan 20 | Feb 17–Feb 17 | 270 | fits: 100 days to maturity, 270 available after Feb 17. | Jul 23 |
| Cauliflower | Dec 23 | Jan 27–Feb 10 | 319 | fits: 75 days to maturity, 319 available after Jan 27. | Sep 14 |
| Swiss Chard | Dec 9 | Jan 20–Jan 20 | 326 | two-plantings: Plant Jan 20 and again by Oct 4; both mature before Dec 12. | Oct 4 |
| Arugula | — | Dec 9–Mar 3 | 382 | two-plantings: Plant Dec 9 and again by Nov 2; both mature before Dec 26. | Nov 2 |
| Brussel Sprouts | Dec 9 | Jan 6–Jan 20 | 354 | fits: 100 days to maturity, 354 available after Jan 6. | Sep 3 |
| Butternut Squash | Jan 20 | Feb 17–Feb 24 | 270 | fits: 100 days to maturity, 270 available after Feb 17. | Jul 23 |
| Eggplant | Dec 16 | Feb 17–Feb 24 | 263 | fits: 70 days to maturity, 263 available after Feb 17. | Aug 15 |
| Okra | Jan 6 | Feb 10–Feb 17 | 284 | two-plantings: Plant Feb 10 and again by Sep 13; both mature before Nov 21. | Sep 13 |
| Basil | Dec 30 | Feb 24–Feb 24 | 270 | two-plantings: Plant Feb 24 and again by Sep 8; both mature before Nov 21. | Sep 8 |
| Cilantro | — | Jan 6–Jan 27 | 340 | two-plantings: Plant Jan 6 and again by Oct 9; both mature before Dec 12. | Oct 9 |
| Parsley | Nov 25 | Feb 10–Feb 17 | 305 | fits: 70 days to maturity, 305 available after Feb 10. | Sep 19 |
| Celery | Nov 25 | Feb 10–Feb 24 | 305 | fits: 120 days to maturity, 305 available after Feb 10. | Jul 31 |
| Scallions | Nov 25 | Jan 6–Jan 20 | 354 | two-plantings: Plant Jan 6 and again by Oct 13; both mature before Dec 26. | Oct 13 |
| Turnip | — | Jan 6–Jan 20 | 354 | two-plantings: Plant Jan 6 and again by Oct 23; both mature before Dec 26. | Oct 23 |
| Kohlrabi | — | Dec 23–Jan 6 | 368 | two-plantings: Plant Dec 23 and again by Oct 18; both mature before Dec 26. | Oct 18 |
| Bok Choy | Jan 6 | Jan 27–Feb 3 | 319 | two-plantings: Plant Jan 27 and again by Oct 14; both mature before Dec 12. | Oct 14 |
| Collards | Nov 25 | Jan 6–Jan 20 | 354 | two-plantings: Plant Jan 6 and again by Oct 13; both mature before Dec 26. | Oct 13 |
| Cantaloupe | Jan 20 | Feb 17–Feb 24 | 263 | fits: 85 days to maturity, 263 available after Feb 17. | Jul 31 |
| Chives | Nov 11 | Feb 10–Feb 17 | 319 | fits: 90 days to maturity, 319 available after Feb 10. | — |
| Dill | — | Dec 9–Mar 3 | 368 | two-plantings: Plant Dec 9 and again by Oct 4; both mature before Dec 12. | Oct 4 |
| Oregano | Nov 25 | Feb 10–Feb 17 | 319 | fits: 80 days to maturity, 319 available after Feb 10. | — |
| Rosemary | Nov 11 | Feb 10–Feb 17 | 305 | fits: 80 days to maturity, 305 available after Feb 10. | — |
| Sage | Dec 9 | Feb 10–Feb 17 | 319 | fits: 75 days to maturity, 319 available after Feb 10. | — |
| Thyme | Nov 25 | Feb 10–Feb 17 | 319 | fits: 90 days to maturity, 319 available after Feb 10. | — |
| Calendula | Dec 23 | Jan 20–Feb 3 | 326 | two-plantings: Plant Jan 20 and again by Oct 9; both mature before Dec 12. | Oct 9 |
| Cosmos | Jan 6 | Feb 3–Feb 17 | 291 | two-plantings: Plant Feb 3 and again by Sep 8; both mature before Nov 21. | Sep 8 |
| Lavender | Nov 11 | Feb 3–Feb 17 | 326 | fits: 90 days to maturity, 326 available after Feb 3. | — |
| Marigolds | Dec 23 | Feb 3–Feb 10 | 291 | two-plantings: Plant Feb 3 and again by Sep 18; both mature before Nov 21. | Sep 18 |
| Melons | Jan 20 | Feb 17–Feb 24 | 263 | fits: 85 days to maturity, 263 available after Feb 17. | Jul 31 |
| Mint | — | Feb 3–Feb 17 | 326 | fits: 90 days to maturity, 326 available after Feb 3. | — |
| Nasturtiums | Jan 6 | Feb 3–Feb 10 | 291 | two-plantings: Plant Feb 3 and again by Sep 13; both mature before Nov 21. | Sep 13 |
| Pole Beans | — | Feb 10–Feb 24 | 284 | fits: 65 days to maturity, 284 available after Feb 10. | Sep 3 |
| Spaghetti Squash | Jan 20 | Feb 17–Feb 24 | 270 | fits: 90 days to maturity, 270 available after Feb 17. | Aug 2 |
| Sunflowers | — | Feb 3–Feb 17 | 291 | fits: 70 days to maturity, 291 available after Feb 3. | Aug 29 |
| Tomatillos | Dec 9 | Feb 10–Feb 17 | 270 | fits: 75 days to maturity, 270 available after Feb 10. | Aug 10 |
| Watermelon | Jan 20 | Feb 10–Feb 17 | 270 | fits: 80 days to maturity, 270 available after Feb 10. | Aug 5 |
| Yellow Squash | Jan 20 | Feb 17–Feb 24 | 277 | two-plantings: Plant Feb 17 and again by Sep 13; both mature before Nov 21. | Sep 13 |
| Zinnias | Jan 6 | Feb 3–Feb 17 | 291 | two-plantings: Plant Feb 3 and again by Sep 8; both mature before Nov 21. | Sep 8 |
Month by month in Vallejo
| Month | What to do |
|---|---|
| January | Start indoors: Bok Choy (Jan 6), Corn (Jan 6), Cosmos (Jan 6), Nasturtiums (Jan 6), Okra (Jan 6), Zinnias (Jan 6), +9 more. Direct sow from: Cilantro (Jan 6), Turnip (Jan 6), Carrots (Jan 13), Potatoes (Jan 20). Transplant from: Broccoli (Jan 6), Brussel Sprouts (Jan 6), Cabbage (Jan 6), Collards (Jan 6), Kale (Jan 6), Lettuce (Jan 6), +6 more. |
| February | Direct sow from: Sunflowers (Feb 3), Beans (Feb 10), Pole Beans (Feb 10). Transplant from: Cosmos (Feb 3), Lavender (Feb 3), Marigolds (Feb 3), Mint (Feb 3), Nasturtiums (Feb 3), Zinnias (Feb 3), +23 more. Last frost around February 3. |
| March | Frost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini. |
| 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 23), Pumpkin (Jul 23), Cantaloupe (Jul 31), Celery (Jul 31), Melons (Jul 31). |
| August | Last sowing dates: Spaghetti Squash (Aug 2), Tomato (Aug 5), Watermelon (Aug 5), Pepper (Aug 10), Tomatillos (Aug 10), Eggplant (Aug 15), +2 more. |
| September | Last sowing dates: Brussel Sprouts (Sep 3), Pole Beans (Sep 3), Basil (Sep 8), Cosmos (Sep 8), Cucumber (Sep 8), Zinnias (Sep 8), +10 more. |
| October | Last sowing dates: Cabbage (Oct 3), Carrots (Oct 3), Beets (Oct 4), Dill (Oct 4), Swiss Chard (Oct 4), Calendula (Oct 9), +8 more. |
| November | Start indoors: Chives (Nov 11), Lavender (Nov 11), Onion (Nov 11), Rosemary (Nov 11), Celery (Nov 25), Collards (Nov 25), +5 more. Last sowing dates: Arugula (Nov 2), Spinach (Nov 2), Radish (Nov 3). |
| December | Start indoors: Broccoli (Dec 9), Brussel Sprouts (Dec 9), Cabbage (Dec 9), Lettuce (Dec 9), Sage (Dec 9), Swiss Chard (Dec 9), +8 more. Direct sow from: Garlic (Dec 5), Arugula (Dec 9), Beets (Dec 9), Dill (Dec 9), Peas (Dec 9), Radish (Dec 9), +2 more. Plant: Strawberry (Dec 30). First frost around December 5. Last sowing dates: Garlic (Dec 26). |
Frequently Asked Questions
What is the last frost date for Vallejo, CA (ZIP 94590)?
The median last spring frost date for Vallejo, CA (ZIP code 94590) is around February 3. 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 10; one in ten it runs past March 27.
What is the first fall frost date in Vallejo, CA?
The median first fall frost date for Vallejo, CA is around December 5. 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 11 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Vallejo, CA?
The frost-free growing season in Vallejo is about 305 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 Vallejo (305 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 Vallejo, CA?
Vallejo, 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 Vallejo, CA?
Start tomatoes indoors Dec 30 and plant out Feb 17 in Vallejo. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Vallejo?
Two: plant Jan 6 and again by Oct 14; both mature before Dec 12.
When do I plant garlic in Vallejo?
Dec 5 to Dec 26; it overwinters and is ready the following summer.
Can I get two tomato crops in Vallejo?
Yes: plant out Feb 17 for a summer crop, and set out a second round of transplants by Aug 5 for a fall crop.
Which nearby ZIP has a longer season?
Hercules (ZIP 94547) has 365 frost-free days, 60 more than Vallejo (ZIP 94590). See Hercules ZIP 94547 frost dates
Nearby and related
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