Frost Dates for Blythe, CA 92225
Last spring frost January 25 · First fall frost December 9 · 318 frost-free days · USDA Zone 9b
ZIP 92225 has about 20,300 people.
Very long season: 318 frost-free days. Spring frost risk spans January 11–February 21 (41 days). Fall frost risk spans November 16–December 23 (37 days).
Frost probability for 92225
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | February 21 | January 25 | January 11 |
| Fall (first frost) | November 16 | December 9 | December 23 |
Dates come from NOAA 1971–2000 freeze probabilities at BLYTHE (12.7 km away); the 50% date is the median year.
Which crops fit a 318-day season in Blythe
In Blythe (318 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 21 | Feb 8–Feb 15 | 276 | fits: 80 days to maturity, 276 available after Feb 8. | Aug 9 |
| Pepper | Dec 14 | Feb 8–Feb 15 | 276 | fits: 75 days to maturity, 276 available after Feb 8. | Aug 14 |
| Lettuce | Nov 30 | Dec 28–Jan 4 | 353 | two-plantings: Plant Dec 28 and again by Oct 18; both mature before Dec 16. | Oct 18 |
| Carrots | — | Jan 4–Jan 11 | 360 | fits: 70 days to maturity, 360 available after Jan 4. | Oct 7 |
| Cucumber | Jan 4 | Feb 8–Feb 15 | 290 | two-plantings: Plant Feb 8 and again by Sep 12; both mature before Nov 25. | Sep 12 |
| Beans | — | Feb 1–Feb 15 | 304 | two-plantings: Plant Feb 1 and again by Sep 19; both mature before Dec 2. | Sep 19 |
| Peas | — | Nov 30–Feb 8 | 381 | fits: 65 days to maturity, 381 available after Nov 30. | Sep 28 |
| Zucchini | Jan 11 | Feb 8–Feb 15 | 290 | two-plantings: Plant Feb 8 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Onion | Nov 2 | Dec 28–Jan 11 | 353 | fits: 100 days to maturity, 353 available after Dec 28. | — |
| Spinach | — | Nov 30–Jan 18 | 395 | two-plantings: Plant Nov 30 and again by Nov 6; both mature before Dec 30. | Nov 6 |
| Kale | Nov 16 | Dec 28–Jan 11 | 367 | two-plantings: Plant Dec 28 and again by Oct 22; both mature before Dec 30. | Oct 22 |
| Broccoli | Nov 30 | Dec 28–Jan 11 | 353 | fits: 80 days to maturity, 353 available after Dec 28. | Sep 13 |
| Cabbage | Nov 30 | Dec 28–Jan 11 | 367 | fits: 70 days to maturity, 367 available after Dec 28. | Oct 7 |
| Radish | — | Nov 30–Feb 22 | 381 | two-plantings: Plant Nov 30 and again by Nov 7; both mature before Dec 16. | Nov 7 |
| Beets | — | Nov 30–Feb 22 | 381 | two-plantings: Plant Nov 30 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Potatoes | — | Jan 11–Jan 18 | 339 | fits: 90 days to maturity, 339 available after Jan 11. | — |
| Garlic | — | Dec 9 | 423 | overwinter: Plant Dec 9 to Dec 30; harvest the following summer. | Dec 30 |
| Strawberry | — | Dec 21–Feb 15 | 374 | perennial: A perennial: plant Dec 21; it fruits from the following year and keeps producing for several years. | — |
| Corn | Dec 28 | Feb 1–Feb 8 | 290 | fits: 75 days to maturity, 290 available after Feb 1. | Aug 21 |
| Pumpkin | Jan 11 | Feb 8–Feb 8 | 283 | fits: 100 days to maturity, 283 available after Feb 8. | Jul 27 |
| Cauliflower | Dec 14 | Jan 18–Feb 1 | 332 | fits: 75 days to maturity, 332 available after Jan 18. | Sep 18 |
| Swiss Chard | Nov 30 | Jan 11–Jan 11 | 339 | two-plantings: Plant Jan 11 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Arugula | — | Nov 30–Feb 22 | 395 | two-plantings: Plant Nov 30 and again by Nov 6; both mature before Dec 30. | Nov 6 |
| Brussel Sprouts | Nov 30 | Dec 28–Jan 11 | 367 | fits: 100 days to maturity, 367 available after Dec 28. | Sep 7 |
| Butternut Squash | Jan 11 | Feb 8–Feb 15 | 283 | fits: 100 days to maturity, 283 available after Feb 8. | Jul 27 |
| Eggplant | Dec 7 | Feb 8–Feb 15 | 276 | fits: 70 days to maturity, 276 available after Feb 8. | Aug 19 |
| Okra | Dec 28 | Feb 1–Feb 8 | 297 | two-plantings: Plant Feb 1 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Basil | Dec 21 | Feb 15–Feb 15 | 283 | two-plantings: Plant Feb 15 and again by Sep 12; both mature before Nov 25. | Sep 12 |
| Cilantro | — | Dec 28–Jan 18 | 353 | two-plantings: Plant Dec 28 and again by Oct 13; both mature before Dec 16. | Oct 13 |
| Parsley | Nov 16 | Feb 1–Feb 8 | 318 | fits: 70 days to maturity, 318 available after Feb 1. | Sep 23 |
| Celery | Nov 16 | Feb 1–Feb 15 | 318 | fits: 120 days to maturity, 318 available after Feb 1. | Aug 4 |
| Scallions | Nov 16 | Dec 28–Jan 11 | 367 | two-plantings: Plant Dec 28 and again by Oct 17; both mature before Dec 30. | Oct 17 |
| Turnip | — | Dec 28–Jan 11 | 367 | two-plantings: Plant Dec 28 and again by Oct 27; both mature before Dec 30. | Oct 27 |
| Kohlrabi | — | Dec 14–Dec 28 | 381 | two-plantings: Plant Dec 14 and again by Oct 22; both mature before Dec 30. | Oct 22 |
| Bok Choy | Dec 28 | Jan 18–Jan 25 | 332 | two-plantings: Plant Jan 18 and again by Oct 18; both mature before Dec 16. | Oct 18 |
| Collards | Nov 16 | Dec 28–Jan 11 | 367 | two-plantings: Plant Dec 28 and again by Oct 17; both mature before Dec 30. | Oct 17 |
| Cantaloupe | Jan 11 | Feb 8–Feb 15 | 276 | fits: 85 days to maturity, 276 available after Feb 8. | Aug 4 |
| Chives | Nov 2 | Feb 1–Feb 8 | 332 | fits: 90 days to maturity, 332 available after Feb 1. | — |
| Dill | — | Nov 30–Feb 22 | 381 | two-plantings: Plant Nov 30 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Oregano | Nov 16 | Feb 1–Feb 8 | 332 | fits: 80 days to maturity, 332 available after Feb 1. | — |
| Rosemary | Nov 2 | Feb 1–Feb 8 | 318 | fits: 80 days to maturity, 318 available after Feb 1. | — |
| Sage | Nov 30 | Feb 1–Feb 8 | 332 | fits: 75 days to maturity, 332 available after Feb 1. | — |
| Thyme | Nov 16 | Feb 1–Feb 8 | 332 | fits: 90 days to maturity, 332 available after Feb 1. | — |
| Calendula | Dec 14 | Jan 11–Jan 25 | 339 | two-plantings: Plant Jan 11 and again by Oct 13; both mature before Dec 16. | Oct 13 |
| Cosmos | Dec 28 | Jan 25–Feb 8 | 304 | two-plantings: Plant Jan 25 and again by Sep 12; both mature before Nov 25. | Sep 12 |
| Lavender | Nov 2 | Jan 25–Feb 8 | 339 | fits: 90 days to maturity, 339 available after Jan 25. | — |
| Marigolds | Dec 14 | Jan 25–Feb 1 | 304 | two-plantings: Plant Jan 25 and again by Sep 22; both mature before Nov 25. | Sep 22 |
| Melons | Jan 11 | Feb 8–Feb 15 | 276 | fits: 85 days to maturity, 276 available after Feb 8. | Aug 4 |
| Mint | — | Jan 25–Feb 8 | 339 | fits: 90 days to maturity, 339 available after Jan 25. | — |
| Nasturtiums | Dec 28 | Jan 25–Feb 1 | 304 | two-plantings: Plant Jan 25 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Pole Beans | — | Feb 1–Feb 15 | 297 | fits: 65 days to maturity, 297 available after Feb 1. | Sep 7 |
| Spaghetti Squash | Jan 11 | Feb 8–Feb 15 | 283 | fits: 90 days to maturity, 283 available after Feb 8. | Aug 6 |
| Sunflowers | — | Jan 25–Feb 8 | 304 | fits: 70 days to maturity, 304 available after Jan 25. | Sep 2 |
| Tomatillos | Nov 30 | Feb 1–Feb 8 | 283 | fits: 75 days to maturity, 283 available after Feb 1. | Aug 14 |
| Watermelon | Jan 11 | Feb 1–Feb 8 | 283 | fits: 80 days to maturity, 283 available after Feb 1. | Aug 9 |
| Yellow Squash | Jan 11 | Feb 8–Feb 15 | 290 | two-plantings: Plant Feb 8 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Zinnias | Dec 28 | Jan 25–Feb 8 | 304 | two-plantings: Plant Jan 25 and again by Sep 12; both mature before Nov 25. | Sep 12 |
Month by month in Blythe
| Month | What to do |
|---|---|
| January | Start indoors: Cucumber (Jan 4), Butternut Squash (Jan 11), Cantaloupe (Jan 11), Melons (Jan 11), Pumpkin (Jan 11), Spaghetti Squash (Jan 11), +3 more. Direct sow from: Carrots (Jan 4), Potatoes (Jan 11), Sunflowers (Jan 25). Transplant from: Calendula (Jan 11), Swiss Chard (Jan 11), Bok Choy (Jan 18), Cauliflower (Jan 18), Cosmos (Jan 25), Lavender (Jan 25), +4 more. Last frost around January 25. |
| February | Direct sow from: Beans (Feb 1), Pole Beans (Feb 1). Transplant from: Celery (Feb 1), Chives (Feb 1), Corn (Feb 1), Okra (Feb 1), Oregano (Feb 1), Parsley (Feb 1), +17 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 27), Pumpkin (Jul 27). |
| August | Last sowing dates: Cantaloupe (Aug 4), Celery (Aug 4), Melons (Aug 4), Spaghetti Squash (Aug 6), Tomato (Aug 9), Watermelon (Aug 9), +4 more. |
| September | Last sowing dates: Sunflowers (Sep 2), Brussel Sprouts (Sep 7), Pole Beans (Sep 7), Basil (Sep 12), Cosmos (Sep 12), Cucumber (Sep 12), +11 more. |
| October | Last sowing dates: Cabbage (Oct 7), Carrots (Oct 7), Beets (Oct 8), Dill (Oct 8), Swiss Chard (Oct 8), Calendula (Oct 13), +8 more. |
| November | Start indoors: Chives (Nov 2), Lavender (Nov 2), Onion (Nov 2), Rosemary (Nov 2), Celery (Nov 16), Collards (Nov 16), +12 more. Direct sow from: Arugula (Nov 30), Beets (Nov 30), Dill (Nov 30), Peas (Nov 30), Radish (Nov 30), Spinach (Nov 30). Last sowing dates: Arugula (Nov 6), Spinach (Nov 6), Radish (Nov 7). |
| December | Start indoors: Eggplant (Dec 7), Calendula (Dec 14), Cauliflower (Dec 14), Marigolds (Dec 14), Pepper (Dec 14), Basil (Dec 21), +7 more. Direct sow from: Garlic (Dec 9), Kohlrabi (Dec 14), Cilantro (Dec 28), Turnip (Dec 28). Transplant from: Broccoli (Dec 28), Brussel Sprouts (Dec 28), Cabbage (Dec 28), Collards (Dec 28), Kale (Dec 28), Lettuce (Dec 28), +2 more. Plant: Strawberry (Dec 21). First frost around December 9. Last sowing dates: Garlic (Dec 30). |
Frequently Asked Questions
What is the last frost date for Blythe, CA (ZIP 92225)?
The median last spring frost date for Blythe, CA (ZIP code 92225) is around January 25. 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 11; one in ten it runs past February 21.
What is the first fall frost date in Blythe, CA?
The median first fall frost date for Blythe, CA is around December 9. 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 16 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Blythe, CA?
The frost-free growing season in Blythe is about 318 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 Blythe (318 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 Blythe, CA?
Blythe, 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 Blythe, CA?
Start tomatoes indoors Dec 21 and plant out Feb 8 in Blythe. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Blythe?
Two: plant Dec 28 and again by Oct 18; both mature before Dec 16.
When do I plant garlic in Blythe?
Dec 9 to Dec 30; it overwinters and is ready the following summer.
Can I get two tomato crops in Blythe?
Yes: plant out Feb 8 for a summer crop, and set out a second round of transplants by Aug 9 for a fall crop.
Which nearby ZIP has a longer season?
Brawley (ZIP 92227) has 351 frost-free days, 33 more than Blythe (ZIP 92225). See Brawley ZIP 92227 frost dates
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