Frost Dates for Twentynine Palms, CA 92277
Last spring frost February 14 · First fall frost November 20 · 279 frost-free days · USDA Zone 9b
ZIP 92277 has about 26,300 people, the largest of 2 ZIP codes in Twentynine Palms.
Very long season: 279 frost-free days. Spring frost risk spans January 4–March 26 (81 days). Fall frost risk spans November 9–December 8 (29 days).
Frost probability for 92277
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 26 | February 14 | January 4 |
| Fall (first frost) | November 9 | November 20 | December 8 |
Dates come from NOAA 1971–2000 freeze probabilities at HAYFIELD PUMPING PLT (45.7 km away); the 50% date is the median year.
Frost dates by ZIP code in Twentynine Palms, CA
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 92277 | February 14 | November 20 | 9b |
| 92278 | January 10 | November 20 | 9b |
Which crops fit a 279-day season in Twentynine Palms
In Twentynine Palms (279 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 10 | Feb 28–Mar 7 | 237 | fits: 80 days to maturity, 237 available after Feb 28. | Jul 21 |
| Pepper | Jan 3 | Feb 28–Mar 7 | 237 | fits: 75 days to maturity, 237 available after Feb 28. | Jul 26 |
| Lettuce | Dec 20 | Jan 17–Jan 24 | 314 | two-plantings: Plant Jan 17 and again by Sep 29; both mature before Nov 27. | Sep 29 |
| Carrots | — | Jan 24–Jan 31 | 321 | fits: 70 days to maturity, 321 available after Jan 24. | Sep 18 |
| Cucumber | Jan 24 | Feb 28–Mar 7 | 251 | two-plantings: Plant Feb 28 and again by Aug 24; both mature before Nov 6. | Aug 24 |
| Beans | — | Feb 21–Mar 7 | 265 | two-plantings: Plant Feb 21 and again by Aug 31; both mature before Nov 13. | Aug 31 |
| Peas | — | Dec 20–Feb 28 | 342 | fits: 65 days to maturity, 342 available after Dec 20. | Sep 9 |
| Zucchini | Jan 31 | Feb 28–Mar 7 | 251 | two-plantings: Plant Feb 28 and again by Aug 29; both mature before Nov 6. | Aug 29 |
| Onion | Nov 22 | Jan 17–Jan 31 | 314 | fits: 100 days to maturity, 314 available after Jan 17. | — |
| Spinach | — | Dec 20–Feb 7 | 356 | two-plantings: Plant Dec 20 and again by Oct 18; both mature before Dec 11. | Oct 18 |
| Kale | Dec 6 | Jan 17–Jan 31 | 328 | two-plantings: Plant Jan 17 and again by Oct 3; both mature before Dec 11. | Oct 3 |
| Broccoli | Dec 20 | Jan 17–Jan 31 | 314 | fits: 80 days to maturity, 314 available after Jan 17. | Aug 25 |
| Cabbage | Dec 20 | Jan 17–Jan 31 | 328 | fits: 70 days to maturity, 328 available after Jan 17. | Sep 18 |
| Radish | — | Dec 20–Mar 14 | 342 | two-plantings: Plant Dec 20 and again by Oct 19; both mature before Nov 27. | Oct 19 |
| Beets | — | Dec 20–Mar 14 | 342 | two-plantings: Plant Dec 20 and again by Sep 19; both mature before Nov 27. | Sep 19 |
| Potatoes | — | Jan 31–Feb 7 | 300 | fits: 90 days to maturity, 300 available after Jan 31. | — |
| Garlic | — | Nov 20 | 384 | overwinter: Plant Nov 20 to Dec 11; harvest the following summer. | Dec 11 |
| Strawberry | — | Jan 10–Mar 7 | 335 | perennial: A perennial: plant Jan 10; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 17 | Feb 21–Feb 28 | 251 | fits: 75 days to maturity, 251 available after Feb 21. | Aug 2 |
| Pumpkin | Jan 31 | Feb 28–Feb 28 | 244 | fits: 100 days to maturity, 244 available after Feb 28. | Jul 8 |
| Cauliflower | Jan 3 | Feb 7–Feb 21 | 293 | fits: 75 days to maturity, 293 available after Feb 7. | Aug 30 |
| Swiss Chard | Dec 20 | Jan 31–Jan 31 | 300 | two-plantings: Plant Jan 31 and again by Sep 19; both mature before Nov 27. | Sep 19 |
| Arugula | — | Dec 20–Mar 14 | 356 | two-plantings: Plant Dec 20 and again by Oct 18; both mature before Dec 11. | Oct 18 |
| Brussel Sprouts | Dec 20 | Jan 17–Jan 31 | 328 | fits: 100 days to maturity, 328 available after Jan 17. | Aug 19 |
| Butternut Squash | Jan 31 | Feb 28–Mar 7 | 244 | fits: 100 days to maturity, 244 available after Feb 28. | Jul 8 |
| Eggplant | Dec 27 | Feb 28–Mar 7 | 237 | fits: 70 days to maturity, 237 available after Feb 28. | Jul 31 |
| Okra | Jan 17 | Feb 21–Feb 28 | 258 | two-plantings: Plant Feb 21 and again by Aug 29; both mature before Nov 6. | Aug 29 |
| Basil | Jan 10 | Mar 7–Mar 7 | 244 | two-plantings: Plant Mar 7 and again by Aug 24; both mature before Nov 6. | Aug 24 |
| Cilantro | — | Jan 17–Feb 7 | 314 | two-plantings: Plant Jan 17 and again by Sep 24; both mature before Nov 27. | Sep 24 |
| Parsley | Dec 6 | Feb 21–Feb 28 | 279 | fits: 70 days to maturity, 279 available after Feb 21. | Sep 4 |
| Celery | Dec 6 | Feb 21–Mar 7 | 279 | fits: 120 days to maturity, 279 available after Feb 21. | Jul 16 |
| Scallions | Dec 6 | Jan 17–Jan 31 | 328 | two-plantings: Plant Jan 17 and again by Sep 28; both mature before Dec 11. | Sep 28 |
| Turnip | — | Jan 17–Jan 31 | 328 | two-plantings: Plant Jan 17 and again by Oct 8; both mature before Dec 11. | Oct 8 |
| Kohlrabi | — | Jan 3–Jan 17 | 342 | two-plantings: Plant Jan 3 and again by Oct 3; both mature before Dec 11. | Oct 3 |
| Bok Choy | Jan 17 | Feb 7–Feb 14 | 293 | two-plantings: Plant Feb 7 and again by Sep 29; both mature before Nov 27. | Sep 29 |
| Collards | Dec 6 | Jan 17–Jan 31 | 328 | two-plantings: Plant Jan 17 and again by Sep 28; both mature before Dec 11. | Sep 28 |
| Cantaloupe | Jan 31 | Feb 28–Mar 7 | 237 | fits: 85 days to maturity, 237 available after Feb 28. | Jul 16 |
| Chives | Nov 22 | Feb 21–Feb 28 | 293 | fits: 90 days to maturity, 293 available after Feb 21. | — |
| Dill | — | Dec 20–Mar 14 | 342 | two-plantings: Plant Dec 20 and again by Sep 19; both mature before Nov 27. | Sep 19 |
| Oregano | Dec 6 | Feb 21–Feb 28 | 293 | fits: 80 days to maturity, 293 available after Feb 21. | — |
| Rosemary | Nov 22 | Feb 21–Feb 28 | 279 | fits: 80 days to maturity, 279 available after Feb 21. | — |
| Sage | Dec 20 | Feb 21–Feb 28 | 293 | fits: 75 days to maturity, 293 available after Feb 21. | — |
| Thyme | Dec 6 | Feb 21–Feb 28 | 293 | fits: 90 days to maturity, 293 available after Feb 21. | — |
| Calendula | Jan 3 | Jan 31–Feb 14 | 300 | two-plantings: Plant Jan 31 and again by Sep 24; both mature before Nov 27. | Sep 24 |
| Cosmos | Jan 17 | Feb 14–Feb 28 | 265 | two-plantings: Plant Feb 14 and again by Aug 24; both mature before Nov 6. | Aug 24 |
| Lavender | Nov 22 | Feb 14–Feb 28 | 300 | fits: 90 days to maturity, 300 available after Feb 14. | — |
| Marigolds | Jan 3 | Feb 14–Feb 21 | 265 | two-plantings: Plant Feb 14 and again by Sep 3; both mature before Nov 6. | Sep 3 |
| Melons | Jan 31 | Feb 28–Mar 7 | 237 | fits: 85 days to maturity, 237 available after Feb 28. | Jul 16 |
| Mint | — | Feb 14–Feb 28 | 300 | fits: 90 days to maturity, 300 available after Feb 14. | — |
| Nasturtiums | Jan 17 | Feb 14–Feb 21 | 265 | two-plantings: Plant Feb 14 and again by Aug 29; both mature before Nov 6. | Aug 29 |
| Pole Beans | — | Feb 21–Mar 7 | 258 | fits: 65 days to maturity, 258 available after Feb 21. | Aug 19 |
| Spaghetti Squash | Jan 31 | Feb 28–Mar 7 | 244 | fits: 90 days to maturity, 244 available after Feb 28. | Jul 18 |
| Sunflowers | — | Feb 14–Feb 28 | 265 | fits: 70 days to maturity, 265 available after Feb 14. | Aug 14 |
| Tomatillos | Dec 20 | Feb 21–Feb 28 | 244 | fits: 75 days to maturity, 244 available after Feb 21. | Jul 26 |
| Watermelon | Jan 31 | Feb 21–Feb 28 | 244 | fits: 80 days to maturity, 244 available after Feb 21. | Jul 21 |
| Yellow Squash | Jan 31 | Feb 28–Mar 7 | 251 | two-plantings: Plant Feb 28 and again by Aug 29; both mature before Nov 6. | Aug 29 |
| Zinnias | Jan 17 | Feb 14–Feb 28 | 265 | two-plantings: Plant Feb 14 and again by Aug 24; both mature before Nov 6. | Aug 24 |
Month by month in Twentynine Palms
| Month | What to do |
|---|---|
| January | Start indoors: Calendula (Jan 3), Cauliflower (Jan 3), Marigolds (Jan 3), Pepper (Jan 3), Basil (Jan 10), Tomato (Jan 10), +15 more. Direct sow from: Kohlrabi (Jan 3), Cilantro (Jan 17), Turnip (Jan 17), Carrots (Jan 24), Potatoes (Jan 31). Transplant from: Broccoli (Jan 17), Brussel Sprouts (Jan 17), Cabbage (Jan 17), Collards (Jan 17), Kale (Jan 17), Lettuce (Jan 17), +4 more. Plant: Strawberry (Jan 10). |
| February | Direct sow from: Sunflowers (Feb 14), Beans (Feb 21), Pole Beans (Feb 21). Transplant from: Bok Choy (Feb 7), Cauliflower (Feb 7), Cosmos (Feb 14), Lavender (Feb 14), Marigolds (Feb 14), Mint (Feb 14), +24 more. Last frost around February 14. |
| March | Transplant from: Basil (Mar 7). |
| 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 8), Pumpkin (Jul 8), Cantaloupe (Jul 16), Celery (Jul 16), Melons (Jul 16), Spaghetti Squash (Jul 18), +5 more. |
| August | Last sowing dates: Corn (Aug 2), Sunflowers (Aug 14), Brussel Sprouts (Aug 19), Pole Beans (Aug 19), Basil (Aug 24), Cosmos (Aug 24), +9 more. |
| September | Last sowing dates: Marigolds (Sep 3), Parsley (Sep 4), Peas (Sep 9), Cabbage (Sep 18), Carrots (Sep 18), Beets (Sep 19), +8 more. |
| October | Last sowing dates: Kale (Oct 3), Kohlrabi (Oct 3), Turnip (Oct 8), Arugula (Oct 18), Spinach (Oct 18), Radish (Oct 19). |
| November | Start indoors: Chives (Nov 22), Lavender (Nov 22), Onion (Nov 22), Rosemary (Nov 22). Direct sow from: Garlic (Nov 20). First frost around November 20. |
| December | Start indoors: Celery (Dec 6), Collards (Dec 6), Kale (Dec 6), Oregano (Dec 6), Parsley (Dec 6), Scallions (Dec 6), +9 more. Direct sow from: Arugula (Dec 20), Beets (Dec 20), Dill (Dec 20), Peas (Dec 20), Radish (Dec 20), Spinach (Dec 20). Last sowing dates: Garlic (Dec 11). |
Frequently Asked Questions
What is the last frost date for Twentynine Palms, CA (ZIP 92277)?
The median last spring frost date for Twentynine Palms, CA (ZIP code 92277) is around February 14. 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 4; one in ten it runs past March 26.
What is the first fall frost date in Twentynine Palms, CA?
The median first fall frost date for Twentynine Palms, CA is around November 20. 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 Twentynine Palms, CA?
The frost-free growing season in Twentynine Palms is about 279 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 Twentynine Palms (279 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 Twentynine Palms, CA?
Twentynine Palms, 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 Twentynine Palms, CA?
Start tomatoes indoors Jan 10 and plant out Feb 28 in Twentynine Palms. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Twentynine Palms?
Two: plant Jan 17 and again by Sep 29; both mature before Nov 27.
When do I plant garlic in Twentynine Palms?
Nov 20 to Dec 11; it overwinters and is ready the following summer.
Can I get two tomato crops in Twentynine Palms?
Yes: plant out Feb 28 for a summer crop, and set out a second round of transplants by Jul 21 for a fall crop.
Which nearby ZIP has a longer season?
Coachella (ZIP 92236) has 305 frost-free days, 26 more than Twentynine Palms (ZIP 92277). See Coachella ZIP 92236 frost dates
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