Frost Dates for Banning, CA 92220
Last spring frost May 29 · First fall frost October 13 · 137 frost-free days · USDA Zone 9b
ZIP 92220 has about 33,800 people.
Moderate season: 137 frost-free days. Spring frost risk spans May 9–June 19 (41 days). Fall frost risk spans September 18–November 6 (49 days).
Frost probability for 92220
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | June 19 | May 29 | May 9 |
| Fall (first frost) | September 18 | October 13 | November 6 |
Dates come from NOAA 1971–2000 freeze probabilities at IDYLLWILD FIRE DEPT (23.7 km away); the 50% date is the median year.
Which crops fit a 137-day season in Banning
In Banning (137 frost-free days, a moderate season), 39 of 56 planner crops fit outright, 16 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 24 | Jun 12–Jun 19 | 95 | fits: 80 days to maturity, 95 available after Jun 12. | Jun 13 |
| Pepper | Apr 17 | Jun 12–Jun 19 | 95 | fits: 75 days to maturity, 95 available after Jun 12. | Jun 18 |
| Lettuce | Apr 3 | May 1–May 8 | 172 | two-plantings: Plant May 1 and again by Aug 22; both mature before Oct 20. | Aug 22 |
| Carrots | — | May 8–May 15 | 179 | fits: 70 days to maturity, 179 available after May 8. | Aug 11 |
| Cucumber | May 8 | Jun 12–Jun 19 | 109 | fits: 60 days to maturity, 109 available after Jun 12. | Jul 17 |
| Beans | — | Jun 5–Jun 19 | 123 | fits: 60 days to maturity, 123 available after Jun 5. | Jul 24 |
| Peas | — | Apr 3–Jun 12 | 200 | fits: 65 days to maturity, 200 available after Apr 3. | Aug 2 |
| Zucchini | May 15 | Jun 12–Jun 19 | 109 | fits: 55 days to maturity, 109 available after Jun 12. | Jul 22 |
| Onion | Mar 6 | May 1–May 15 | 172 | fits: 100 days to maturity, 172 available after May 1. | — |
| Spinach | — | Apr 3–May 22 | 214 | two-plantings: Plant Apr 3 and again by Sep 10; both mature before Nov 3. | Sep 10 |
| Kale | Mar 20 | May 1–May 15 | 186 | two-plantings: Plant May 1 and again by Aug 26; both mature before Nov 3. | Aug 26 |
| Broccoli | Apr 3 | May 1–May 15 | 172 | fits: 80 days to maturity, 172 available after May 1. | Jul 18 |
| Cabbage | Apr 3 | May 1–May 15 | 186 | fits: 70 days to maturity, 186 available after May 1. | Aug 11 |
| Radish | — | Apr 3–Jun 26 | 200 | two-plantings: Plant Apr 3 and again by Sep 11; both mature before Oct 20. | Sep 11 |
| Beets | — | Apr 3–Jun 26 | 200 | two-plantings: Plant Apr 3 and again by Aug 12; both mature before Oct 20. | Aug 12 |
| Potatoes | — | May 15–May 22 | 158 | fits: 90 days to maturity, 158 available after May 15. | — |
| Garlic | — | Oct 13 | 242 | overwinter: Plant Oct 13 to Nov 3; harvest the following summer. | Nov 3 |
| Strawberry | — | Apr 24–Jun 19 | 193 | perennial: A perennial: plant Apr 24; it fruits from the following year and keeps producing for several years. | — |
| Corn | May 1 | Jun 5–Jun 12 | 109 | fits: 75 days to maturity, 109 available after Jun 5. | Jun 25 |
| Pumpkin | May 15 | Jun 12–Jun 12 | 102 | fits: 100 days to maturity, 102 available after Jun 12. | — |
| Cauliflower | Apr 17 | May 22–Jun 5 | 151 | fits: 75 days to maturity, 151 available after May 22. | Jul 23 |
| Swiss Chard | Apr 3 | May 15–May 15 | 158 | two-plantings: Plant May 15 and again by Aug 12; both mature before Oct 20. | Aug 12 |
| Arugula | — | Apr 3–Jun 26 | 214 | two-plantings: Plant Apr 3 and again by Sep 10; both mature before Nov 3. | Sep 10 |
| Brussel Sprouts | Apr 3 | May 1–May 15 | 186 | fits: 100 days to maturity, 186 available after May 1. | Jul 12 |
| Butternut Squash | May 15 | Jun 12–Jun 19 | 102 | fits: 100 days to maturity, 102 available after Jun 12. | — |
| Eggplant | Apr 10 | Jun 12–Jun 19 | 95 | fits: 70 days to maturity, 95 available after Jun 12. | Jun 23 |
| Okra | May 1 | Jun 5–Jun 12 | 116 | fits: 55 days to maturity, 116 available after Jun 5. | Jul 22 |
| Basil | Apr 24 | Jun 19–Jun 19 | 102 | fits: 60 days to maturity, 102 available after Jun 19. | Jul 17 |
| Cilantro | — | May 1–May 22 | 172 | two-plantings: Plant May 1 and again by Aug 17; both mature before Oct 20. | Aug 17 |
| Parsley | Mar 20 | Jun 5–Jun 12 | 137 | fits: 70 days to maturity, 137 available after Jun 5. | Jul 28 |
| Celery | Mar 20 | Jun 5–Jun 19 | 137 | fits: 120 days to maturity, 137 available after Jun 5. | Jun 8 |
| Scallions | Mar 20 | May 1–May 15 | 186 | two-plantings: Plant May 1 and again by Aug 21; both mature before Nov 3. | Aug 21 |
| Turnip | — | May 1–May 15 | 186 | two-plantings: Plant May 1 and again by Aug 31; both mature before Nov 3. | Aug 31 |
| Kohlrabi | — | Apr 17–May 1 | 200 | two-plantings: Plant Apr 17 and again by Aug 26; both mature before Nov 3. | Aug 26 |
| Bok Choy | May 1 | May 22–May 29 | 151 | two-plantings: Plant May 22 and again by Aug 22; both mature before Oct 20. | Aug 22 |
| Collards | Mar 20 | May 1–May 15 | 186 | two-plantings: Plant May 1 and again by Aug 21; both mature before Nov 3. | Aug 21 |
| Cantaloupe | May 15 | Jun 12–Jun 19 | 95 | fits: 85 days to maturity, 95 available after Jun 12. | — |
| Chives | Mar 6 | Jun 5–Jun 12 | 151 | fits: 90 days to maturity, 151 available after Jun 5. | — |
| Dill | — | Apr 3–Jun 26 | 200 | two-plantings: Plant Apr 3 and again by Aug 12; both mature before Oct 20. | Aug 12 |
| Oregano | Mar 20 | Jun 5–Jun 12 | 151 | fits: 80 days to maturity, 151 available after Jun 5. | — |
| Rosemary | Mar 6 | Jun 5–Jun 12 | 137 | fits: 80 days to maturity, 137 available after Jun 5. | — |
| Sage | Apr 3 | Jun 5–Jun 12 | 151 | fits: 75 days to maturity, 151 available after Jun 5. | — |
| Thyme | Mar 20 | Jun 5–Jun 12 | 151 | fits: 90 days to maturity, 151 available after Jun 5. | — |
| Calendula | Apr 17 | May 15–May 29 | 158 | two-plantings: Plant May 15 and again by Aug 17; both mature before Oct 20. | Aug 17 |
| Cosmos | May 1 | May 29–Jun 12 | 123 | fits: 60 days to maturity, 123 available after May 29. | Jul 17 |
| Lavender | Mar 6 | May 29–Jun 12 | 158 | fits: 90 days to maturity, 158 available after May 29. | — |
| Marigolds | Apr 17 | May 29–Jun 5 | 123 | two-plantings: Plant May 29 and again by Jul 27; both mature before Sep 29. | Jul 27 |
| Melons | May 15 | Jun 12–Jun 19 | 95 | fits: 85 days to maturity, 95 available after Jun 12. | — |
| Mint | — | May 29–Jun 12 | 158 | fits: 90 days to maturity, 158 available after May 29. | — |
| Nasturtiums | May 1 | May 29–Jun 5 | 123 | fits: 55 days to maturity, 123 available after May 29. | Jul 22 |
| Pole Beans | — | Jun 5–Jun 19 | 116 | fits: 65 days to maturity, 116 available after Jun 5. | Jul 12 |
| Spaghetti Squash | May 15 | Jun 12–Jun 19 | 102 | fits: 90 days to maturity, 102 available after Jun 12. | — |
| Sunflowers | — | May 29–Jun 12 | 123 | fits: 70 days to maturity, 123 available after May 29. | Jul 7 |
| Tomatillos | Apr 3 | Jun 5–Jun 12 | 102 | fits: 75 days to maturity, 102 available after Jun 5. | Jun 18 |
| Watermelon | May 15 | Jun 5–Jun 12 | 102 | fits: 80 days to maturity, 102 available after Jun 5. | Jun 13 |
| Yellow Squash | May 15 | Jun 12–Jun 19 | 109 | fits: 55 days to maturity, 109 available after Jun 12. | Jul 22 |
| Zinnias | May 1 | May 29–Jun 12 | 123 | fits: 60 days to maturity, 123 available after May 29. | Jul 17 |
Month by month in Banning
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start the slowest-growing crops indoors: onions, leeks, and celery (10–12 weeks before last frost). |
| March | Start indoors: Chives (Mar 6), Lavender (Mar 6), Onion (Mar 6), Rosemary (Mar 6), Celery (Mar 20), Collards (Mar 20), +5 more. |
| April | Start indoors: Broccoli (Apr 3), Brussel Sprouts (Apr 3), Cabbage (Apr 3), Lettuce (Apr 3), Sage (Apr 3), Swiss Chard (Apr 3), +8 more. Direct sow from: Arugula (Apr 3), Beets (Apr 3), Dill (Apr 3), Peas (Apr 3), Radish (Apr 3), Spinach (Apr 3), +1 more. Plant: Strawberry (Apr 24). |
| May | Start indoors: Bok Choy (May 1), Corn (May 1), Cosmos (May 1), Nasturtiums (May 1), Okra (May 1), Zinnias (May 1), +9 more. Direct sow from: Cilantro (May 1), Turnip (May 1), Carrots (May 8), Potatoes (May 15), Sunflowers (May 29). Transplant from: Broccoli (May 1), Brussel Sprouts (May 1), Cabbage (May 1), Collards (May 1), Kale (May 1), Lettuce (May 1), +12 more. Last frost around May 29. |
| June | Direct sow from: Beans (Jun 5), Pole Beans (Jun 5). Transplant from: Celery (Jun 5), Chives (Jun 5), Corn (Jun 5), Okra (Jun 5), Oregano (Jun 5), Parsley (Jun 5), +17 more. Last sowing dates: Celery (Jun 8), Tomato (Jun 13), Watermelon (Jun 13), Pepper (Jun 18), Tomatillos (Jun 18), Eggplant (Jun 23), +1 more. |
| July | Last sowing dates: Sunflowers (Jul 7), Brussel Sprouts (Jul 12), Pole Beans (Jul 12), Basil (Jul 17), Cosmos (Jul 17), Cucumber (Jul 17), +10 more. |
| August | Last sowing dates: Peas (Aug 2), Cabbage (Aug 11), Carrots (Aug 11), Beets (Aug 12), Dill (Aug 12), Swiss Chard (Aug 12), +9 more. |
| September | Last sowing dates: Arugula (Sep 10), Spinach (Sep 10), Radish (Sep 11). |
| October | Direct sow from: Garlic (Oct 13). First frost around October 13. |
| November | Last sowing dates: Garlic (Nov 3). |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Banning, CA (ZIP 92220)?
The median last spring frost date for Banning, CA (ZIP code 92220) is around May 29. 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 May 9; one in ten it runs past June 19.
What is the first fall frost date in Banning, CA?
The median first fall frost date for Banning, CA is around October 13. 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 September 18 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Banning, CA?
The frost-free growing season in Banning is about 137 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 Banning (137 frost-free days, a moderate season), 39 of 56 planner crops fit outright, 16 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Banning, CA?
Banning, 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 Banning, CA?
Start tomatoes indoors Apr 24 and plant out Jun 12 in Banning. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Banning?
Two: plant May 1 and again by Aug 22; both mature before Oct 20.
When do I plant garlic in Banning?
Oct 13 to Nov 3; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Beaumont (ZIP 92223) has 255 frost-free days, 118 more than Banning (ZIP 92220). See Beaumont ZIP 92223 frost dates
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