Frost Dates for Mesa, AZ 85215
Mesa has 13 ZIP codes. The Mesa, AZ frost page lists all of them with their dates.
Last spring frost January 26 · First fall frost December 19 · 327 frost-free days · USDA Zone 9b
ZIP 85215 has about 16,900 people, one of 13 ZIP codes in Mesa.
Very long season: 327 frost-free days.
Frost probability for 85215
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 17 | January 26 | — |
| Fall (first frost) | November 19 | December 19 | — |
Dates come from NOAA 1971–2000 freeze probabilities at MORMON FLAT (13.7 km away); the 50% date is the median year.
Which crops fit a 327-day season in Mesa
In Mesa (327 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 22 | Feb 9–Feb 16 | 285 | fits: 80 days to maturity, 285 available after Feb 9. | Aug 19 |
| Pepper | Dec 15 | Feb 9–Feb 16 | 285 | fits: 75 days to maturity, 285 available after Feb 9. | Aug 24 |
| Lettuce | Dec 1 | Dec 29–Jan 5 | 362 | two-plantings: Plant Dec 29 and again by Oct 28; both mature before Dec 26. | Oct 28 |
| Carrots | — | Jan 5–Jan 12 | 369 | fits: 70 days to maturity, 369 available after Jan 5. | Oct 17 |
| Cucumber | Jan 5 | Feb 9–Feb 16 | 299 | two-plantings: Plant Feb 9 and again by Sep 22; both mature before Dec 5. | Sep 22 |
| Beans | — | Feb 2–Feb 16 | 313 | two-plantings: Plant Feb 2 and again by Sep 29; both mature before Dec 12. | Sep 29 |
| Peas | — | Dec 1–Feb 9 | 390 | fits: 65 days to maturity, 390 available after Dec 1. | Oct 8 |
| Zucchini | Jan 12 | Feb 9–Feb 16 | 299 | two-plantings: Plant Feb 9 and again by Sep 27; both mature before Dec 5. | Sep 27 |
| Onion | Nov 3 | Dec 29–Jan 12 | 362 | fits: 100 days to maturity, 362 available after Dec 29. | — |
| Spinach | — | Dec 1–Jan 19 | 404 | two-plantings: Plant Dec 1 and again by Nov 16; both mature before Jan 9. | Nov 16 |
| Kale | Nov 17 | Dec 29–Jan 12 | 376 | two-plantings: Plant Dec 29 and again by Nov 1; both mature before Jan 9. | Nov 1 |
| Broccoli | Dec 1 | Dec 29–Jan 12 | 362 | fits: 80 days to maturity, 362 available after Dec 29. | Sep 23 |
| Cabbage | Dec 1 | Dec 29–Jan 12 | 376 | fits: 70 days to maturity, 376 available after Dec 29. | Oct 17 |
| Radish | — | Dec 1–Feb 23 | 390 | two-plantings: Plant Dec 1 and again by Nov 17; both mature before Dec 26. | Nov 17 |
| Beets | — | Dec 1–Feb 23 | 390 | two-plantings: Plant Dec 1 and again by Oct 18; both mature before Dec 26. | Oct 18 |
| Potatoes | — | Jan 12–Jan 19 | 348 | fits: 90 days to maturity, 348 available after Jan 12. | — |
| Garlic | — | Dec 19 | 432 | overwinter: Plant Dec 19 to Jan 9; harvest the following summer. | Jan 9 |
| Strawberry | — | Dec 22–Feb 16 | 383 | perennial: A perennial: plant Dec 22; it fruits from the following year and keeps producing for several years. | — |
| Corn | Dec 29 | Feb 2–Feb 9 | 299 | fits: 75 days to maturity, 299 available after Feb 2. | Aug 31 |
| Pumpkin | Jan 12 | Feb 9–Feb 9 | 292 | fits: 100 days to maturity, 292 available after Feb 9. | Aug 6 |
| Cauliflower | Dec 15 | Jan 19–Feb 2 | 341 | fits: 75 days to maturity, 341 available after Jan 19. | Sep 28 |
| Swiss Chard | Dec 1 | Jan 12–Jan 12 | 348 | two-plantings: Plant Jan 12 and again by Oct 18; both mature before Dec 26. | Oct 18 |
| Arugula | — | Dec 1–Feb 23 | 404 | two-plantings: Plant Dec 1 and again by Nov 16; both mature before Jan 9. | Nov 16 |
| Brussel Sprouts | Dec 1 | Dec 29–Jan 12 | 376 | fits: 100 days to maturity, 376 available after Dec 29. | Sep 17 |
| Butternut Squash | Jan 12 | Feb 9–Feb 16 | 292 | fits: 100 days to maturity, 292 available after Feb 9. | Aug 6 |
| Eggplant | Dec 8 | Feb 9–Feb 16 | 285 | fits: 70 days to maturity, 285 available after Feb 9. | Aug 29 |
| Okra | Dec 29 | Feb 2–Feb 9 | 306 | two-plantings: Plant Feb 2 and again by Sep 27; both mature before Dec 5. | Sep 27 |
| Basil | Dec 22 | Feb 16–Feb 16 | 292 | two-plantings: Plant Feb 16 and again by Sep 22; both mature before Dec 5. | Sep 22 |
| Cilantro | — | Dec 29–Jan 19 | 362 | two-plantings: Plant Dec 29 and again by Oct 23; both mature before Dec 26. | Oct 23 |
| Parsley | Nov 17 | Feb 2–Feb 9 | 327 | fits: 70 days to maturity, 327 available after Feb 2. | Oct 3 |
| Celery | Nov 17 | Feb 2–Feb 16 | 327 | fits: 120 days to maturity, 327 available after Feb 2. | Aug 14 |
| Scallions | Nov 17 | Dec 29–Jan 12 | 376 | two-plantings: Plant Dec 29 and again by Oct 27; both mature before Jan 9. | Oct 27 |
| Turnip | — | Dec 29–Jan 12 | 376 | two-plantings: Plant Dec 29 and again by Nov 6; both mature before Jan 9. | Nov 6 |
| Kohlrabi | — | Dec 15–Dec 29 | 390 | two-plantings: Plant Dec 15 and again by Nov 1; both mature before Jan 9. | Nov 1 |
| Bok Choy | Dec 29 | Jan 19–Jan 26 | 341 | two-plantings: Plant Jan 19 and again by Oct 28; both mature before Dec 26. | Oct 28 |
| Collards | Nov 17 | Dec 29–Jan 12 | 376 | two-plantings: Plant Dec 29 and again by Oct 27; both mature before Jan 9. | Oct 27 |
| Cantaloupe | Jan 12 | Feb 9–Feb 16 | 285 | fits: 85 days to maturity, 285 available after Feb 9. | Aug 14 |
| Chives | Nov 3 | Feb 2–Feb 9 | 341 | fits: 90 days to maturity, 341 available after Feb 2. | — |
| Dill | — | Dec 1–Feb 23 | 390 | two-plantings: Plant Dec 1 and again by Oct 18; both mature before Dec 26. | Oct 18 |
| Oregano | Nov 17 | Feb 2–Feb 9 | 341 | fits: 80 days to maturity, 341 available after Feb 2. | — |
| Rosemary | Nov 3 | Feb 2–Feb 9 | 327 | fits: 80 days to maturity, 327 available after Feb 2. | — |
| Sage | Dec 1 | Feb 2–Feb 9 | 341 | fits: 75 days to maturity, 341 available after Feb 2. | — |
| Thyme | Nov 17 | Feb 2–Feb 9 | 341 | fits: 90 days to maturity, 341 available after Feb 2. | — |
| Calendula | Dec 15 | Jan 12–Jan 26 | 348 | two-plantings: Plant Jan 12 and again by Oct 23; both mature before Dec 26. | Oct 23 |
| Cosmos | Dec 29 | Jan 26–Feb 9 | 313 | two-plantings: Plant Jan 26 and again by Sep 22; both mature before Dec 5. | Sep 22 |
| Lavender | Nov 3 | Jan 26–Feb 9 | 348 | fits: 90 days to maturity, 348 available after Jan 26. | — |
| Marigolds | Dec 15 | Jan 26–Feb 2 | 313 | two-plantings: Plant Jan 26 and again by Oct 2; both mature before Dec 5. | Oct 2 |
| Melons | Jan 12 | Feb 9–Feb 16 | 285 | fits: 85 days to maturity, 285 available after Feb 9. | Aug 14 |
| Mint | — | Jan 26–Feb 9 | 348 | fits: 90 days to maturity, 348 available after Jan 26. | — |
| Nasturtiums | Dec 29 | Jan 26–Feb 2 | 313 | two-plantings: Plant Jan 26 and again by Sep 27; both mature before Dec 5. | Sep 27 |
| Pole Beans | — | Feb 2–Feb 16 | 306 | fits: 65 days to maturity, 306 available after Feb 2. | Sep 17 |
| Spaghetti Squash | Jan 12 | Feb 9–Feb 16 | 292 | fits: 90 days to maturity, 292 available after Feb 9. | Aug 16 |
| Sunflowers | — | Jan 26–Feb 9 | 313 | fits: 70 days to maturity, 313 available after Jan 26. | Sep 12 |
| Tomatillos | Dec 1 | Feb 2–Feb 9 | 292 | fits: 75 days to maturity, 292 available after Feb 2. | Aug 24 |
| Watermelon | Jan 12 | Feb 2–Feb 9 | 292 | fits: 80 days to maturity, 292 available after Feb 2. | Aug 19 |
| Yellow Squash | Jan 12 | Feb 9–Feb 16 | 299 | two-plantings: Plant Feb 9 and again by Sep 27; both mature before Dec 5. | Sep 27 |
| Zinnias | Dec 29 | Jan 26–Feb 9 | 313 | two-plantings: Plant Jan 26 and again by Sep 22; both mature before Dec 5. | Sep 22 |
Month by month in Mesa
| Month | What to do |
|---|---|
| January | Start indoors: Cucumber (Jan 5), Butternut Squash (Jan 12), Cantaloupe (Jan 12), Melons (Jan 12), Pumpkin (Jan 12), Spaghetti Squash (Jan 12), +3 more. Direct sow from: Carrots (Jan 5), Potatoes (Jan 12), Sunflowers (Jan 26). Transplant from: Calendula (Jan 12), Swiss Chard (Jan 12), Bok Choy (Jan 19), Cauliflower (Jan 19), Cosmos (Jan 26), Lavender (Jan 26), +4 more. Last frost around January 26. Last sowing dates: Garlic (Jan 9). |
| February | Direct sow from: Beans (Feb 2), Pole Beans (Feb 2). Transplant from: Celery (Feb 2), Chives (Feb 2), Corn (Feb 2), Okra (Feb 2), Oregano (Feb 2), Parsley (Feb 2), +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 | Direct sow carrots and beets for fall harvest. Start fall broccoli and kale indoors. |
| August | Last sowing dates: Butternut Squash (Aug 6), Pumpkin (Aug 6), Cantaloupe (Aug 14), Celery (Aug 14), Melons (Aug 14), Spaghetti Squash (Aug 16), +6 more. |
| September | Last sowing dates: Sunflowers (Sep 12), Brussel Sprouts (Sep 17), Pole Beans (Sep 17), Basil (Sep 22), Cosmos (Sep 22), Cucumber (Sep 22), +8 more. |
| October | Last sowing dates: Marigolds (Oct 2), Parsley (Oct 3), Peas (Oct 8), Cabbage (Oct 17), Carrots (Oct 17), Beets (Oct 18), +8 more. |
| November | Start indoors: Chives (Nov 3), Lavender (Nov 3), Onion (Nov 3), Rosemary (Nov 3), Celery (Nov 17), Collards (Nov 17), +5 more. Last sowing dates: Kale (Nov 1), Kohlrabi (Nov 1), Turnip (Nov 6), Arugula (Nov 16), Spinach (Nov 16), Radish (Nov 17). |
| December | Start indoors: Broccoli (Dec 1), Brussel Sprouts (Dec 1), Cabbage (Dec 1), Lettuce (Dec 1), Sage (Dec 1), Swiss Chard (Dec 1), +14 more. Direct sow from: Arugula (Dec 1), Beets (Dec 1), Dill (Dec 1), Peas (Dec 1), Radish (Dec 1), Spinach (Dec 1), +4 more. Transplant from: Broccoli (Dec 29), Brussel Sprouts (Dec 29), Cabbage (Dec 29), Collards (Dec 29), Kale (Dec 29), Lettuce (Dec 29), +2 more. Plant: Strawberry (Dec 22). First frost around December 19. |
Frequently Asked Questions
What is the last frost date for Mesa, AZ (ZIP 85215)?
The median last spring frost date for Mesa, AZ (ZIP code 85215) is around January 26. 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.
What is the first fall frost date in Mesa, AZ?
The median first fall frost date for Mesa, AZ is around December 19. 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 19 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Mesa, AZ?
The frost-free growing season in Mesa is about 327 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 Mesa (327 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 Mesa, AZ?
Mesa, AZ 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 Mesa, AZ?
Start tomatoes indoors Dec 22 and plant out Feb 9 in Mesa. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Mesa?
Two: plant Dec 29 and again by Oct 28; both mature before Dec 26.
When do I plant garlic in Mesa?
Dec 19 to Jan 9; it overwinters and is ready the following summer.
Can I get two tomato crops in Mesa?
Yes: plant out Feb 9 for a summer crop, and set out a second round of transplants by Aug 19 for a fall crop.
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- When to plant in Mesa, AZ: month-by-month guide
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- When to plant Cucumbers in AZ
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- When to plant Butternut Squash in AZ
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