Frost Dates for Casa Grande, AZ 85193
Casa Grande has 3 ZIP codes. The Casa Grande, AZ frost page lists all of them with their dates.
Last spring frost February 27 · First fall frost November 25 · 271 frost-free days · USDA Zone 9a
ZIP 85193 has about 4,120 people, one of 3 ZIP codes in Casa Grande.
Very long season: 271 frost-free days. Spring frost risk spans January 21–April 3 (72 days). Fall frost risk spans November 4–December 14 (40 days).
Frost probability for 85193
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 3 | February 27 | January 21 |
| Fall (first frost) | November 4 | November 25 | December 14 |
Dates come from NOAA 1971–2000 freeze probabilities at ELOY 4 NE (29.0 km away); the 50% date is the median year.
Which crops fit a 271-day season in Casa Grande
In Casa Grande (271 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 23 | Mar 13–Mar 20 | 229 | fits: 80 days to maturity, 229 available after Mar 13. | Jul 26 |
| Pepper | Jan 16 | Mar 13–Mar 20 | 229 | fits: 75 days to maturity, 229 available after Mar 13. | Jul 31 |
| Lettuce | Jan 2 | Jan 30–Feb 6 | 306 | two-plantings: Plant Jan 30 and again by Oct 4; both mature before Dec 2. | Oct 4 |
| Carrots | — | Feb 6–Feb 13 | 313 | fits: 70 days to maturity, 313 available after Feb 6. | Sep 23 |
| Cucumber | Feb 6 | Mar 13–Mar 20 | 243 | two-plantings: Plant Mar 13 and again by Aug 29; both mature before Nov 11. | Aug 29 |
| Beans | — | Mar 6–Mar 20 | 257 | two-plantings: Plant Mar 6 and again by Sep 5; both mature before Nov 18. | Sep 5 |
| Peas | — | Jan 2–Mar 13 | 334 | fits: 65 days to maturity, 334 available after Jan 2. | Sep 14 |
| Zucchini | Feb 13 | Mar 13–Mar 20 | 243 | two-plantings: Plant Mar 13 and again by Sep 3; both mature before Nov 11. | Sep 3 |
| Onion | Dec 5 | Jan 30–Feb 13 | 306 | fits: 100 days to maturity, 306 available after Jan 30. | — |
| Spinach | — | Jan 2–Feb 20 | 348 | two-plantings: Plant Jan 2 and again by Oct 23; both mature before Dec 16. | Oct 23 |
| Kale | Dec 19 | Jan 30–Feb 13 | 320 | two-plantings: Plant Jan 30 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Broccoli | Jan 2 | Jan 30–Feb 13 | 306 | fits: 80 days to maturity, 306 available after Jan 30. | Aug 30 |
| Cabbage | Jan 2 | Jan 30–Feb 13 | 320 | fits: 70 days to maturity, 320 available after Jan 30. | Sep 23 |
| Radish | — | Jan 2–Mar 27 | 334 | two-plantings: Plant Jan 2 and again by Oct 24; both mature before Dec 2. | Oct 24 |
| Beets | — | Jan 2–Mar 27 | 334 | two-plantings: Plant Jan 2 and again by Sep 24; both mature before Dec 2. | Sep 24 |
| Potatoes | — | Feb 13–Feb 20 | 292 | fits: 90 days to maturity, 292 available after Feb 13. | — |
| Garlic | — | Nov 25 | 376 | overwinter: Plant Nov 25 to Dec 16; harvest the following summer. | Dec 16 |
| Strawberry | — | Jan 23–Mar 20 | 327 | perennial: A perennial: plant Jan 23; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 30 | Mar 6–Mar 13 | 243 | fits: 75 days to maturity, 243 available after Mar 6. | Aug 7 |
| Pumpkin | Feb 13 | Mar 13–Mar 13 | 236 | fits: 100 days to maturity, 236 available after Mar 13. | Jul 13 |
| Cauliflower | Jan 16 | Feb 20–Mar 6 | 285 | fits: 75 days to maturity, 285 available after Feb 20. | Sep 4 |
| Swiss Chard | Jan 2 | Feb 13–Feb 13 | 292 | two-plantings: Plant Feb 13 and again by Sep 24; both mature before Dec 2. | Sep 24 |
| Arugula | — | Jan 2–Mar 27 | 348 | two-plantings: Plant Jan 2 and again by Oct 23; both mature before Dec 16. | Oct 23 |
| Brussel Sprouts | Jan 2 | Jan 30–Feb 13 | 320 | fits: 100 days to maturity, 320 available after Jan 30. | Aug 24 |
| Butternut Squash | Feb 13 | Mar 13–Mar 20 | 236 | fits: 100 days to maturity, 236 available after Mar 13. | Jul 13 |
| Eggplant | Jan 9 | Mar 13–Mar 20 | 229 | fits: 70 days to maturity, 229 available after Mar 13. | Aug 5 |
| Okra | Jan 30 | Mar 6–Mar 13 | 250 | two-plantings: Plant Mar 6 and again by Sep 3; both mature before Nov 11. | Sep 3 |
| Basil | Jan 23 | Mar 20–Mar 20 | 236 | two-plantings: Plant Mar 20 and again by Aug 29; both mature before Nov 11. | Aug 29 |
| Cilantro | — | Jan 30–Feb 20 | 306 | two-plantings: Plant Jan 30 and again by Sep 29; both mature before Dec 2. | Sep 29 |
| Parsley | Dec 19 | Mar 6–Mar 13 | 271 | fits: 70 days to maturity, 271 available after Mar 6. | Sep 9 |
| Celery | Dec 19 | Mar 6–Mar 20 | 271 | fits: 120 days to maturity, 271 available after Mar 6. | Jul 21 |
| Scallions | Dec 19 | Jan 30–Feb 13 | 320 | two-plantings: Plant Jan 30 and again by Oct 3; both mature before Dec 16. | Oct 3 |
| Turnip | — | Jan 30–Feb 13 | 320 | two-plantings: Plant Jan 30 and again by Oct 13; both mature before Dec 16. | Oct 13 |
| Kohlrabi | — | Jan 16–Jan 30 | 334 | two-plantings: Plant Jan 16 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Bok Choy | Jan 30 | Feb 20–Feb 27 | 285 | two-plantings: Plant Feb 20 and again by Oct 4; both mature before Dec 2. | Oct 4 |
| Collards | Dec 19 | Jan 30–Feb 13 | 320 | two-plantings: Plant Jan 30 and again by Oct 3; both mature before Dec 16. | Oct 3 |
| Cantaloupe | Feb 13 | Mar 13–Mar 20 | 229 | fits: 85 days to maturity, 229 available after Mar 13. | Jul 21 |
| Chives | Dec 5 | Mar 6–Mar 13 | 285 | fits: 90 days to maturity, 285 available after Mar 6. | — |
| Dill | — | Jan 2–Mar 27 | 334 | two-plantings: Plant Jan 2 and again by Sep 24; both mature before Dec 2. | Sep 24 |
| Oregano | Dec 19 | Mar 6–Mar 13 | 285 | fits: 80 days to maturity, 285 available after Mar 6. | — |
| Rosemary | Dec 5 | Mar 6–Mar 13 | 271 | fits: 80 days to maturity, 271 available after Mar 6. | — |
| Sage | Jan 2 | Mar 6–Mar 13 | 285 | fits: 75 days to maturity, 285 available after Mar 6. | — |
| Thyme | Dec 19 | Mar 6–Mar 13 | 285 | fits: 90 days to maturity, 285 available after Mar 6. | — |
| Calendula | Jan 16 | Feb 13–Feb 27 | 292 | two-plantings: Plant Feb 13 and again by Sep 29; both mature before Dec 2. | Sep 29 |
| Cosmos | Jan 30 | Feb 27–Mar 13 | 257 | two-plantings: Plant Feb 27 and again by Aug 29; both mature before Nov 11. | Aug 29 |
| Lavender | Dec 5 | Feb 27–Mar 13 | 292 | fits: 90 days to maturity, 292 available after Feb 27. | — |
| Marigolds | Jan 16 | Feb 27–Mar 6 | 257 | two-plantings: Plant Feb 27 and again by Sep 8; both mature before Nov 11. | Sep 8 |
| Melons | Feb 13 | Mar 13–Mar 20 | 229 | fits: 85 days to maturity, 229 available after Mar 13. | Jul 21 |
| Mint | — | Feb 27–Mar 13 | 292 | fits: 90 days to maturity, 292 available after Feb 27. | — |
| Nasturtiums | Jan 30 | Feb 27–Mar 6 | 257 | two-plantings: Plant Feb 27 and again by Sep 3; both mature before Nov 11. | Sep 3 |
| Pole Beans | — | Mar 6–Mar 20 | 250 | fits: 65 days to maturity, 250 available after Mar 6. | Aug 24 |
| Spaghetti Squash | Feb 13 | Mar 13–Mar 20 | 236 | fits: 90 days to maturity, 236 available after Mar 13. | Jul 23 |
| Sunflowers | — | Feb 27–Mar 13 | 257 | fits: 70 days to maturity, 257 available after Feb 27. | Aug 19 |
| Tomatillos | Jan 2 | Mar 6–Mar 13 | 236 | fits: 75 days to maturity, 236 available after Mar 6. | Jul 31 |
| Watermelon | Feb 13 | Mar 6–Mar 13 | 236 | fits: 80 days to maturity, 236 available after Mar 6. | Jul 26 |
| Yellow Squash | Feb 13 | Mar 13–Mar 20 | 243 | two-plantings: Plant Mar 13 and again by Sep 3; both mature before Nov 11. | Sep 3 |
| Zinnias | Jan 30 | Feb 27–Mar 13 | 257 | two-plantings: Plant Feb 27 and again by Aug 29; both mature before Nov 11. | Aug 29 |
Month by month in Casa Grande
| Month | What to do |
|---|---|
| January | Start indoors: Broccoli (Jan 2), Brussel Sprouts (Jan 2), Cabbage (Jan 2), Lettuce (Jan 2), Sage (Jan 2), Swiss Chard (Jan 2), +14 more. Direct sow from: Arugula (Jan 2), Beets (Jan 2), Dill (Jan 2), Peas (Jan 2), Radish (Jan 2), Spinach (Jan 2), +3 more. Transplant from: Broccoli (Jan 30), Brussel Sprouts (Jan 30), Cabbage (Jan 30), Collards (Jan 30), Kale (Jan 30), Lettuce (Jan 30), +2 more. Plant: Strawberry (Jan 23). |
| February | Start indoors: Cucumber (Feb 6), Butternut Squash (Feb 13), Cantaloupe (Feb 13), Melons (Feb 13), Pumpkin (Feb 13), Spaghetti Squash (Feb 13), +3 more. Direct sow from: Carrots (Feb 6), Potatoes (Feb 13), Sunflowers (Feb 27). Transplant from: Calendula (Feb 13), Swiss Chard (Feb 13), Bok Choy (Feb 20), Cauliflower (Feb 20), Cosmos (Feb 27), Lavender (Feb 27), +4 more. Last frost around February 27. |
| March | Direct sow from: Beans (Mar 6), Pole Beans (Mar 6). Transplant from: Celery (Mar 6), Chives (Mar 6), Corn (Mar 6), Okra (Mar 6), Oregano (Mar 6), Parsley (Mar 6), +17 more. |
| 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 13), Pumpkin (Jul 13), Cantaloupe (Jul 21), Celery (Jul 21), Melons (Jul 21), Spaghetti Squash (Jul 23), +4 more. |
| August | Last sowing dates: Eggplant (Aug 5), Corn (Aug 7), Sunflowers (Aug 19), Brussel Sprouts (Aug 24), Pole Beans (Aug 24), Basil (Aug 29), +4 more. |
| September | Last sowing dates: Nasturtiums (Sep 3), Okra (Sep 3), Yellow Squash (Sep 3), Zucchini (Sep 3), Cauliflower (Sep 4), Beans (Sep 5), +10 more. |
| October | Last sowing dates: Collards (Oct 3), Scallions (Oct 3), Bok Choy (Oct 4), Lettuce (Oct 4), Kale (Oct 8), Kohlrabi (Oct 8), +4 more. |
| November | Direct sow from: Garlic (Nov 25). First frost around November 25. |
| December | Start indoors: Chives (Dec 5), Lavender (Dec 5), Onion (Dec 5), Rosemary (Dec 5), Celery (Dec 19), Collards (Dec 19), +5 more. Last sowing dates: Garlic (Dec 16). |
Frequently Asked Questions
What is the last frost date for Casa Grande, AZ (ZIP 85193)?
The median last spring frost date for Casa Grande, AZ (ZIP code 85193) is around February 27. 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 21; one in ten it runs past April 3.
What is the first fall frost date in Casa Grande, AZ?
The median first fall frost date for Casa Grande, AZ is around November 25. 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 4 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Casa Grande, AZ?
The frost-free growing season in Casa Grande is about 271 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 Casa Grande (271 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 Casa Grande, AZ?
Casa Grande, AZ is in USDA hardiness zone 9a (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 Casa Grande, AZ?
Start tomatoes indoors Jan 23 and plant out Mar 13 in Casa Grande. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Casa Grande?
Two: plant Jan 30 and again by Oct 4; both mature before Dec 2.
When do I plant garlic in Casa Grande?
Nov 25 to Dec 16; it overwinters and is ready the following summer.
Can I get two tomato crops in Casa Grande?
Yes: plant out Mar 13 for a summer crop, and set out a second round of transplants by Jul 26 for a fall crop.
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