Frost Dates for Green Valley, AZ 85614
Last spring frost March 16 · First fall frost November 21 · 250 frost-free days · USDA Zone 9a
ZIP 85614 has about 25,400 people, the largest of 2 ZIP codes in Green Valley.
Very long season: 250 frost-free days. Spring frost risk spans February 9–April 20 (70 days). Fall frost risk spans October 31–December 12 (42 days).
Frost probability for 85614
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 20 | March 16 | February 9 |
| Fall (first frost) | October 31 | November 21 | December 12 |
Dates come from NOAA 1971–2000 freeze probabilities at SANTA RITA EXP RANGE (9.6 km away); the 50% date is the median year.
Frost dates by ZIP code in Green Valley, AZ
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 85614 | March 16 | November 21 | 9a |
| 85622 | March 29 | November 9 | 9a |
Which crops fit a 250-day season in Green Valley
In Green Valley (250 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 | Feb 9 | Mar 30–Apr 6 | 208 | fits: 80 days to maturity, 208 available after Mar 30. | Jul 22 |
| Pepper | Feb 2 | Mar 30–Apr 6 | 208 | fits: 75 days to maturity, 208 available after Mar 30. | Jul 27 |
| Lettuce | Jan 19 | Feb 16–Feb 23 | 285 | two-plantings: Plant Feb 16 and again by Sep 30; both mature before Nov 28. | Sep 30 |
| Carrots | — | Feb 23–Mar 2 | 292 | fits: 70 days to maturity, 292 available after Feb 23. | Sep 19 |
| Cucumber | Feb 23 | Mar 30–Apr 6 | 222 | two-plantings: Plant Mar 30 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Beans | — | Mar 23–Apr 6 | 236 | two-plantings: Plant Mar 23 and again by Sep 1; both mature before Nov 14. | Sep 1 |
| Peas | — | Jan 19–Mar 30 | 313 | fits: 65 days to maturity, 313 available after Jan 19. | Sep 10 |
| Zucchini | Mar 2 | Mar 30–Apr 6 | 222 | two-plantings: Plant Mar 30 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Onion | Dec 22 | Feb 16–Mar 2 | 285 | fits: 100 days to maturity, 285 available after Feb 16. | — |
| Spinach | — | Jan 19–Mar 9 | 327 | two-plantings: Plant Jan 19 and again by Oct 19; both mature before Dec 12. | Oct 19 |
| Kale | Jan 5 | Feb 16–Mar 2 | 299 | two-plantings: Plant Feb 16 and again by Oct 4; both mature before Dec 12. | Oct 4 |
| Broccoli | Jan 19 | Feb 16–Mar 2 | 285 | fits: 80 days to maturity, 285 available after Feb 16. | Aug 26 |
| Cabbage | Jan 19 | Feb 16–Mar 2 | 299 | fits: 70 days to maturity, 299 available after Feb 16. | Sep 19 |
| Radish | — | Jan 19–Apr 13 | 313 | two-plantings: Plant Jan 19 and again by Oct 20; both mature before Nov 28. | Oct 20 |
| Beets | — | Jan 19–Apr 13 | 313 | two-plantings: Plant Jan 19 and again by Sep 20; both mature before Nov 28. | Sep 20 |
| Potatoes | — | Mar 2–Mar 9 | 271 | fits: 90 days to maturity, 271 available after Mar 2. | — |
| Garlic | — | Nov 21 | 355 | overwinter: Plant Nov 21 to Dec 12; harvest the following summer. | Dec 12 |
| Strawberry | — | Feb 9–Apr 6 | 306 | perennial: A perennial: plant Feb 9; it fruits from the following year and keeps producing for several years. | — |
| Corn | Feb 16 | Mar 23–Mar 30 | 222 | fits: 75 days to maturity, 222 available after Mar 23. | Aug 3 |
| Pumpkin | Mar 2 | Mar 30–Mar 30 | 215 | fits: 100 days to maturity, 215 available after Mar 30. | Jul 9 |
| Cauliflower | Feb 2 | Mar 9–Mar 23 | 264 | fits: 75 days to maturity, 264 available after Mar 9. | Aug 31 |
| Swiss Chard | Jan 19 | Mar 2–Mar 2 | 271 | two-plantings: Plant Mar 2 and again by Sep 20; both mature before Nov 28. | Sep 20 |
| Arugula | — | Jan 19–Apr 13 | 327 | two-plantings: Plant Jan 19 and again by Oct 19; both mature before Dec 12. | Oct 19 |
| Brussel Sprouts | Jan 19 | Feb 16–Mar 2 | 299 | fits: 100 days to maturity, 299 available after Feb 16. | Aug 20 |
| Butternut Squash | Mar 2 | Mar 30–Apr 6 | 215 | fits: 100 days to maturity, 215 available after Mar 30. | Jul 9 |
| Eggplant | Jan 26 | Mar 30–Apr 6 | 208 | fits: 70 days to maturity, 208 available after Mar 30. | Aug 1 |
| Okra | Feb 16 | Mar 23–Mar 30 | 229 | two-plantings: Plant Mar 23 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Basil | Feb 9 | Apr 6–Apr 6 | 215 | two-plantings: Plant Apr 6 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Cilantro | — | Feb 16–Mar 9 | 285 | two-plantings: Plant Feb 16 and again by Sep 25; both mature before Nov 28. | Sep 25 |
| Parsley | Jan 5 | Mar 23–Mar 30 | 250 | fits: 70 days to maturity, 250 available after Mar 23. | Sep 5 |
| Celery | Jan 5 | Mar 23–Apr 6 | 250 | fits: 120 days to maturity, 250 available after Mar 23. | Jul 17 |
| Scallions | Jan 5 | Feb 16–Mar 2 | 299 | two-plantings: Plant Feb 16 and again by Sep 29; both mature before Dec 12. | Sep 29 |
| Turnip | — | Feb 16–Mar 2 | 299 | two-plantings: Plant Feb 16 and again by Oct 9; both mature before Dec 12. | Oct 9 |
| Kohlrabi | — | Feb 2–Feb 16 | 313 | two-plantings: Plant Feb 2 and again by Oct 4; both mature before Dec 12. | Oct 4 |
| Bok Choy | Feb 16 | Mar 9–Mar 16 | 264 | two-plantings: Plant Mar 9 and again by Sep 30; both mature before Nov 28. | Sep 30 |
| Collards | Jan 5 | Feb 16–Mar 2 | 299 | two-plantings: Plant Feb 16 and again by Sep 29; both mature before Dec 12. | Sep 29 |
| Cantaloupe | Mar 2 | Mar 30–Apr 6 | 208 | fits: 85 days to maturity, 208 available after Mar 30. | Jul 17 |
| Chives | Dec 22 | Mar 23–Mar 30 | 264 | fits: 90 days to maturity, 264 available after Mar 23. | — |
| Dill | — | Jan 19–Apr 13 | 313 | two-plantings: Plant Jan 19 and again by Sep 20; both mature before Nov 28. | Sep 20 |
| Oregano | Jan 5 | Mar 23–Mar 30 | 264 | fits: 80 days to maturity, 264 available after Mar 23. | — |
| Rosemary | Dec 22 | Mar 23–Mar 30 | 250 | fits: 80 days to maturity, 250 available after Mar 23. | — |
| Sage | Jan 19 | Mar 23–Mar 30 | 264 | fits: 75 days to maturity, 264 available after Mar 23. | — |
| Thyme | Jan 5 | Mar 23–Mar 30 | 264 | fits: 90 days to maturity, 264 available after Mar 23. | — |
| Calendula | Feb 2 | Mar 2–Mar 16 | 271 | two-plantings: Plant Mar 2 and again by Sep 25; both mature before Nov 28. | Sep 25 |
| Cosmos | Feb 16 | Mar 16–Mar 30 | 236 | two-plantings: Plant Mar 16 and again by Aug 25; both mature before Nov 7. | Aug 25 |
| Lavender | Dec 22 | Mar 16–Mar 30 | 271 | fits: 90 days to maturity, 271 available after Mar 16. | — |
| Marigolds | Feb 2 | Mar 16–Mar 23 | 236 | two-plantings: Plant Mar 16 and again by Sep 4; both mature before Nov 7. | Sep 4 |
| Melons | Mar 2 | Mar 30–Apr 6 | 208 | fits: 85 days to maturity, 208 available after Mar 30. | Jul 17 |
| Mint | — | Mar 16–Mar 30 | 271 | fits: 90 days to maturity, 271 available after Mar 16. | — |
| Nasturtiums | Feb 16 | Mar 16–Mar 23 | 236 | two-plantings: Plant Mar 16 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Pole Beans | — | Mar 23–Apr 6 | 229 | fits: 65 days to maturity, 229 available after Mar 23. | Aug 20 |
| Spaghetti Squash | Mar 2 | Mar 30–Apr 6 | 215 | fits: 90 days to maturity, 215 available after Mar 30. | Jul 19 |
| Sunflowers | — | Mar 16–Mar 30 | 236 | fits: 70 days to maturity, 236 available after Mar 16. | Aug 15 |
| Tomatillos | Jan 19 | Mar 23–Mar 30 | 215 | fits: 75 days to maturity, 215 available after Mar 23. | Jul 27 |
| Watermelon | Mar 2 | Mar 23–Mar 30 | 215 | fits: 80 days to maturity, 215 available after Mar 23. | Jul 22 |
| Yellow Squash | Mar 2 | Mar 30–Apr 6 | 222 | two-plantings: Plant Mar 30 and again by Aug 30; both mature before Nov 7. | Aug 30 |
| Zinnias | Feb 16 | Mar 16–Mar 30 | 236 | two-plantings: Plant Mar 16 and again by Aug 25; both mature before Nov 7. | Aug 25 |
Month by month in Green Valley
| Month | What to do |
|---|---|
| January | Start indoors: Celery (Jan 5), Collards (Jan 5), Kale (Jan 5), Oregano (Jan 5), Parsley (Jan 5), Scallions (Jan 5), +9 more. Direct sow from: Arugula (Jan 19), Beets (Jan 19), Dill (Jan 19), Peas (Jan 19), Radish (Jan 19), Spinach (Jan 19). |
| February | Start indoors: Calendula (Feb 2), Cauliflower (Feb 2), Marigolds (Feb 2), Pepper (Feb 2), Basil (Feb 9), Tomato (Feb 9), +7 more. Direct sow from: Kohlrabi (Feb 2), Cilantro (Feb 16), Turnip (Feb 16), Carrots (Feb 23). Transplant from: Broccoli (Feb 16), Brussel Sprouts (Feb 16), Cabbage (Feb 16), Collards (Feb 16), Kale (Feb 16), Lettuce (Feb 16), +2 more. Plant: Strawberry (Feb 9). |
| March | Start indoors: Butternut Squash (Mar 2), Cantaloupe (Mar 2), Melons (Mar 2), Pumpkin (Mar 2), Spaghetti Squash (Mar 2), Watermelon (Mar 2), +2 more. Direct sow from: Potatoes (Mar 2), Sunflowers (Mar 16), Beans (Mar 23), Pole Beans (Mar 23). Transplant from: Calendula (Mar 2), Swiss Chard (Mar 2), Bok Choy (Mar 9), Cauliflower (Mar 9), Cosmos (Mar 16), Lavender (Mar 16), +26 more. Last frost around March 16. |
| April | Transplant from: Basil (Apr 6). |
| May | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| June | Harvest regularly to encourage production. Monitor for pests and disease. |
| July | Last sowing dates: Butternut Squash (Jul 9), Pumpkin (Jul 9), Cantaloupe (Jul 17), Celery (Jul 17), Melons (Jul 17), Spaghetti Squash (Jul 19), +4 more. |
| August | Last sowing dates: Eggplant (Aug 1), Corn (Aug 3), Sunflowers (Aug 15), Brussel Sprouts (Aug 20), Pole Beans (Aug 20), Basil (Aug 25), +9 more. |
| September | Last sowing dates: Beans (Sep 1), Marigolds (Sep 4), Parsley (Sep 5), Peas (Sep 10), Cabbage (Sep 19), Carrots (Sep 19), +9 more. |
| October | Last sowing dates: Kale (Oct 4), Kohlrabi (Oct 4), Turnip (Oct 9), Arugula (Oct 19), Spinach (Oct 19), Radish (Oct 20). |
| November | Direct sow from: Garlic (Nov 21). First frost around November 21. |
| December | Start indoors: Chives (Dec 22), Lavender (Dec 22), Onion (Dec 22), Rosemary (Dec 22). Last sowing dates: Garlic (Dec 12). |
Frequently Asked Questions
What is the last frost date for Green Valley, AZ (ZIP 85614)?
The median last spring frost date for Green Valley, AZ (ZIP code 85614) is around March 16. 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 February 9; one in ten it runs past April 20.
What is the first fall frost date in Green Valley, AZ?
The median first fall frost date for Green Valley, AZ is around November 21. 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 October 31 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Green Valley, AZ?
The frost-free growing season in Green Valley is about 250 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 Green Valley (250 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 Green Valley, AZ?
Green Valley, 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 Green Valley, AZ?
Start tomatoes indoors Feb 9 and plant out Mar 30 in Green Valley. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Green Valley?
Two: plant Feb 16 and again by Sep 30; both mature before Nov 28.
When do I plant garlic in Green Valley?
Nov 21 to Dec 12; it overwinters and is ready the following summer.
Can I get two tomato crops in Green Valley?
Yes: plant out Mar 30 for a summer crop, and set out a second round of transplants by Jul 22 for a fall crop.
Which nearby ZIP has a longer season?
Sahuarita (ZIP 85629) has 286 frost-free days, 36 more than Green Valley (ZIP 85614). See Sahuarita ZIP 85629 frost dates
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