Frost Dates for Green Valley, AZ 85622
Green Valley has 2 ZIP codes. The Green Valley, AZ frost page lists all of them with their dates.
Last spring frost March 29 · First fall frost November 9 · 225 frost-free days · USDA Zone 9a
ZIP 85622 has about 6,520 people, one of 2 ZIP codes in Green Valley.
Long season: 225 frost-free days. Spring frost risk spans March 7–April 20 (44 days). Fall frost risk spans October 24–November 24 (31 days).
Frost probability for 85622
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 20 | March 29 | March 7 |
| Fall (first frost) | October 24 | November 9 | November 24 |
Dates come from NOAA 1971–2000 freeze probabilities at ANVIL RCH (33.9 km away); the 50% date is the median year.
Which crops fit a 225-day season in Green Valley
In Green Valley (225 frost-free days, a 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 22 | Apr 12–Apr 19 | 183 | fits: 80 days to maturity, 183 available after Apr 12. | Jul 10 |
| Pepper | Feb 15 | Apr 12–Apr 19 | 183 | fits: 75 days to maturity, 183 available after Apr 12. | Jul 15 |
| Lettuce | Feb 1 | Mar 1–Mar 8 | 260 | two-plantings: Plant Mar 1 and again by Sep 18; both mature before Nov 16. | Sep 18 |
| Carrots | — | Mar 8–Mar 15 | 267 | fits: 70 days to maturity, 267 available after Mar 8. | Sep 7 |
| Cucumber | Mar 8 | Apr 12–Apr 19 | 197 | two-plantings: Plant Apr 12 and again by Aug 13; both mature before Oct 26. | Aug 13 |
| Beans | — | Apr 5–Apr 19 | 211 | two-plantings: Plant Apr 5 and again by Aug 20; both mature before Nov 2. | Aug 20 |
| Peas | — | Feb 1–Apr 12 | 288 | fits: 65 days to maturity, 288 available after Feb 1. | Aug 29 |
| Zucchini | Mar 15 | Apr 12–Apr 19 | 197 | two-plantings: Plant Apr 12 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Onion | Jan 4 | Mar 1–Mar 15 | 260 | fits: 100 days to maturity, 260 available after Mar 1. | — |
| Spinach | — | Feb 1–Mar 22 | 302 | two-plantings: Plant Feb 1 and again by Oct 7; both mature before Nov 30. | Oct 7 |
| Kale | Jan 18 | Mar 1–Mar 15 | 274 | two-plantings: Plant Mar 1 and again by Sep 22; both mature before Nov 30. | Sep 22 |
| Broccoli | Feb 1 | Mar 1–Mar 15 | 260 | fits: 80 days to maturity, 260 available after Mar 1. | Aug 14 |
| Cabbage | Feb 1 | Mar 1–Mar 15 | 274 | fits: 70 days to maturity, 274 available after Mar 1. | Sep 7 |
| Radish | — | Feb 1–Apr 26 | 288 | two-plantings: Plant Feb 1 and again by Oct 8; both mature before Nov 16. | Oct 8 |
| Beets | — | Feb 1–Apr 26 | 288 | two-plantings: Plant Feb 1 and again by Sep 8; both mature before Nov 16. | Sep 8 |
| Potatoes | — | Mar 15–Mar 22 | 246 | fits: 90 days to maturity, 246 available after Mar 15. | — |
| Garlic | — | Nov 9 | 330 | overwinter: Plant Nov 9 to Nov 30; harvest the following summer. | Nov 30 |
| Strawberry | — | Feb 22–Apr 19 | 281 | perennial: A perennial: plant Feb 22; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 1 | Apr 5–Apr 12 | 197 | fits: 75 days to maturity, 197 available after Apr 5. | Jul 22 |
| Pumpkin | Mar 15 | Apr 12–Apr 12 | 190 | fits: 100 days to maturity, 190 available after Apr 12. | Jun 27 |
| Cauliflower | Feb 15 | Mar 22–Apr 5 | 239 | fits: 75 days to maturity, 239 available after Mar 22. | Aug 19 |
| Swiss Chard | Feb 1 | Mar 15–Mar 15 | 246 | two-plantings: Plant Mar 15 and again by Sep 8; both mature before Nov 16. | Sep 8 |
| Arugula | — | Feb 1–Apr 26 | 302 | two-plantings: Plant Feb 1 and again by Oct 7; both mature before Nov 30. | Oct 7 |
| Brussel Sprouts | Feb 1 | Mar 1–Mar 15 | 274 | fits: 100 days to maturity, 274 available after Mar 1. | Aug 8 |
| Butternut Squash | Mar 15 | Apr 12–Apr 19 | 190 | fits: 100 days to maturity, 190 available after Apr 12. | Jun 27 |
| Eggplant | Feb 8 | Apr 12–Apr 19 | 183 | fits: 70 days to maturity, 183 available after Apr 12. | Jul 20 |
| Okra | Mar 1 | Apr 5–Apr 12 | 204 | two-plantings: Plant Apr 5 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Basil | Feb 22 | Apr 19–Apr 19 | 190 | two-plantings: Plant Apr 19 and again by Aug 13; both mature before Oct 26. | Aug 13 |
| Cilantro | — | Mar 1–Mar 22 | 260 | two-plantings: Plant Mar 1 and again by Sep 13; both mature before Nov 16. | Sep 13 |
| Parsley | Jan 18 | Apr 5–Apr 12 | 225 | fits: 70 days to maturity, 225 available after Apr 5. | Aug 24 |
| Celery | Jan 18 | Apr 5–Apr 19 | 225 | fits: 120 days to maturity, 225 available after Apr 5. | Jul 5 |
| Scallions | Jan 18 | Mar 1–Mar 15 | 274 | two-plantings: Plant Mar 1 and again by Sep 17; both mature before Nov 30. | Sep 17 |
| Turnip | — | Mar 1–Mar 15 | 274 | two-plantings: Plant Mar 1 and again by Sep 27; both mature before Nov 30. | Sep 27 |
| Kohlrabi | — | Feb 15–Mar 1 | 288 | two-plantings: Plant Feb 15 and again by Sep 22; both mature before Nov 30. | Sep 22 |
| Bok Choy | Mar 1 | Mar 22–Mar 29 | 239 | two-plantings: Plant Mar 22 and again by Sep 18; both mature before Nov 16. | Sep 18 |
| Collards | Jan 18 | Mar 1–Mar 15 | 274 | two-plantings: Plant Mar 1 and again by Sep 17; both mature before Nov 30. | Sep 17 |
| Cantaloupe | Mar 15 | Apr 12–Apr 19 | 183 | fits: 85 days to maturity, 183 available after Apr 12. | Jul 5 |
| Chives | Jan 4 | Apr 5–Apr 12 | 239 | fits: 90 days to maturity, 239 available after Apr 5. | — |
| Dill | — | Feb 1–Apr 26 | 288 | two-plantings: Plant Feb 1 and again by Sep 8; both mature before Nov 16. | Sep 8 |
| Oregano | Jan 18 | Apr 5–Apr 12 | 239 | fits: 80 days to maturity, 239 available after Apr 5. | — |
| Rosemary | Jan 4 | Apr 5–Apr 12 | 225 | fits: 80 days to maturity, 225 available after Apr 5. | — |
| Sage | Feb 1 | Apr 5–Apr 12 | 239 | fits: 75 days to maturity, 239 available after Apr 5. | — |
| Thyme | Jan 18 | Apr 5–Apr 12 | 239 | fits: 90 days to maturity, 239 available after Apr 5. | — |
| Calendula | Feb 15 | Mar 15–Mar 29 | 246 | two-plantings: Plant Mar 15 and again by Sep 13; both mature before Nov 16. | Sep 13 |
| Cosmos | Mar 1 | Mar 29–Apr 12 | 211 | two-plantings: Plant Mar 29 and again by Aug 13; both mature before Oct 26. | Aug 13 |
| Lavender | Jan 4 | Mar 29–Apr 12 | 246 | fits: 90 days to maturity, 246 available after Mar 29. | — |
| Marigolds | Feb 15 | Mar 29–Apr 5 | 211 | two-plantings: Plant Mar 29 and again by Aug 23; both mature before Oct 26. | Aug 23 |
| Melons | Mar 15 | Apr 12–Apr 19 | 183 | fits: 85 days to maturity, 183 available after Apr 12. | Jul 5 |
| Mint | — | Mar 29–Apr 12 | 246 | fits: 90 days to maturity, 246 available after Mar 29. | — |
| Nasturtiums | Mar 1 | Mar 29–Apr 5 | 211 | two-plantings: Plant Mar 29 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Pole Beans | — | Apr 5–Apr 19 | 204 | fits: 65 days to maturity, 204 available after Apr 5. | Aug 8 |
| Spaghetti Squash | Mar 15 | Apr 12–Apr 19 | 190 | fits: 90 days to maturity, 190 available after Apr 12. | Jul 7 |
| Sunflowers | — | Mar 29–Apr 12 | 211 | fits: 70 days to maturity, 211 available after Mar 29. | Aug 3 |
| Tomatillos | Feb 1 | Apr 5–Apr 12 | 190 | fits: 75 days to maturity, 190 available after Apr 5. | Jul 15 |
| Watermelon | Mar 15 | Apr 5–Apr 12 | 190 | fits: 80 days to maturity, 190 available after Apr 5. | Jul 10 |
| Yellow Squash | Mar 15 | Apr 12–Apr 19 | 197 | two-plantings: Plant Apr 12 and again by Aug 18; both mature before Oct 26. | Aug 18 |
| Zinnias | Mar 1 | Mar 29–Apr 12 | 211 | two-plantings: Plant Mar 29 and again by Aug 13; both mature before Oct 26. | Aug 13 |
Month by month in Green Valley
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 4), Lavender (Jan 4), Onion (Jan 4), Rosemary (Jan 4), Celery (Jan 18), Collards (Jan 18), +5 more. |
| February | Start indoors: Broccoli (Feb 1), Brussel Sprouts (Feb 1), Cabbage (Feb 1), Lettuce (Feb 1), Sage (Feb 1), Swiss Chard (Feb 1), +8 more. Direct sow from: Arugula (Feb 1), Beets (Feb 1), Dill (Feb 1), Peas (Feb 1), Radish (Feb 1), Spinach (Feb 1), +1 more. Plant: Strawberry (Feb 22). |
| March | Start indoors: Bok Choy (Mar 1), Corn (Mar 1), Cosmos (Mar 1), Nasturtiums (Mar 1), Okra (Mar 1), Zinnias (Mar 1), +9 more. Direct sow from: Cilantro (Mar 1), Turnip (Mar 1), Carrots (Mar 8), Potatoes (Mar 15), Sunflowers (Mar 29). Transplant from: Broccoli (Mar 1), Brussel Sprouts (Mar 1), Cabbage (Mar 1), Collards (Mar 1), Kale (Mar 1), Lettuce (Mar 1), +12 more. Last frost around March 29. |
| April | Direct sow from: Beans (Apr 5), Pole Beans (Apr 5). Transplant from: Celery (Apr 5), Chives (Apr 5), Corn (Apr 5), Okra (Apr 5), Oregano (Apr 5), Parsley (Apr 5), +17 more. |
| May | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| June | Last sowing dates: Butternut Squash (Jun 27), Pumpkin (Jun 27). |
| July | Last sowing dates: Cantaloupe (Jul 5), Celery (Jul 5), Melons (Jul 5), Spaghetti Squash (Jul 7), Tomato (Jul 10), Watermelon (Jul 10), +4 more. |
| August | Last sowing dates: Sunflowers (Aug 3), Brussel Sprouts (Aug 8), Pole Beans (Aug 8), Basil (Aug 13), Cosmos (Aug 13), Cucumber (Aug 13), +11 more. |
| September | Last sowing dates: Cabbage (Sep 7), Carrots (Sep 7), Beets (Sep 8), Dill (Sep 8), Swiss Chard (Sep 8), Calendula (Sep 13), +8 more. |
| October | Last sowing dates: Arugula (Oct 7), Spinach (Oct 7), Radish (Oct 8). |
| November | Direct sow from: Garlic (Nov 9). First frost around November 9. Last sowing dates: Garlic (Nov 30). |
| December | Harvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year. |
Frequently Asked Questions
What is the last frost date for Green Valley, AZ (ZIP 85622)?
The median last spring frost date for Green Valley, AZ (ZIP code 85622) is around March 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 March 7; 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 9. 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 24 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 225 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 (225 frost-free days, a 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 22 and plant out Apr 12 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 Mar 1 and again by Sep 18; both mature before Nov 16.
When do I plant garlic in Green Valley?
Nov 9 to Nov 30; it overwinters and is ready the following summer.
Can I get two tomato crops in Green Valley?
Yes: plant out Apr 12 for a summer crop, and set out a second round of transplants by Jul 10 for a fall crop.
Which nearby ZIP has a longer season?
Sahuarita (ZIP 85629) has 286 frost-free days, 61 more than Green Valley (ZIP 85622). See Sahuarita ZIP 85629 frost dates
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