Frost Dates for Prescott, AZ 86305
Last spring frost May 7 · First fall frost October 18 · 164 frost-free days · USDA Zone 7b
ZIP 86305 has about 19,800 people, one of 4 ZIP codes in Prescott.
Moderate season: 164 frost-free days. Spring frost risk spans April 22–May 25 (33 days). Fall frost risk spans September 30–November 4 (35 days).
Frost probability for 86305
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 25 | May 7 | April 22 |
| Fall (first frost) | September 30 | October 18 | November 4 |
Dates come from NOAA 1971–2000 freeze probabilities at PRESCOTT (38.1 km away); the 50% date is the median year.
Which crops fit a 164-day season in Prescott
In Prescott (164 frost-free days, a moderate season), 31 of 56 planner crops fit outright, 24 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 2 | May 21–May 28 | 122 | fits: 80 days to maturity, 122 available after May 21. | Jun 18 |
| Pepper | Mar 26 | May 21–May 28 | 122 | fits: 75 days to maturity, 122 available after May 21. | Jun 23 |
| Lettuce | Mar 12 | Apr 9–Apr 16 | 199 | two-plantings: Plant Apr 9 and again by Aug 27; both mature before Oct 25. | Aug 27 |
| Carrots | — | Apr 16–Apr 23 | 206 | fits: 70 days to maturity, 206 available after Apr 16. | Aug 16 |
| Cucumber | Apr 16 | May 21–May 28 | 136 | two-plantings: Plant May 21 and again by Jul 22; both mature before Oct 4. | Jul 22 |
| Beans | — | May 14–May 28 | 150 | two-plantings: Plant May 14 and again by Jul 29; both mature before Oct 11. | Jul 29 |
| Peas | — | Mar 12–May 21 | 227 | fits: 65 days to maturity, 227 available after Mar 12. | Aug 7 |
| Zucchini | Apr 23 | May 21–May 28 | 136 | two-plantings: Plant May 21 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Onion | Feb 12 | Apr 9–Apr 23 | 199 | fits: 100 days to maturity, 199 available after Apr 9. | — |
| Spinach | — | Mar 12–Apr 30 | 241 | two-plantings: Plant Mar 12 and again by Sep 15; both mature before Nov 8. | Sep 15 |
| Kale | Feb 26 | Apr 9–Apr 23 | 213 | two-plantings: Plant Apr 9 and again by Aug 31; both mature before Nov 8. | Aug 31 |
| Broccoli | Mar 12 | Apr 9–Apr 23 | 199 | fits: 80 days to maturity, 199 available after Apr 9. | Jul 23 |
| Cabbage | Mar 12 | Apr 9–Apr 23 | 213 | fits: 70 days to maturity, 213 available after Apr 9. | Aug 16 |
| Radish | — | Mar 12–Jun 4 | 227 | two-plantings: Plant Mar 12 and again by Sep 16; both mature before Oct 25. | Sep 16 |
| Beets | — | Mar 12–Jun 4 | 227 | two-plantings: Plant Mar 12 and again by Aug 17; both mature before Oct 25. | Aug 17 |
| Potatoes | — | Apr 23–Apr 30 | 185 | fits: 90 days to maturity, 185 available after Apr 23. | — |
| Garlic | — | Oct 18 | 269 | overwinter: Plant Oct 18 to Nov 8; harvest the following summer. | Nov 8 |
| Strawberry | — | Apr 2–May 28 | 220 | perennial: A perennial: plant Apr 2; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 9 | May 14–May 21 | 136 | fits: 75 days to maturity, 136 available after May 14. | Jun 30 |
| Pumpkin | Apr 23 | May 21–May 21 | 129 | fits: 100 days to maturity, 129 available after May 21. | Jun 5 |
| Cauliflower | Mar 26 | Apr 30–May 14 | 178 | fits: 75 days to maturity, 178 available after Apr 30. | Jul 28 |
| Swiss Chard | Mar 12 | Apr 23–Apr 23 | 185 | two-plantings: Plant Apr 23 and again by Aug 17; both mature before Oct 25. | Aug 17 |
| Arugula | — | Mar 12–Jun 4 | 241 | two-plantings: Plant Mar 12 and again by Sep 15; both mature before Nov 8. | Sep 15 |
| Brussel Sprouts | Mar 12 | Apr 9–Apr 23 | 213 | fits: 100 days to maturity, 213 available after Apr 9. | Jul 17 |
| Butternut Squash | Apr 23 | May 21–May 28 | 129 | fits: 100 days to maturity, 129 available after May 21. | Jun 5 |
| Eggplant | Mar 19 | May 21–May 28 | 122 | fits: 70 days to maturity, 122 available after May 21. | Jun 28 |
| Okra | Apr 9 | May 14–May 21 | 143 | two-plantings: Plant May 14 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Basil | Apr 2 | May 28–May 28 | 129 | fits: 60 days to maturity, 129 available after May 28. | Jul 22 |
| Cilantro | — | Apr 9–Apr 30 | 199 | two-plantings: Plant Apr 9 and again by Aug 22; both mature before Oct 25. | Aug 22 |
| Parsley | Feb 26 | May 14–May 21 | 164 | fits: 70 days to maturity, 164 available after May 14. | Aug 2 |
| Celery | Feb 26 | May 14–May 28 | 164 | fits: 120 days to maturity, 164 available after May 14. | Jun 13 |
| Scallions | Feb 26 | Apr 9–Apr 23 | 213 | two-plantings: Plant Apr 9 and again by Aug 26; both mature before Nov 8. | Aug 26 |
| Turnip | — | Apr 9–Apr 23 | 213 | two-plantings: Plant Apr 9 and again by Sep 5; both mature before Nov 8. | Sep 5 |
| Kohlrabi | — | Mar 26–Apr 9 | 227 | two-plantings: Plant Mar 26 and again by Aug 31; both mature before Nov 8. | Aug 31 |
| Bok Choy | Apr 9 | Apr 30–May 7 | 178 | two-plantings: Plant Apr 30 and again by Aug 27; both mature before Oct 25. | Aug 27 |
| Collards | Feb 26 | Apr 9–Apr 23 | 213 | two-plantings: Plant Apr 9 and again by Aug 26; both mature before Nov 8. | Aug 26 |
| Cantaloupe | Apr 23 | May 21–May 28 | 122 | fits: 85 days to maturity, 122 available after May 21. | Jun 13 |
| Chives | Feb 12 | May 14–May 21 | 178 | fits: 90 days to maturity, 178 available after May 14. | — |
| Dill | — | Mar 12–Jun 4 | 227 | two-plantings: Plant Mar 12 and again by Aug 17; both mature before Oct 25. | Aug 17 |
| Oregano | Feb 26 | May 14–May 21 | 178 | fits: 80 days to maturity, 178 available after May 14. | — |
| Rosemary | Feb 12 | May 14–May 21 | 164 | fits: 80 days to maturity, 164 available after May 14. | — |
| Sage | Mar 12 | May 14–May 21 | 178 | fits: 75 days to maturity, 178 available after May 14. | — |
| Thyme | Feb 26 | May 14–May 21 | 178 | fits: 90 days to maturity, 178 available after May 14. | — |
| Calendula | Mar 26 | Apr 23–May 7 | 185 | two-plantings: Plant Apr 23 and again by Aug 22; both mature before Oct 25. | Aug 22 |
| Cosmos | Apr 9 | May 7–May 21 | 150 | two-plantings: Plant May 7 and again by Jul 22; both mature before Oct 4. | Jul 22 |
| Lavender | Feb 12 | May 7–May 21 | 185 | fits: 90 days to maturity, 185 available after May 7. | — |
| Marigolds | Mar 26 | May 7–May 14 | 150 | two-plantings: Plant May 7 and again by Aug 1; both mature before Oct 4. | Aug 1 |
| Melons | Apr 23 | May 21–May 28 | 122 | fits: 85 days to maturity, 122 available after May 21. | Jun 13 |
| Mint | — | May 7–May 21 | 185 | fits: 90 days to maturity, 185 available after May 7. | — |
| Nasturtiums | Apr 9 | May 7–May 14 | 150 | two-plantings: Plant May 7 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Pole Beans | — | May 14–May 28 | 143 | fits: 65 days to maturity, 143 available after May 14. | Jul 17 |
| Spaghetti Squash | Apr 23 | May 21–May 28 | 129 | fits: 90 days to maturity, 129 available after May 21. | Jun 15 |
| Sunflowers | — | May 7–May 21 | 150 | fits: 70 days to maturity, 150 available after May 7. | Jul 12 |
| Tomatillos | Mar 12 | May 14–May 21 | 129 | fits: 75 days to maturity, 129 available after May 14. | Jun 23 |
| Watermelon | Apr 23 | May 14–May 21 | 129 | fits: 80 days to maturity, 129 available after May 14. | Jun 18 |
| Yellow Squash | Apr 23 | May 21–May 28 | 136 | two-plantings: Plant May 21 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Zinnias | Apr 9 | May 7–May 21 | 150 | two-plantings: Plant May 7 and again by Jul 22; both mature before Oct 4. | Jul 22 |
Month by month in Prescott
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 12), Lavender (Feb 12), Onion (Feb 12), Rosemary (Feb 12), Celery (Feb 26), Collards (Feb 26), +5 more. |
| March | Start indoors: Broccoli (Mar 12), Brussel Sprouts (Mar 12), Cabbage (Mar 12), Lettuce (Mar 12), Sage (Mar 12), Swiss Chard (Mar 12), +6 more. Direct sow from: Arugula (Mar 12), Beets (Mar 12), Dill (Mar 12), Peas (Mar 12), Radish (Mar 12), Spinach (Mar 12), +1 more. |
| April | Start indoors: Basil (Apr 2), Tomato (Apr 2), Bok Choy (Apr 9), Corn (Apr 9), Cosmos (Apr 9), Nasturtiums (Apr 9), +11 more. Direct sow from: Cilantro (Apr 9), Turnip (Apr 9), Carrots (Apr 16), Potatoes (Apr 23). Transplant from: Broccoli (Apr 9), Brussel Sprouts (Apr 9), Cabbage (Apr 9), Collards (Apr 9), Kale (Apr 9), Lettuce (Apr 9), +6 more. Plant: Strawberry (Apr 2). |
| May | Direct sow from: Sunflowers (May 7), Beans (May 14), Pole Beans (May 14). Transplant from: Cosmos (May 7), Lavender (May 7), Marigolds (May 7), Mint (May 7), Nasturtiums (May 7), Zinnias (May 7), +23 more. Last frost around May 7. |
| June | Last sowing dates: Butternut Squash (Jun 5), Pumpkin (Jun 5), Cantaloupe (Jun 13), Celery (Jun 13), Melons (Jun 13), Spaghetti Squash (Jun 15), +6 more. |
| July | Last sowing dates: Sunflowers (Jul 12), Brussel Sprouts (Jul 17), Pole Beans (Jul 17), Basil (Jul 22), Cosmos (Jul 22), Cucumber (Jul 22), +8 more. |
| August | Last sowing dates: Marigolds (Aug 1), Parsley (Aug 2), Peas (Aug 7), Cabbage (Aug 16), Carrots (Aug 16), Beets (Aug 17), +10 more. |
| September | Last sowing dates: Turnip (Sep 5), Arugula (Sep 15), Spinach (Sep 15), Radish (Sep 16). |
| October | Direct sow from: Garlic (Oct 18). First frost around October 18. |
| November | Last sowing dates: Garlic (Nov 8). |
| 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 Prescott, AZ (ZIP 86305)?
The median last spring frost date for Prescott, AZ (ZIP code 86305) is around May 7. 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 April 22; one in ten it runs past May 25.
What is the first fall frost date in Prescott, AZ?
The median first fall frost date for Prescott, AZ is around October 18. 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 30 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Prescott, AZ?
The frost-free growing season in Prescott is about 164 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 Prescott (164 frost-free days, a moderate season), 31 of 56 planner crops fit outright, 24 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Prescott, AZ?
Prescott, AZ is in USDA hardiness zone 7b (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 Prescott, AZ?
Start tomatoes indoors Apr 2 and plant out May 21 in Prescott. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Prescott?
Two: plant Apr 9 and again by Aug 27; both mature before Oct 25.
When do I plant garlic in Prescott?
Oct 18 to Nov 8; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Dewey (ZIP 86327) has 215 frost-free days, 51 more than Prescott (ZIP 86305). See Dewey ZIP 86327 frost dates
Nearby and related
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