Frost Dates for Park City, UT 84098
Last spring frost June 20 · First fall frost September 2 · 74 frost-free days · USDA Zone 5b
ZIP 84098 has about 20,400 people, the largest of 2 ZIP codes in Park City.
Short season: 74 frost-free days. Spring frost risk spans May 31–July 9 (39 days). Fall frost risk spans August 12–September 23 (42 days).
Frost probability for 84098
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | July 9 | June 20 | May 31 |
| Fall (first frost) | August 12 | September 2 | September 23 |
Dates come from NOAA 1971–2000 freeze probabilities at WANSHIP DAM (12.1 km away); the 50% date is the median year.
Frost dates by ZIP code in Park City, UT
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 84098 | June 20 | September 2 | 5b |
| 84060 | June 13 | September 11 | 6a |
Which crops fit a 74-day season in Park City
In Park City (74 frost-free days, a short season), 25 of 56 planner crops fit outright, 8 get two plantings, 8 need an indoor start, 2 need a faster variety, 12 don't reliably mature, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | May 16 | Jul 4–Jul 11 | 32 | no-fit: Needs 80 days; Park City has 32 after Jul 4. | — |
| Pepper | May 9 | Jul 4–Jul 11 | 32 | no-fit: Needs 75 days; Park City has 32 after Jul 4. | — |
| Lettuce | Apr 25 | May 23–May 30 | 109 | two-plantings: Plant May 23 and again by Jul 12; both mature before Sep 9. | Jul 12 |
| Carrots | — | May 30–Jun 6 | 116 | fits: 70 days to maturity, 116 available after May 30. | Jul 1 |
| Cucumber | May 30 | Jul 4–Jul 11 | 46 | head-start: Even planted out Jul 4, the outdoor season is about 14 days short; choose an early variety or grow under cover. | — |
| Beans | — | Jun 27–Jul 11 | 60 | fits: 60 days to maturity, 60 available after Jun 27. | — |
| Peas | — | Apr 25–Jul 4 | 137 | fits: 65 days to maturity, 137 available after Apr 25. | Jun 22 |
| Zucchini | Jun 6 | Jul 4–Jul 11 | 46 | head-start: Even planted out Jul 4, the outdoor season is about 9 days short; choose an early variety or grow under cover. | — |
| Onion | Mar 28 | May 23–Jun 6 | 109 | fits: 100 days to maturity, 109 available after May 23. | — |
| Spinach | — | Apr 25–Jun 13 | 151 | two-plantings: Plant Apr 25 and again by Jul 31; both mature before Sep 23. | Jul 31 |
| Kale | Apr 11 | May 23–Jun 6 | 123 | fits: 55 days to maturity, 123 available after May 23. | Jul 16 |
| Broccoli | Apr 25 | May 23–Jun 6 | 109 | fits: 80 days to maturity, 109 available after May 23. | Jun 7 |
| Cabbage | Apr 25 | May 23–Jun 6 | 123 | fits: 70 days to maturity, 123 available after May 23. | Jul 1 |
| Radish | — | Apr 25–Jul 18 | 137 | two-plantings: Plant Apr 25 and again by Aug 1; both mature before Sep 9. | Aug 1 |
| Beets | — | Apr 25–Jul 18 | 137 | two-plantings: Plant Apr 25 and again by Jul 2; both mature before Sep 9. | Jul 2 |
| Potatoes | — | Jun 6–Jun 13 | 95 | fits: 90 days to maturity, 95 available after Jun 6. | — |
| Garlic | — | Sep 2 | 179 | overwinter: Plant Sep 2 to Sep 23; harvest the following summer. | Sep 23 |
| Strawberry | — | May 16–Jul 11 | 130 | perennial: A perennial: plant May 16; it fruits from the following year and keeps producing for several years. | — |
| Corn | May 23 | Jun 27–Jul 4 | 46 | no-fit: Needs 75 days; Park City has 46 after Jun 27. | — |
| Pumpkin | Jun 6 | Jul 4–Jul 4 | 39 | no-fit: Needs 100 days; Park City has 39 after Jul 4. | — |
| Cauliflower | May 9 | Jun 13–Jun 27 | 88 | fits: 75 days to maturity, 88 available after Jun 13. | — |
| Swiss Chard | Apr 25 | Jun 6–Jun 6 | 95 | fits: 55 days to maturity, 95 available after Jun 6. | Jul 2 |
| Arugula | — | Apr 25–Jul 18 | 151 | two-plantings: Plant Apr 25 and again by Jul 31; both mature before Sep 23. | Jul 31 |
| Brussel Sprouts | Apr 25 | May 23–Jun 6 | 123 | fits: 100 days to maturity, 123 available after May 23. | Jun 1 |
| Butternut Squash | Jun 6 | Jul 4–Jul 11 | 39 | no-fit: Needs 100 days; Park City has 39 after Jul 4. | — |
| Eggplant | May 2 | Jul 4–Jul 11 | 32 | no-fit: Needs 70 days; Park City has 32 after Jul 4. | — |
| Okra | May 23 | Jun 27–Jul 4 | 53 | head-start: Even planted out Jun 27, the outdoor season is about 2 days short; choose an early variety or grow under cover. | — |
| Basil | May 16 | Jul 11–Jul 11 | 39 | head-start: Even planted out Jul 11, the outdoor season is about 21 days short; choose an early variety or grow under cover. | — |
| Cilantro | — | May 23–Jun 13 | 109 | fits: 50 days to maturity, 109 available after May 23. | Jul 7 |
| Parsley | Apr 11 | Jun 27–Jul 4 | 74 | fits: 70 days to maturity, 74 available after Jun 27. | — |
| Celery | Apr 11 | Jun 27–Jul 11 | 74 | no-fit: Needs 120 days; Park City has 74 after Jun 27. | — |
| Scallions | Apr 11 | May 23–Jun 6 | 123 | fits: 60 days to maturity, 123 available after May 23. | Jul 11 |
| Turnip | — | May 23–Jun 6 | 123 | two-plantings: Plant May 23 and again by Jul 21; both mature before Sep 23. | Jul 21 |
| Kohlrabi | — | May 9–May 23 | 137 | two-plantings: Plant May 9 and again by Jul 16; both mature before Sep 23. | Jul 16 |
| Bok Choy | May 23 | Jun 13–Jun 20 | 88 | fits: 45 days to maturity, 88 available after Jun 13. | Jul 12 |
| Collards | Apr 11 | May 23–Jun 6 | 123 | fits: 60 days to maturity, 123 available after May 23. | Jul 11 |
| Cantaloupe | Jun 6 | Jul 4–Jul 11 | 32 | no-fit: Needs 85 days; Park City has 32 after Jul 4. | — |
| Chives | Mar 28 | Jun 27–Jul 4 | 88 | head-start: Even planted out Jun 27, the outdoor season is about 2 days short; choose an early variety or grow under cover. | — |
| Dill | — | Apr 25–Jul 18 | 137 | two-plantings: Plant Apr 25 and again by Jul 2; both mature before Sep 9. | Jul 2 |
| Oregano | Apr 11 | Jun 27–Jul 4 | 88 | fits: 80 days to maturity, 88 available after Jun 27. | — |
| Rosemary | Mar 28 | Jun 27–Jul 4 | 74 | head-start: Even planted out Jun 27, the outdoor season is about 6 days short; choose an early variety or grow under cover. | — |
| Sage | Apr 25 | Jun 27–Jul 4 | 88 | fits: 75 days to maturity, 88 available after Jun 27. | — |
| Thyme | Apr 11 | Jun 27–Jul 4 | 88 | head-start: Even planted out Jun 27, the outdoor season is about 2 days short; choose an early variety or grow under cover. | — |
| Calendula | May 9 | Jun 6–Jun 20 | 95 | fits: 50 days to maturity, 95 available after Jun 6. | Jul 7 |
| Cosmos | May 23 | Jun 20–Jul 4 | 60 | fits: 60 days to maturity, 60 available after Jun 20. | — |
| Lavender | Mar 28 | Jun 20–Jul 4 | 95 | fits: 90 days to maturity, 95 available after Jun 20. | — |
| Marigolds | May 9 | Jun 20–Jun 27 | 60 | fits: 50 days to maturity, 60 available after Jun 20. | — |
| Melons | Jun 6 | Jul 4–Jul 11 | 32 | no-fit: Needs 85 days; Park City has 32 after Jul 4. | — |
| Mint | — | Jun 20–Jul 4 | 95 | fits: 90 days to maturity, 95 available after Jun 20. | — |
| Nasturtiums | May 23 | Jun 20–Jun 27 | 60 | fits: 55 days to maturity, 60 available after Jun 20. | — |
| Pole Beans | — | Jun 27–Jul 11 | 53 | tight: Direct-sow only; pick a variety under 53 days. | — |
| Spaghetti Squash | Jun 6 | Jul 4–Jul 11 | 39 | no-fit: Needs 90 days; Park City has 39 after Jul 4. | — |
| Sunflowers | — | Jun 20–Jul 4 | 60 | tight: Direct-sow only; pick a variety under 60 days. | — |
| Tomatillos | Apr 25 | Jun 27–Jul 4 | 39 | no-fit: Needs 75 days; Park City has 39 after Jun 27. | — |
| Watermelon | Jun 6 | Jun 27–Jul 4 | 39 | no-fit: Needs 80 days; Park City has 39 after Jun 27. | — |
| Yellow Squash | Jun 6 | Jul 4–Jul 11 | 46 | head-start: Even planted out Jul 4, the outdoor season is about 9 days short; choose an early variety or grow under cover. | — |
| Zinnias | May 23 | Jun 20–Jul 4 | 60 | fits: 60 days to maturity, 60 available after Jun 20. | — |
Month by month in Park City
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start the slowest-growing crops indoors: onions, leeks, and celery (10–12 weeks before last frost). |
| March | Start indoors: Chives (Mar 28), Lavender (Mar 28), Onion (Mar 28), Rosemary (Mar 28). |
| April | Start indoors: Celery (Apr 11), Collards (Apr 11), Kale (Apr 11), Oregano (Apr 11), Parsley (Apr 11), Scallions (Apr 11), +8 more. Direct sow from: Arugula (Apr 25), Beets (Apr 25), Dill (Apr 25), Peas (Apr 25), Radish (Apr 25), Spinach (Apr 25). |
| May | Start indoors: Eggplant (May 2), Calendula (May 9), Cauliflower (May 9), Marigolds (May 9), Pepper (May 9), Basil (May 16), +8 more. Direct sow from: Kohlrabi (May 9), Cilantro (May 23), Turnip (May 23), Carrots (May 30). Transplant from: Broccoli (May 23), Brussel Sprouts (May 23), Cabbage (May 23), Collards (May 23), Kale (May 23), Lettuce (May 23), +2 more. Plant: Strawberry (May 16). |
| June | Start indoors: Butternut Squash (Jun 6), Cantaloupe (Jun 6), Melons (Jun 6), Pumpkin (Jun 6), Spaghetti Squash (Jun 6), Watermelon (Jun 6), +2 more. Direct sow from: Potatoes (Jun 6), Sunflowers (Jun 20), Beans (Jun 27), Pole Beans (Jun 27). Transplant from: Calendula (Jun 6), Swiss Chard (Jun 6), Bok Choy (Jun 13), Cauliflower (Jun 13), Cosmos (Jun 20), Lavender (Jun 20), +15 more. Last frost around June 20. Last sowing dates: Brussel Sprouts (Jun 1), Broccoli (Jun 7), Peas (Jun 22). |
| July | Transplant from: Butternut Squash (Jul 4), Cantaloupe (Jul 4), Cucumber (Jul 4), Eggplant (Jul 4), Melons (Jul 4), Pepper (Jul 4), +6 more. Last sowing dates: Cabbage (Jul 1), Carrots (Jul 1), Beets (Jul 2), Dill (Jul 2), Swiss Chard (Jul 2), Calendula (Jul 7), +10 more. |
| August | Last sowing dates: Radish (Aug 1). |
| September | Direct sow from: Garlic (Sep 2). First frost around September 2. Last sowing dates: Garlic (Sep 23). |
| October | Harvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year. |
| November | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
| 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 Park City, UT (ZIP 84098)?
The median last spring frost date for Park City, UT (ZIP code 84098) is around June 20. 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 May 31; one in ten it runs past July 9.
What is the first fall frost date in Park City, UT?
The median first fall frost date for Park City, UT is around September 2. 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 August 12 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Park City, UT?
The frost-free growing season in Park City is about 74 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 Park City (74 frost-free days, a short season), 25 of 56 planner crops fit outright, 8 get two plantings, 8 need an indoor start, 2 need a faster variety, 12 don't reliably mature, 1 crop is perennial.
What USDA hardiness zone is Park City, UT?
Park City, UT is in USDA hardiness zone 5b (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 Park City, UT?
Start tomatoes indoors May 16 and plant out Jul 4 in Park City. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Park City?
Two: plant May 23 and again by Jul 12; both mature before Sep 9.
When do I plant garlic in Park City?
Sep 2 to Sep 23; it overwinters and is ready the following summer.
Can I grow Celery in Park City?
Not reliably outdoors. Needs 120 days; Park City has 74 after Jun 27.
Which nearby ZIP has a longer season?
Salt Lake City (ZIP 84109) has 131 frost-free days, 57 more than Park City (ZIP 84098). See Salt Lake City ZIP 84109 frost dates
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