Frost Dates for Magna, UT 84044
Last spring frost April 22 · First fall frost October 25 · 186 frost-free days · USDA Zone 7b
ZIP 84044 has about 30,000 people.
Long season: 186 frost-free days. Spring frost risk spans March 31–May 20 (50 days). Fall frost risk spans October 7–November 8 (32 days).
Frost probability for 84044
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 20 | April 22 | March 31 |
| Fall (first frost) | October 7 | October 25 | November 8 |
Dates come from NOAA 1971–2000 freeze probabilities at GARFIELD (4.3 km away); the 50% date is the median year.
Which crops fit a 186-day season in Magna
In Magna (186 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 | Mar 18 | May 6–May 13 | 144 | fits: 80 days to maturity, 144 available after May 6. | Jun 25 |
| Pepper | Mar 11 | May 6–May 13 | 144 | fits: 75 days to maturity, 144 available after May 6. | Jun 30 |
| Lettuce | Feb 25 | Mar 25–Apr 1 | 221 | two-plantings: Plant Mar 25 and again by Sep 3; both mature before Nov 1. | Sep 3 |
| Carrots | — | Apr 1–Apr 8 | 228 | fits: 70 days to maturity, 228 available after Apr 1. | Aug 23 |
| Cucumber | Apr 1 | May 6–May 13 | 158 | two-plantings: Plant May 6 and again by Jul 29; both mature before Oct 11. | Jul 29 |
| Beans | — | Apr 29–May 13 | 172 | two-plantings: Plant Apr 29 and again by Aug 5; both mature before Oct 18. | Aug 5 |
| Peas | — | Feb 25–May 6 | 249 | fits: 65 days to maturity, 249 available after Feb 25. | Aug 14 |
| Zucchini | Apr 8 | May 6–May 13 | 158 | two-plantings: Plant May 6 and again by Aug 3; both mature before Oct 11. | Aug 3 |
| Onion | Jan 28 | Mar 25–Apr 8 | 221 | fits: 100 days to maturity, 221 available after Mar 25. | — |
| Spinach | — | Feb 25–Apr 15 | 263 | two-plantings: Plant Feb 25 and again by Sep 22; both mature before Nov 15. | Sep 22 |
| Kale | Feb 11 | Mar 25–Apr 8 | 235 | two-plantings: Plant Mar 25 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Broccoli | Feb 25 | Mar 25–Apr 8 | 221 | fits: 80 days to maturity, 221 available after Mar 25. | Jul 30 |
| Cabbage | Feb 25 | Mar 25–Apr 8 | 235 | fits: 70 days to maturity, 235 available after Mar 25. | Aug 23 |
| Radish | — | Feb 25–May 20 | 249 | two-plantings: Plant Feb 25 and again by Sep 23; both mature before Nov 1. | Sep 23 |
| Beets | — | Feb 25–May 20 | 249 | two-plantings: Plant Feb 25 and again by Aug 24; both mature before Nov 1. | Aug 24 |
| Potatoes | — | Apr 8–Apr 15 | 207 | fits: 90 days to maturity, 207 available after Apr 8. | — |
| Garlic | — | Oct 25 | 291 | overwinter: Plant Oct 25 to Nov 15; harvest the following summer. | Nov 15 |
| Strawberry | — | Mar 18–May 13 | 242 | perennial: A perennial: plant Mar 18; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 25 | Apr 29–May 6 | 158 | fits: 75 days to maturity, 158 available after Apr 29. | Jul 7 |
| Pumpkin | Apr 8 | May 6–May 6 | 151 | fits: 100 days to maturity, 151 available after May 6. | Jun 12 |
| Cauliflower | Mar 11 | Apr 15–Apr 29 | 200 | fits: 75 days to maturity, 200 available after Apr 15. | Aug 4 |
| Swiss Chard | Feb 25 | Apr 8–Apr 8 | 207 | two-plantings: Plant Apr 8 and again by Aug 24; both mature before Nov 1. | Aug 24 |
| Arugula | — | Feb 25–May 20 | 263 | two-plantings: Plant Feb 25 and again by Sep 22; both mature before Nov 15. | Sep 22 |
| Brussel Sprouts | Feb 25 | Mar 25–Apr 8 | 235 | fits: 100 days to maturity, 235 available after Mar 25. | Jul 24 |
| Butternut Squash | Apr 8 | May 6–May 13 | 151 | fits: 100 days to maturity, 151 available after May 6. | Jun 12 |
| Eggplant | Mar 4 | May 6–May 13 | 144 | fits: 70 days to maturity, 144 available after May 6. | Jul 5 |
| Okra | Mar 25 | Apr 29–May 6 | 165 | two-plantings: Plant Apr 29 and again by Aug 3; both mature before Oct 11. | Aug 3 |
| Basil | Mar 18 | May 13–May 13 | 151 | two-plantings: Plant May 13 and again by Jul 29; both mature before Oct 11. | Jul 29 |
| Cilantro | — | Mar 25–Apr 15 | 221 | two-plantings: Plant Mar 25 and again by Aug 29; both mature before Nov 1. | Aug 29 |
| Parsley | Feb 11 | Apr 29–May 6 | 186 | fits: 70 days to maturity, 186 available after Apr 29. | Aug 9 |
| Celery | Feb 11 | Apr 29–May 13 | 186 | fits: 120 days to maturity, 186 available after Apr 29. | Jun 20 |
| Scallions | Feb 11 | Mar 25–Apr 8 | 235 | two-plantings: Plant Mar 25 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Turnip | — | Mar 25–Apr 8 | 235 | two-plantings: Plant Mar 25 and again by Sep 12; both mature before Nov 15. | Sep 12 |
| Kohlrabi | — | Mar 11–Mar 25 | 249 | two-plantings: Plant Mar 11 and again by Sep 7; both mature before Nov 15. | Sep 7 |
| Bok Choy | Mar 25 | Apr 15–Apr 22 | 200 | two-plantings: Plant Apr 15 and again by Sep 3; both mature before Nov 1. | Sep 3 |
| Collards | Feb 11 | Mar 25–Apr 8 | 235 | two-plantings: Plant Mar 25 and again by Sep 2; both mature before Nov 15. | Sep 2 |
| Cantaloupe | Apr 8 | May 6–May 13 | 144 | fits: 85 days to maturity, 144 available after May 6. | Jun 20 |
| Chives | Jan 28 | Apr 29–May 6 | 200 | fits: 90 days to maturity, 200 available after Apr 29. | — |
| Dill | — | Feb 25–May 20 | 249 | two-plantings: Plant Feb 25 and again by Aug 24; both mature before Nov 1. | Aug 24 |
| Oregano | Feb 11 | Apr 29–May 6 | 200 | fits: 80 days to maturity, 200 available after Apr 29. | — |
| Rosemary | Jan 28 | Apr 29–May 6 | 186 | fits: 80 days to maturity, 186 available after Apr 29. | — |
| Sage | Feb 25 | Apr 29–May 6 | 200 | fits: 75 days to maturity, 200 available after Apr 29. | — |
| Thyme | Feb 11 | Apr 29–May 6 | 200 | fits: 90 days to maturity, 200 available after Apr 29. | — |
| Calendula | Mar 11 | Apr 8–Apr 22 | 207 | two-plantings: Plant Apr 8 and again by Aug 29; both mature before Nov 1. | Aug 29 |
| Cosmos | Mar 25 | Apr 22–May 6 | 172 | two-plantings: Plant Apr 22 and again by Jul 29; both mature before Oct 11. | Jul 29 |
| Lavender | Jan 28 | Apr 22–May 6 | 207 | fits: 90 days to maturity, 207 available after Apr 22. | — |
| Marigolds | Mar 11 | Apr 22–Apr 29 | 172 | two-plantings: Plant Apr 22 and again by Aug 8; both mature before Oct 11. | Aug 8 |
| Melons | Apr 8 | May 6–May 13 | 144 | fits: 85 days to maturity, 144 available after May 6. | Jun 20 |
| Mint | — | Apr 22–May 6 | 207 | fits: 90 days to maturity, 207 available after Apr 22. | — |
| Nasturtiums | Mar 25 | Apr 22–Apr 29 | 172 | two-plantings: Plant Apr 22 and again by Aug 3; both mature before Oct 11. | Aug 3 |
| Pole Beans | — | Apr 29–May 13 | 165 | fits: 65 days to maturity, 165 available after Apr 29. | Jul 24 |
| Spaghetti Squash | Apr 8 | May 6–May 13 | 151 | fits: 90 days to maturity, 151 available after May 6. | Jun 22 |
| Sunflowers | — | Apr 22–May 6 | 172 | fits: 70 days to maturity, 172 available after Apr 22. | Jul 19 |
| Tomatillos | Feb 25 | Apr 29–May 6 | 151 | fits: 75 days to maturity, 151 available after Apr 29. | Jun 30 |
| Watermelon | Apr 8 | Apr 29–May 6 | 151 | fits: 80 days to maturity, 151 available after Apr 29. | Jun 25 |
| Yellow Squash | Apr 8 | May 6–May 13 | 158 | two-plantings: Plant May 6 and again by Aug 3; both mature before Oct 11. | Aug 3 |
| Zinnias | Mar 25 | Apr 22–May 6 | 172 | two-plantings: Plant Apr 22 and again by Jul 29; both mature before Oct 11. | Jul 29 |
Month by month in Magna
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 28), Lavender (Jan 28), Onion (Jan 28), Rosemary (Jan 28). |
| February | Start indoors: Celery (Feb 11), Collards (Feb 11), Kale (Feb 11), Oregano (Feb 11), Parsley (Feb 11), Scallions (Feb 11), +8 more. Direct sow from: Arugula (Feb 25), Beets (Feb 25), Dill (Feb 25), Peas (Feb 25), Radish (Feb 25), Spinach (Feb 25). |
| March | Start indoors: Eggplant (Mar 4), Calendula (Mar 11), Cauliflower (Mar 11), Marigolds (Mar 11), Pepper (Mar 11), Basil (Mar 18), +7 more. Direct sow from: Kohlrabi (Mar 11), Cilantro (Mar 25), Turnip (Mar 25). Transplant from: Broccoli (Mar 25), Brussel Sprouts (Mar 25), Cabbage (Mar 25), Collards (Mar 25), Kale (Mar 25), Lettuce (Mar 25), +2 more. Plant: Strawberry (Mar 18). |
| April | Start indoors: Cucumber (Apr 1), Butternut Squash (Apr 8), Cantaloupe (Apr 8), Melons (Apr 8), Pumpkin (Apr 8), Spaghetti Squash (Apr 8), +3 more. Direct sow from: Carrots (Apr 1), Potatoes (Apr 8), Sunflowers (Apr 22), Beans (Apr 29), Pole Beans (Apr 29). Transplant from: Calendula (Apr 8), Swiss Chard (Apr 8), Bok Choy (Apr 15), Cauliflower (Apr 15), Cosmos (Apr 22), Lavender (Apr 22), +15 more. Last frost around April 22. |
| May | Transplant from: Butternut Squash (May 6), Cantaloupe (May 6), Cucumber (May 6), Eggplant (May 6), Melons (May 6), Pepper (May 6), +6 more. |
| June | Last sowing dates: Butternut Squash (Jun 12), Pumpkin (Jun 12), Cantaloupe (Jun 20), Celery (Jun 20), Melons (Jun 20), Spaghetti Squash (Jun 22), +4 more. |
| July | Last sowing dates: Eggplant (Jul 5), Corn (Jul 7), Sunflowers (Jul 19), Brussel Sprouts (Jul 24), Pole Beans (Jul 24), Basil (Jul 29), +4 more. |
| August | Last sowing dates: Nasturtiums (Aug 3), Okra (Aug 3), Yellow Squash (Aug 3), Zucchini (Aug 3), Cauliflower (Aug 4), Beans (Aug 5), +10 more. |
| September | Last sowing dates: Collards (Sep 2), Scallions (Sep 2), Bok Choy (Sep 3), Lettuce (Sep 3), Kale (Sep 7), Kohlrabi (Sep 7), +4 more. |
| October | Direct sow from: Garlic (Oct 25). First frost around October 25. |
| November | Last sowing dates: Garlic (Nov 15). |
| 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 Magna, UT (ZIP 84044)?
The median last spring frost date for Magna, UT (ZIP code 84044) is around April 22. 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 31; one in ten it runs past May 20.
What is the first fall frost date in Magna, UT?
The median first fall frost date for Magna, UT is around October 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 October 7 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Magna, UT?
The frost-free growing season in Magna is about 186 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 Magna (186 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 Magna, UT?
Magna, UT 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 Magna, UT?
Start tomatoes indoors Mar 18 and plant out May 6 in Magna. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Magna?
Two: plant Mar 25 and again by Sep 3; both mature before Nov 1.
When do I plant garlic in Magna?
Oct 25 to Nov 15; it overwinters and is ready the following summer.
Can I get two tomato crops in Magna?
Yes: plant out May 6 for a summer crop, and set out a second round of transplants by Jun 25 for a fall crop.
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