Garrison, UT frost dates
Last spring frostMay 12median date
First fall frostOct 14median date
Growing season155 daysfrost-free
Hardiness zone6aZone 6a
How Garrison compares
- In 8 years out of 10, the last spring frost in Garrison falls between April 26 and June 4, a 39-day window. The first fall frost falls between October 1 and October 29.
- The median last frost is 2 days later than the Utah median of May 10.
- Its 155-day growing season is longer than 56% of the 250 Utah places with a regular frost season (state median 148 days).
- The last frost is 13 days later than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 152 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 26 |
| 50% (median) | May 12 |
| 10% (safe for tender plants) | June 4 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 1 |
| 50% (median) | October 14 |
| 90% (late) | October 29 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Garrison, UT
Garrison, UT frost dates — last frost May 12, first frost Oct 14, zone 6a. whenisthelastfrost.com
Crop
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Start indoors: Feb 17 to Mar 3Transplant outside: Apr 14 to Apr 28
Start indoors: Mar 3 to Mar 17Transplant outside: May 26 to Jun 9
Start indoors: Mar 3 to Mar 17Transplant outside: May 26 to Jun 9
Start indoors: Mar 17 to Mar 31Transplant outside: May 19 to Jun 2
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 21 to May 5Sow outdoors: Apr 14 to May 19Plant for fall: Aug 19 to Sep 16
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 14 to Apr 28Sow outdoors: Apr 14 to Apr 28Plant for fall: Aug 5 to Aug 26
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 28 to May 12Plant for fall: Jul 8 to Jul 29
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 21 to May 5Plant for fall: Jul 8 to Jul 29
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 28 to May 12Plant for fall: Jul 8 to Jul 29
Start indoors: Mar 31 to Apr 14Transplant outside: Jun 2 to Jun 16Sow outdoors: Jun 2 to Jun 16
Start indoors: Mar 31 to Apr 14Transplant outside: May 19 to Jun 2
Sow outdoors: Mar 31 to Apr 21Plant for fall: Jul 22 to Aug 12
Sow outdoors: Mar 31 to Apr 21Plant for fall: Aug 19 to Sep 9
Sow outdoors: Apr 7 to May 19Plant for fall: Sep 2 to Sep 23
Start indoors: Apr 14 to Apr 21Transplant outside: May 26 to Jun 2Sow outdoors: May 19 to Jun 2Plant for fall: Jul 29 to Aug 12
Start indoors: Apr 14 to Apr 21Sow outdoors: May 19 to Jun 2Plant for fall: Aug 5 to Aug 19
Start indoors: Apr 14 to Apr 21Sow outdoors: May 19 to Jun 2
Start indoors: Apr 14 to Apr 21Transplant outside: May 26 to Jun 9
Sow outdoors: Apr 21 to May 19Plant for fall: Jul 22 to Aug 5
Sow outdoors: Apr 21 to May 19Plant for fall: Aug 5 to Aug 19
Sow outdoors: Apr 21 to May 12
Sow outdoors: Apr 28 to May 26Plant for fall: Aug 5 to Aug 19
Sow outdoors: Apr 28 to May 19Plant for fall: Aug 19 to Sep 9
Sow outdoors: May 19 to Jun 9Plant for fall: Jul 29 to Aug 12
Sow outdoors: May 19 to Jun 2
Transplant outside: May 26 to Jun 16
Plant for fall: Sep 30 to Nov 4
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Garrison, UT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 17 – Mar 3 | Apr 14 – Apr 28 | — | — |
| Peppers | Mar 3 – Mar 17 | May 26 – Jun 9 | — | — |
| Eggplant | Mar 3 – Mar 17 | May 26 – Jun 9 | — | — |
| Tomatoes | Mar 17 – Mar 31 | May 19 – Jun 2 | — | — |
| Lettuce | Mar 17 – Mar 31 | Apr 21 – May 5 | Apr 14 – May 19 | Aug 19 – Sep 16 |
| Kale | Mar 17 – Mar 31 | Apr 14 – Apr 28 | Apr 14 – Apr 28 | Aug 5 – Aug 26 |
| Broccoli | Mar 17 – Mar 31 | Apr 28 – May 12 | — | Jul 8 – Jul 29 |
| Cabbage | Mar 17 – Mar 31 | Apr 21 – May 5 | — | Jul 8 – Jul 29 |
| Cauliflower | Mar 17 – Mar 31 | Apr 28 – May 12 | — | Jul 8 – Jul 29 |
| Okra | Mar 31 – Apr 14 | Jun 2 – Jun 16 | Jun 2 – Jun 16 | — |
| Basil | Mar 31 – Apr 14 | May 19 – Jun 2 | — | — |
| Peas | — | — | Mar 31 – Apr 21 | Jul 22 – Aug 12 |
| Spinach | — | — | Mar 31 – Apr 21 | Aug 19 – Sep 9 |
| Radishes | — | — | Apr 7 – May 19 | Sep 2 – Sep 23 |
| Cucumbers | Apr 14 – Apr 21 | May 26 – Jun 2 | May 19 – Jun 2 | Jul 29 – Aug 12 |
| Zucchini & Summer Squash | Apr 14 – Apr 21 | — | May 19 – Jun 2 | Aug 5 – Aug 19 |
| Winter Squash & Pumpkins | Apr 14 – Apr 21 | — | May 19 – Jun 2 | — |
| Melons & Watermelon | Apr 14 – Apr 21 | May 26 – Jun 9 | — | — |
| Carrots | — | — | Apr 21 – May 19 | Jul 22 – Aug 5 |
| Beets | — | — | Apr 21 – May 19 | Aug 5 – Aug 19 |
| Potatoes | — | — | Apr 21 – May 12 | — |
| Swiss Chard | — | — | Apr 28 – May 26 | Aug 5 – Aug 19 |
| Cilantro | — | — | Apr 28 – May 19 | Aug 19 – Sep 9 |
| Green Beans | — | — | May 19 – Jun 9 | Jul 29 – Aug 12 |
| Sweet Corn | — | — | May 19 – Jun 2 | — |
| Sweet Potatoes | — | May 26 – Jun 16 | — | — |
| Garlic | — | — | — | Sep 30 – Nov 4 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Baker 5 W, NV weather station, 17 km away (elevation 6,617 ft (2,017 m)).
Frost dates near Garrison
- Milford May 10 · Oct 2
- Beryl May 31 · Sep 20
- Ibapah Jun 14 · Sep 8
- Minersville May 10 · Oct 2
- Hinckley May 14 · Sep 30
- Modena May 20 · Oct 3
- Kanosh Apr 30 · Oct 19
- Greenville Jun 1 · Sep 28
- Delta May 16 · Sep 29
- Meadow Apr 30 · Oct 19
Frequently asked questions
When is the last frost in Garrison, UT?
The median last spring frost in Garrison, UT is May 12. There is still about a 10% chance of frost after June 4, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Garrison, UT?
The median first fall frost is October 14, with about a 10% chance of frost before October 1.
How long is the growing season in Garrison, UT?
About 155 days between the median last spring frost and first fall frost.
What planting zone is Garrison, UT?
Garrison, UT is in USDA hardiness zone 6a.