When to plant in Millcreek, UT
USDA Zone 7bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Millcreek, Utah — all computed from Millcreek's nearest NOAA weather station.
In zone 7b, Millcreek supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
SALT LAKE CITY E BENCH · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Millcreek’s own odds, recorded at SALT LAKE CITY E BENCH.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 29 | May 8 | Apr 24 | Sep 28 | Oct 8 | Oct 21 |
| 32°F | May 10 | Apr 25 | Apr 7 | Oct 5 | Oct 18 | Nov 1 |
| 28°F | Apr 26 | Apr 7 | Mar 19 | Oct 15 | Oct 29 | Nov 15 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Millcreek, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Millcreek planting FAQ
When is the last spring frost in Millcreek, UT?
On average, the last spring frost in Millcreek is around April 25 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Millcreek, UT?
The first fall frost in Millcreek typically arrives around October 18 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Millcreek in?
Millcreek is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Millcreek?
Millcreek has about 176 frost-free days — a moderate growing season — between the average last spring frost (April 25) and first fall frost (October 18).
When should I plant tomatoes in Millcreek?
For Millcreek, sow tomatoes indoors about February 28–March 14 and move the seedlings out around May 2, after the last spring frost.
Never miss a window in Millcreek
An email when it’s time to start seeds, transplant, and sow — timed to Millcreek’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Holladay · 3 km
- South Salt Lake · 6 km
- Murray · 6 km
- Cottonwood Heights · 8 km
- Midvale · 10 km
- Taylorsville · 11 km
- Salt Lake City · 13 km
- Sandy · 13 km
Frost dates recorded at SALT LAKE CITY E BENCH, 5 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Millcreek, UT — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00427655. Retrieved from https://blissgarden.com/utah/millcreek.