When to Plant Broccoli in Utah
A nutrition powerhouse that thrives in cool weather. Harvest the main head, then enjoy weeks of side shoots.
The Short Answer
Utah Frost Dates
Your planting dates depend on which part of Utah you're in. Here are the frost date ranges by region:
| Region | Zones | Last Frost (Spring) | First Frost (Fall) |
|---|---|---|---|
| Wasatch Front (SLC) | 6a, 6b, 7a | Apr 20 - May 10 | Oct 1 - Oct 20 |
| Mountain Regions | 4a, 4b, 5a | May 25 - Jun 15 | Aug 25 - Sep 15 |
| Southern Utah | 6b, 7a, 7b | Apr 10 - May 1 | Oct 10 - Nov 1 |
Broccoli Planting Schedule for Utah
Wasatch Front (SLC) (Zones 6a, 6b, 7a)
Average last frost: Apr 20 - May 10 · Average first frost: Oct 1 - Oct 20
Mountain Regions (Zones 4a, 4b, 5a)
Average last frost: May 25 - Jun 15 · Average first frost: Aug 25 - Sep 15
Southern Utah (Zones 6b, 7a, 7b)
Average last frost: Apr 10 - May 1 · Average first frost: Oct 10 - Nov 1
Growing Broccoli in Utah
Broccoli in Utah's Climate
Broccoli is a cool-season crop in your warm climate. Plant from September through November for fall-winter harvest. The gradually cooling autumn produces sweet, dense heads. Frost-kissed broccoli tastes noticeably better. Choose heat-tolerant varieties like Green Magic that head reliably even when your 'cool season' is warmer than northern states' summers.
Soil Considerations for Utah
Alkaline desert soils. Low organic matter. Saline soils in some areas. Heavy amendment with compost and sulfur needed.
Utah Climate & Growing Season
Arid climate. Intense sun. Low humidity. Wide temperature swings. Irrigation essential everywhere. Broccoli can handle frost well, which is an advantage in Utah's climate. You can push planting dates earlier in spring and extend into fall.
Growing season length varies across Utah: Wasatch Front (SLC) (6a, 6b, 7a) has a last frost around Apr 20 - May 10, while Southern Utah (6b, 7a, 7b) sees frost end around Apr 10 - May 1. This difference matters for broccoli — but broccoli handle frost well, so the timing difference is less critical.
Growing Tips
Harvest main head while buds are tight. Side shoots will continue producing for weeks after the main harvest.
Companion Planting
Plant broccoli alongside these companions for better growth:
Keep broccoli away from:
The Bottom Line
Last reviewed: March 29, 2026