When to Plant Squash (Summer) in Utah County, UT
Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.
Utah County, Utah is in USDA Zone 6a. The average last spring frost is May 5 and the first fall frost is October 11, giving you a growing season of approximately 159 days.
At an elevation of 5,535 feet, Utah County receives approximately 22.1 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Squash (Summer) during the growing season.
Utah County Soil Profile
Soil Type
Loam
Soil pH
6.5-8.3
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Squash (Summer) Planting Timeline — Utah County, UT
Squash (Summer) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 31 | Mar 31 – Apr 14 |
| Transplant Outdoors | May 19 | May 19 – Jun 2 |
| Direct Sow | May 12 | May 12 – Jun 2 |
| Harvest | July 7 | Jul 7 – Sep 8 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
45–65 days
Soil pH
6 – 7.5
USDA Zone
Zone 6a
Growing Season
159 days
Growing Tips for Utah County
Direct sow after last frost on mounds. Harvest frequently when fruits are 6-8 inches for best texture. Check plants daily as they grow rapidly in summer heat.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Squash (Summer) in Other Locations
Frequently Asked Questions
When should I plant Squash (Summer) in Utah County, UT?
Utah County is in Zone 6a with an average last frost of May 5. Plan your Squash (Summer) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Utah County, UT?
Utah County, Utah is in USDA Hardiness Zone 6a. The average last spring frost is May 5 and first fall frost is October 11.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Utah County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
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