When to Plant Squash (Summer) in Sedgwick County, CO
Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.
Sedgwick County, Colorado is in USDA Zone 5a. The average last spring frost is May 4 and the first fall frost is October 8, giving you a growing season of approximately 157 days.
At an elevation of 7,669 feet, Sedgwick County receives approximately 20.5 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Squash (Summer) during the growing season.
Sedgwick County Soil Profile
Soil Type
Loam
Soil pH
6.2-8.3
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 10/10 — consider drought-tolerant varieties and mulching
Squash (Summer) Planting Timeline — Sedgwick County, CO
Squash (Summer) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 30 | Mar 30 – Apr 13 |
| Transplant Outdoors | May 18 | May 18 – Jun 1 |
| Direct Sow | May 11 | May 11 – Jun 1 |
| Harvest | July 6 | Jul 6 – Sep 7 |
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 5a
Growing Season
157 days
Growing Tips for Sedgwick 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 Sedgwick County, CO?
Sedgwick County is in Zone 5a with an average last frost of May 4. Plan your Squash (Summer) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Sedgwick County, CO?
Sedgwick County, Colorado is in USDA Hardiness Zone 5a. The average last spring frost is May 4 and first fall frost is October 8.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Sedgwick County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
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