When to plant Squash (Summer) in Audubon County, IA
Audubon County sits in USDA Zone 5a. Plant Squash (Summer) between May 5 (after last frost on April 28) and May 26.
When to Plant Squash (Summer) in Audubon County, IA
Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.
Audubon County, Iowa is in USDA Zone 5a. The average last spring frost is April 28 and the first fall frost is October 3, giving you a growing season of approximately 158 days.
At an elevation of 1,056 feet, Audubon County receives approximately 32.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Squash (Summer) during the growing season.
Audubon County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Squash (Summer) Planting Timeline — Audubon County, IA
Squash (Summer) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 24 | Mar 24 – Apr 7 |
| Transplant Outdoors | May 12 | May 12 – May 26 |
| Direct Sow | May 5 | May 5 – May 26 |
| Harvest | June 30 | Jun 30 – Sep 1 |
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 | Harvest |
| 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
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
158 days in Audubon County
Growing Tips for Audubon 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
Check more plant combinations with our Companion Planting Checker →
Squash (Summer) in Other Locations
Frequently Asked Questions
When should I plant Squash (Summer) in Audubon County, IA?
Audubon County is in Zone 5a with an average last frost of April 28. Plan your Squash (Summer) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Audubon County, IA?
Audubon County, Iowa is in USDA Hardiness Zone 5a. The average last spring frost is April 28 and first fall frost is October 3.
When should I plant Squash (Summer) in Audubon County, IA?
In Audubon County, IA, plant Squash (Summer) after the last frost (around April 28) and before the first frost (around October 3). Best results when soil holds above 50°F.
What growing zone is Audubon County, IA for Squash (Summer)?
Audubon County sits in USDA Zone 5a. Squash (Summer) grows reliably in zones 3a through 11b, so it's a good fit here.
Can Squash (Summer) grow in Audubon County's climate?
Yes — Squash (Summer) grows well in Audubon County's temperate climate. Audubon County averages a 158-day frost-free season, with last frost around April 28 and first frost around October 3.
Your Audubon County Garden Planner — Free
A 22-page printable planner built for Audubon County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.