When to Plant Patty Pan Squash in Iroquois County, IL
Your May game plan for Iroquois County, Illinois
Welcome to May in Zone 5b. These are the moves that will have the biggest impact on your growing season.
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Transplant patty pan squash outside
Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.
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Begin indoor sowing: patty pan squash
Your window is short. These crops want several weeks of indoor growth before they go outside.
A few tasks this May that'll pay off in June
- First harvests: patty pan squash
Patty pan squash is a summer squash with a distinctive flying-saucer shape and scalloped edges. It comes in white, yellow, and green varieties with a mild, nutty flavor.
Iroquois County, Illinois is in USDA Zone 5b. The average last spring frost is April 18 and the first fall frost is October 13, giving you a growing season of approximately 178 days.
At an elevation of 1,345 feet, Iroquois County receives approximately 30 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Patty Pan Squash during the growing season.
Iroquois County Soil Profile
Soil Type
Silt Loam
Soil pH
5.9-6.7
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.
Soil Compatibility in Iroquois County
How your county's soil matches Patty Pan Squash's growing requirements.
Soil pH
Your soil pH (5.9–6.7) overlaps with Patty Pan Squash's range (6.0–7.5), though not a perfect match.
Soil Texture
The silt loam soil in Iroquois County is excellent for Patty Pan Squash — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Patty Pan Squash.
Organic Matter
Organic matter is excellent (4.5%) — Patty Pan Squash will thrive.
How to Plant Patty Pan Squash
Succession Planting Patty Pan Squash
Sow every 5.1 weeks. Last sowing by Aug 14 to harvest before frost.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Patty Pan Squash
Patty Pan Squash needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Patty Pan Squash Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.3" | 0" | ❄️ Dormant |
| Feb | — | 1.4" | 0" | ❄️ Dormant |
| Mar | — | 1.9" | 0" | ❄️ Dormant |
| Apr | 4.3" | 2.8" | 1.5" | 💧 Light watering |
| May | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Jun | 4.3" | 3.6" | 0.7" | 💧 Light watering |
| Jul | 4.3" | 3" | 1.3" | 💧 Light watering |
| Aug | 4.3" | 2.9" | 1.4" | 💧 Light watering |
| Sep | 4.3" | 3.2" | 1.1" | 💧 Light watering |
| Oct | 4.3" | 2.5" | 1.8" | 💧 Light watering |
| Nov | — | 2" | 0" | ❄️ Dormant |
| Dec | — | 1.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Iroquois County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Patty Pan Squash Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Patty Pan Squash Planting Timeline — Iroquois County, IL
Patty Pan Squash Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 14 | Mar 14 – Mar 28 |
| Transplant Outdoors | May 2 | May 2 – May 16 |
| Direct Sow | April 25 | Apr 25 – May 16 |
| Harvest | June 20 | Jun 20 – Jul 18 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · 2-3 times/week
📅 Days to Maturity
45–60 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 5b
📆 Growing Season
178 days in Iroquois County
Growing Tips for Patty Pan Squash in Iroquois County
Direct sow Patty Pan Squash outdoors after April 18 in Iroquois County when soil has warmed and frost danger has passed.
Your generous 178.0-day season in Iroquois County allows multiple plantings of Patty Pan Squash. Sow every 22.0 days for continuous harvest.
Common pests for Patty Pan Squash in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow after last frost. Harvest when 2-4 inches across for best texture and flavor. Larger fruits become seedy and tough. Very prolific producers in warm weather.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Patty Pan Squash in Other Locations
Frequently Asked Questions
When should I plant Patty Pan Squash in Iroquois County, IL?
Iroquois County is in Zone 5b with an average last frost of April 18. Plan your Patty Pan Squash planting based on this frost date — see the calendar above for exact timing.
What planting zone is Iroquois County, IL?
Iroquois County, Illinois is in USDA Hardiness Zone 5b. The average last spring frost is April 18 and first fall frost is October 13.
Your Iroquois County Garden Planner — Free
A 24-page printable planner built for Iroquois County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.