When to Plant Acorn Squash in Orange County, IN
Your May gardening checklist
Welcome to May in Zone 6b. These are the moves that will have the biggest impact on your growing season.
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Get acorn squash seeds going inside
You're about 24 weeks out from your last frost — the perfect window to get these germinating indoors.
Acorn squash is a small winter squash with dark green, ribbed skin and mildly sweet orange flesh. It is perfect for stuffing and roasting as individual servings.
Orange County, Indiana is in USDA Zone 6b. The average last spring frost is April 14 and the first fall frost is October 20, giving you a growing season of approximately 189 days.
At an elevation of 1,246 feet, Orange County receives approximately 34.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Acorn Squash during the growing season.
Orange County Soil Profile
Soil Type
Silt Loam
Soil pH
6.3-7
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 Orange County
How your county's soil matches Acorn Squash's growing requirements.
Soil pH
Your soil pH (6.3–7.0) is within Acorn Squash's preferred range (5.5–7.0).
Soil Texture
The silt loam soil in Orange County is excellent for Acorn Squash — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Acorn Squash.
Organic Matter
Organic matter is excellent (4.8%) — Acorn Squash will thrive.
How to Plant Acorn Squash
Succession Planting Acorn Squash
Sow every 9.1 weeks. Last sowing by Jul 12 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Acorn Squash
Acorn Squash needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.
| Month | Acorn Squash Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.7" | 0" | ❄️ Dormant |
| Feb | — | 1.7" | 0" | ❄️ Dormant |
| Mar | — | 2.2" | 0" | ❄️ Dormant |
| Apr | 4.8" | 3.1" | 1.7" | 💧 Light watering |
| May | 4.8" | 4" | 0.8" | 💧 Light watering |
| Jun | 4.8" | 4.6" | 0.2" | 💧 Light watering |
| Jul | 4.8" | 3.6" | 1.2" | 💧 Light watering |
| Aug | 4.8" | 4.2" | 0.6" | 💧 Light watering |
| Sep | 4.8" | 3" | 1.8" | 💧 Light watering |
| Oct | 4.8" | 2.4" | 2.4" | 🚿 Regular watering |
| Nov | — | 2.6" | 0" | ❄️ Dormant |
| Dec | — | 1.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Orange County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Acorn 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.
Acorn Squash Planting Timeline — Orange County, IN
Acorn Squash Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 10 | Mar 10 – Mar 24 |
| Transplant Outdoors | April 28 | Apr 28 – May 12 |
| Direct Sow | April 21 | Apr 21 – May 12 |
| Harvest | July 21 | Jul 21 – Aug 25 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.1"/week · 1-2 times/week
📅 Days to Maturity
80–100 days
🧪 Soil pH
Needs 5.5–7 · Your soil: ideal
🗺️ USDA Zone
Zone 6b
📆 Growing Season
189 days in Orange County
Growing Tips for Acorn Squash in Orange County
Direct sow Acorn Squash outdoors after April 14 in Orange County when soil has warmed and frost danger has passed.
Common pests for Acorn 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 the ground spot turns orange and the skin is hard. Acorn squash has a shorter storage life than butternut, lasting about 2 months.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Acorn Squash in Other Locations
Frequently Asked Questions
When should I plant Acorn Squash in Orange County, IN?
Orange County is in Zone 6b with an average last frost of April 14. Plan your Acorn Squash planting based on this frost date — see the calendar above for exact timing.
What planting zone is Orange County, IN?
Orange County, Indiana is in USDA Hardiness Zone 6b. The average last spring frost is April 14 and first fall frost is October 20.
Your Orange County Garden Planner — Free
A 24-page printable planner built for Orange County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.