When to Plant Crookneck Squash in Effingham County, IL
May to-do list for Effingham County, Illinois
May is a pivotal month for Effingham County, Illinois gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Get crookneck squash seeds going inside
Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.
June will be here before you know it — start on
- First harvests: crookneck squash
Yellow crookneck squash is a summer squash with a curved neck and bumpy, bright yellow skin. It has a buttery flavor and is best harvested young when 4-6 inches long.
Effingham County, Illinois is in USDA Zone 6b. The average last spring frost is April 16 and the first fall frost is October 17, giving you a growing season of approximately 184 days.
At an elevation of 953 feet, Effingham County receives approximately 40.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Crookneck Squash to ensure they mature before fall.
Effingham County Soil Profile
Soil Type
Silt Loam
Soil pH
5.8-7.2
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 Effingham County
How your county's soil matches Crookneck Squash's growing requirements.
Soil pH
Your soil pH (5.8–7.2) overlaps with Crookneck Squash's range (6.0–7.5), though not a perfect match.
Soil Texture
The silt loam soil in Effingham County is excellent for Crookneck Squash — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.9%). Annual compost additions will help Crookneck Squash.
How to Plant Crookneck Squash
Succession Planting Crookneck Squash
Sow every 5.1 weeks. Last sowing by Aug 18 to harvest before frost.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Crookneck Squash
Crookneck 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 | Crookneck Squash Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.5" | 0" | ❄️ Dormant |
| Feb | — | 1.8" | 0" | ❄️ Dormant |
| Mar | — | 3.1" | 0" | ❄️ Dormant |
| Apr | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| May | 4.3" | 5.1" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Oct | 4.3" | 3.3" | 1" | 💧 Light watering |
| Nov | — | 2.9" | 0" | ❄️ Dormant |
| Dec | — | 2.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Effingham County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Crookneck 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.
Crookneck Squash Planting Timeline — Effingham County, IL
Crookneck Squash Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 12 | Mar 12 – Mar 26 |
| Transplant Outdoors | April 30 | Apr 30 – May 14 |
| Direct Sow | April 23 | Apr 23 – May 14 |
| Harvest | June 18 | Jun 18 – Jul 16 |
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 | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
45–60 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 6b
📆 Growing Season
184 days in Effingham County
Growing Tips for Crookneck Squash in Effingham County
Direct sow Crookneck Squash outdoors after April 16 in Effingham County when soil has warmed and frost danger has passed.
Your generous 184.0-day season in Effingham County allows multiple plantings of Crookneck Squash. Sow every 22.0 days for continuous harvest.
Common pests for Crookneck 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 on mounds. Pick frequently while small for tender texture. Skin becomes tough and warty on larger fruits. Very productive in warm weather.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Crookneck Squash in Other Locations
Frequently Asked Questions
When should I plant Crookneck Squash in Effingham County, IL?
Effingham County is in Zone 6b with an average last frost of April 16. Plan your Crookneck Squash planting based on this frost date — see the calendar above for exact timing.
What planting zone is Effingham County, IL?
Effingham County, Illinois is in USDA Hardiness Zone 6b. The average last spring frost is April 16 and first fall frost is October 17.
Your Effingham County Garden Planner — Free
A 24-page printable planner built for Effingham 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.