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When to Plant Crookneck Squash in Edmunds County, SD

Edmunds County, South Dakota Zone 4b May

Top priorities for Edmunds County, South Dakota gardeners in May

Here's what deserves your attention in Edmunds County, South Dakota this month. Everything below is tailored to Zone 4b and timed around your local frost dates.

Avg. last frost May 10
Avg. first frost September 28
Soil temp (4") 53°F
Watering Low
Pest pressure Low
Daylight 14.7 hrs
  1. Transplant crookneck squash outside

    Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.

  2. Direct-sow crookneck squash

    Succession planting is the secret here. Put in a row now, another in 2 weeks, a third in 4.

A few tasks this May that'll pay off in June
  • Starting indoors: crookneck squash

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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.

Edmunds County, South Dakota is in USDA Zone 4b. The average last spring frost is May 10 and the first fall frost is September 28, giving you a growing season of approximately 141 days.

At an elevation of 935 feet, Edmunds County receives approximately 33.7 inches of rainfall annually with predominantly loam soil. Summer highs average 82°F, so choose short-season varieties of Crookneck Squash to ensure they mature before fall.

Edmunds County, SD (Zone 4b) Short season
141 days
Last Spring Frost May 10
141 growing days
First Fall Frost September 28
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Edmunds County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (46 days to spare)
Start indoors: Mar 20 Transplant: May 22 🍅 Harvest: Jul 10 – Aug 7
Recommended (50%) ✓ Fits season (43 days to spare)
Start indoors: Mar 29 Transplant: May 31 🍅 Harvest: Jul 19 – Aug 16
Safe Start (90%) ✓ Fits season (45 days to spare)
Start indoors: Apr 7 Transplant: Jun 9 🍅 Harvest: Jul 28 – Aug 25

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 Edmunds County

How your county's soil matches Crookneck Squash's growing requirements.

Soil pH

Your soil pH (6.4–7.6) overlaps with Crookneck Squash's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Edmunds 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

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Crookneck Squash

3
successive plantings in your 141-day season

Sow every 5.1 weeks. Last sowing by Jul 30 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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 0.8" 0" ❄️ Dormant
Feb 1.1" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 3.3" 0" ❄️ Dormant
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 6.1" 0" ✅ Rainfall sufficient
Jul 4.3" 4.5" 0" ✅ Rainfall sufficient
Aug 4.3" 4.4" 0" ✅ Rainfall sufficient
Sep 4.3" 2.9" 1.4" 💧 Light watering
Oct 2.1" 0" ❄️ Dormant
Nov 1.3" 0" ❄️ Dormant
Dec 0.8" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Edmunds 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 needs ~604 GDD — county provides 1,621 GDD Excellent fit

Crookneck Squash Planting Timeline — Edmunds County, SD

Crookneck Squash Planting Calendar

Activity When Date Range
Start Indoors March 29 Mar 29 – Apr 12
Transplant Outdoors May 31 May 31 – Jun 14
Direct Sow May 24 May 24 – Jun 14
Harvest July 19 Jul 19 – Aug 16

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors
May Transplant Outdoors Direct Sow
June Transplant Outdoors Direct Sow
July Harvest
August Harvest
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 4b

📆 Growing Season

141 days in Edmunds County

Growing Tips for Crookneck Squash in Edmunds County

Direct sow Crookneck Squash outdoors after May 10 in Edmunds County when soil has warmed and frost danger has passed.

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

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Crookneck Squash in Edmunds County, SD?

Edmunds County is in Zone 4b with an average last frost of May 10. Plan your Crookneck Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Edmunds County, SD?

Edmunds County, South Dakota is in USDA Hardiness Zone 4b. The average last spring frost is May 10 and first fall frost is September 28.

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Your Edmunds County Garden Planner — Free

A 24-page printable planner built for Edmunds County (Zone 4b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Edmunds County, SD. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.