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When to Plant Crookneck Squash in Hanson County, SD

Hanson County, South Dakota Zone 5a May

What to do in May

A quick May briefing for Hanson County, South Dakota gardeners — what's urgent, what's next, and what can wait.

Avg. last frost May 6
Avg. first frost October 5
Soil temp (4") 56°F
Watering Low
Pest pressure Low
Daylight 14.5 hrs
  1. Move crookneck squash into the garden

    Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.

  2. Sow crookneck squash where they'll grow

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

Before June arrives, get these ready
  • 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.

Hanson County, South Dakota is in USDA Zone 5a. The average last spring frost is May 6 and the first fall frost is October 5, giving you a growing season of approximately 152 days.

At an elevation of 614 feet, Hanson County receives approximately 28.4 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Crookneck Squash to ensure they mature before fall.

Hanson County, SD (Zone 5a) Moderate season
152 days
Last Spring Frost May 6
152 growing days
First Fall Frost October 5
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Hanson County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (65 days to spare)
Start indoors: Mar 23 Transplant: May 11 🍅 Harvest: Jun 29 – Jul 27
Recommended (50%) ✓ Fits season (61 days to spare)
Start indoors: Apr 1 Transplant: May 20 🍅 Harvest: Jul 8 – Aug 5
Safe Start (90%) ✓ Fits season (61 days to spare)
Start indoors: Apr 11 Transplant: May 30 🍅 Harvest: Jul 18 – Aug 15

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 Hanson County

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

Soil pH

Your soil pH (6.4–7.4) is within Crookneck Squash's preferred range (6.0–7.5).

Soil Texture

The loam soil in Hanson County is excellent for Crookneck Squash — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.6%). 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 152-day season

Sow every 5.1 weeks. Last sowing by Aug 06 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 291 gal / 100 sq ft

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 0.7" 0" ❄️ Dormant
Feb 0.9" 0" ❄️ Dormant
Mar 1.7" 0" ❄️ Dormant
Apr 3.3" 0" ❄️ Dormant
May 4.3" 4.7" 0" ✅ Rainfall sufficient
Jun 4.3" 4.1" 0.2" 💧 Light watering
Jul 4.3" 3.5" 0.8" 💧 Light watering
Aug 4.3" 3.4" 0.9" 💧 Light watering
Sep 4.3" 2.7" 1.6" 💧 Light watering
Oct 4.3" 1.7" 2.6" 🚿 Regular watering
Nov 1.1" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Hanson 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 ~643 GDD — county provides 1,862 GDD Excellent fit

Crookneck Squash Planting Timeline — Hanson County, SD

Crookneck Squash Planting Calendar

Activity When Date Range
Start Indoors April 1 Apr 1 – Apr 15
Transplant Outdoors May 20 May 20 – Jun 3
Direct Sow May 13 May 13 – Jun 3
Harvest July 8 Jul 8 – Aug 5

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

Month-by-Month Timeline

MonthActivities
January
February
March
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 · Only during dry spells

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 5a

📆 Growing Season

152 days in Hanson County

Growing Tips for Crookneck Squash in Hanson County

Direct sow Crookneck Squash outdoors after May 06 in Hanson County when soil has warmed and frost danger has passed.

Your generous 152.0-day season in Hanson 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

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

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

Hanson County is in Zone 5a with an average last frost of May 6. Plan your Crookneck Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hanson County, SD?

Hanson County, South Dakota is in USDA Hardiness Zone 5a. The average last spring frost is May 6 and first fall frost is October 5.

🌱

Your Hanson County Garden Planner — Free

A 24-page printable planner built for Hanson 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.

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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 Hanson 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.