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When to Plant Butternut Squash in Grant Parish, LA

Grant Parish, Louisiana Zone 9a May

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Avg. last frost March 3
Avg. first frost November 19
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
Coming up in June — start thinking about
  • First harvests: butternut squash

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Butternut squash is a popular winter squash with a long neck, small seed cavity, and sweet, nutty orange flesh. It stores exceptionally well for months.

Grant Parish, Louisiana is in USDA Zone 9a. The average last spring frost is March 3 and the first fall frost is November 19, giving you a growing season of approximately 261 days.

At an elevation of 356 feet, Grant Parish receives approximately 56.8 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Butternut Squash during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Butternut Squash root diseases.

Grant Parish, LA (Zone 9a) Long season
261 days
Last Spring Frost March 3
261 growing days
First Fall Frost November 19
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Grant Parish Soil Profile

Soil Type

Loam

Soil pH

6.1-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (132 days to spare)
Start indoors: Jan 23 Transplant: Feb 27 🍅 Harvest: May 29 – Jul 3
Recommended (50%) ✓ Fits season (128 days to spare)
Start indoors: Feb 3 Transplant: Mar 10 🍅 Harvest: Jun 9 – Jul 14
Safe Start (90%) ✓ Fits season (132 days to spare)
Start indoors: Feb 24 Transplant: Mar 31 🍅 Harvest: Jun 30 – Aug 4

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 Grant Parish

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

Soil pH

Your soil pH (6.1–7.3) overlaps with Butternut Squash's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Grant Parish is excellent for Butternut Squash — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Butternut Squash.

How to Plant Butternut Squash

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

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 432 gal / 100 sq ft

Monthly Watering Guide for Butternut Squash

Butternut 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 Butternut Squash Needs Rainfall You Supplement Action
Jan 5" 0" ❄️ Dormant
Feb 4.2" 0" ❄️ Dormant
Mar 4.8" 6" 0" ✅ Rainfall sufficient
Apr 4.8" 4.7" 0.1" 💧 Light watering
May 4.8" 4.8" 0" ✅ Rainfall sufficient
Jun 4.8" 4.6" 0.2" 💧 Light watering
Jul 4.8" 6" 0" ✅ Rainfall sufficient
Aug 4.8" 4.9" 0" ✅ Rainfall sufficient
Sep 4.8" 4.4" 0.4" 💧 Light watering
Oct 4.8" 3.5" 1.3" 💧 Light watering
Nov 4.8" 4.2" 0.6" 💧 Light watering
Dec 4.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Grant Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Butternut 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.

Butternut Squash needs ~1,852 GDD — county provides 4,959 GDD Excellent fit

Butternut Squash Planting Timeline — Grant Parish, LA

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors February 3 Feb 3 – Feb 17
Transplant Outdoors March 10 Mar 10 – Mar 24
Direct Sow March 3 Mar 3 – Mar 24
Harvest June 9 Jun 9 – Jul 14

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Only during dry spells

📅 Days to Maturity

85–110 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

261 days in Grant Parish

Growing Tips for Butternut Squash in Grant Parish

Direct sow Butternut Squash outdoors after March 03 in Grant Parish when soil has warmed and frost danger has passed.

Common pests for Butternut 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

Start seeds indoors 3 weeks early or direct sow after frost. Allow 6-8 feet for sprawling vines. Harvest when the skin is hard and uniformly tan. Cure in the sun for 10 days.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Butternut Squash in Grant Parish, LA?

Grant Parish is in Zone 9a with an average last frost of March 3. Plan your Butternut Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Grant Parish, LA?

Grant Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is March 3 and first fall frost is November 19.

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Your Grant Parish Garden Planner — Free

A 24-page printable planner built for Grant Parish (Zone 9a). 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 Grant Parish, LA. Local conditions may vary. Last updated: May 2026.

Sources & credits

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