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When to Plant Onion in East Carroll Parish, LA

Onions are a fundamental kitchen staple available in yellow, white, and red varieties. Choose long-day, short-day, or intermediate types based on your latitude.

East Carroll Parish, Louisiana is in USDA Zone 8a. The average last spring frost is March 9 and the first fall frost is November 16, giving you a growing season of approximately 252 days.

At an elevation of 55 feet, East Carroll Parish receives approximately 56.1 inches of rainfall annually with predominantly loam soil. Summer highs average 96ยฐF, so Onion may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Onion root diseases.

East Carroll Parish, LA (Zone 8a) Long season
252 days
Last Spring Frost March 9
252 growing days
First Fall Frost November 16

East Carroll Parish Soil Profile

Soil Type

Loam

Soil pH

6.2-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (117 days to spare)
Start indoors: Jan 23 Transplant: Feb 27 🍅 Harvest: May 29 – Jul 17
Recommended (50%) ✓ Fits season (112 days to spare)
Start indoors: Feb 2 Transplant: Mar 9 🍅 Harvest: Jun 8 – Jul 27
Safe Start (90%) ✓ Fits season (113 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Jun 22 – Aug 10

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 146 gal / 100 sq ft
Onion needs ~2,310 GDD — county provides 5,544 GDD Excellent fit

Onion Planting Timeline โ€” East Carroll Parish, LA

Onion Planting Calendar

Activity When Date Range
Start Indoors February 2 Feb 2 โ€“ Feb 16
Transplant Outdoors March 9 Mar 9 โ€“ Mar 23
Direct Sow February 23 Feb 23 โ€“ Mar 16
Fall Sowing September 7 Sep 7 โ€“ Sep 21
Harvest June 8 Jun 8 โ€“ Jul 27

Plant 1" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors Direct Sow
March Transplant Outdoors Direct Sow
April โ€”
May โ€”
June Harvest
July Harvest
August โ€”
September Fall Sowing
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

90โ€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 8a

Growing Season

252 days

Growing Tips for East Carroll Parish

Start seeds indoors 8-10 weeks before transplanting. Match day-length type to your latitude. Stop watering when tops begin to fall over and cure bulbs for 2-3 weeks before storage.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans
  • Asparagus

Level Up Your Garden

Frequently Asked Questions

When should I plant Onion in East Carroll Parish, LA?

East Carroll Parish is in Zone 8a with an average last frost of March 9. Plan your Onion planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is East Carroll Parish, LA?

East Carroll Parish, Louisiana is in USDA Hardiness Zone 8a. The average last spring frost is March 9 and first fall frost is November 16.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help East Carroll Parish gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

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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 East Carroll Parish, LA. Local conditions may vary. Last updated: April 2026.