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When to Plant Garlic in Franklin Parish, LA

Franklin Parish, Louisiana Zone 8b May

May in Franklin Parish, Louisiana — your action list

Welcome to May in Zone 8b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost March 9
Avg. first frost November 12
Soil temp (4") 75°F
Watering Low
Pest pressure High
Daylight 13.6 hrs

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Garlic is a pungent allium planted in fall and harvested the following summer. Hardneck varieties produce edible flower stalks (scapes) and are more cold-hardy.

Franklin Parish, Louisiana is in USDA Zone 8b. The average last spring frost is March 9 and the first fall frost is November 12, giving you a growing season of approximately 248 days.

At an elevation of 300 feet, Franklin Parish receives approximately 58.7 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Garlic during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Garlic root diseases.

Franklin Parish, LA (Zone 8b) Long season
248 days
Last Spring Frost March 9
248 growing days
First Fall Frost November 12
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Franklin Parish Soil Profile

Soil Type

Loam

Soil pH

6.1-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 5 🍅 Harvest: Jun 4 – Nov 19
Recommended (50%) ✗ May not fit
Transplant: Mar 9 🍅 Harvest: Jun 8 – Nov 23
Safe Start (90%) ✗ May not fit
Transplant: Apr 6 🍅 Harvest: Jul 6 – Dec 21

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 Franklin Parish

How your county's soil matches Garlic's growing requirements.

Soil pH

Your soil pH (6.1–7.2) is within Garlic's preferred range (6.0–7.5).

Soil Texture

The loam soil in Franklin Parish is excellent for Garlic — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help Garlic.

How to Plant Garlic

1"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 6 weeks before your first frost date for a fall harvest.

Plant Water Budget

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

Monthly Watering Guide for Garlic

Garlic needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Garlic Needs Rainfall You Supplement Action
Jan 5.1" 0" ❄️ Dormant
Feb 5.1" 0" ❄️ Dormant
Mar 2.2" 4.8" 0" ✅ Rainfall sufficient
Apr 2.2" 4.4" 0" ✅ Rainfall sufficient
May 2.2" 5.3" 0" ✅ Rainfall sufficient
Jun 2.2" 4.8" 0" ✅ Rainfall sufficient
Jul 2.2" 6.5" 0" ✅ Rainfall sufficient
Aug 2.2" 5.6" 0" ✅ Rainfall sufficient
Sep 2.2" 4.5" 0" ✅ Rainfall sufficient
Oct 2.2" 3.3" 0" ✅ Rainfall sufficient
Nov 2.2" 4.4" 0" ✅ Rainfall sufficient
Dec 4.9" 0" ❄️ Dormant

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

Garlic 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.

Garlic needs ~2,888 GDD — county provides 4,340 GDD Excellent fit

Garlic Planting Timeline — Franklin Parish, LA

Garlic Planting Calendar

Activity When Date Range
Fall Sowing October 1 Oct 1 – Oct 15

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

Month-by-Month Timeline

MonthActivities
January
February
March
April
May
June
July
August
September
October Fall Sowing
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

90–240 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 8b

📆 Growing Season

248 days in Franklin Parish

Growing Tips for Garlic in Franklin Parish

Direct sow Garlic outdoors after March 09 in Franklin Parish when soil has warmed and frost danger has passed.

Your 248.0-day growing season in Franklin Parish is tight for Garlic (90.0-240.0 days to maturity). Start indoors and choose early-maturing varieties.

Common pests for Garlic in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

With 59" of annual rainfall in Franklin Parish, ensure good drainage for Garlic — excess moisture can promote root rot and fungal diseases.

General growing tips

Plant individual cloves pointed end up in fall, 6 weeks before ground freezes. Mulch heavily with straw. Harvest when lower leaves begin to brown but 5-6 green leaves remain.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans
  • Asparagus

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Garlic in Franklin Parish, LA?

Franklin Parish is in Zone 8b with an average last frost of March 9. Plan your Garlic planting based on this frost date — see the calendar above for exact timing.

What planting zone is Franklin Parish, LA?

Franklin Parish, Louisiana is in USDA Hardiness Zone 8b. The average last spring frost is March 9 and first fall frost is November 12.

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Your Franklin Parish Garden Planner — Free

A 24-page printable planner built for Franklin Parish (Zone 8b). 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 Franklin Parish, LA. 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.