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When to Plant Shallot in Iberville Parish, LA

Iberville Parish, Louisiana Zone 9a May

Your May game plan for Iberville Parish, Louisiana

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost February 14
Avg. first frost December 5
Soil temp (4") 78°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Basket week: shallot

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

Before June arrives, get these ready
  • First harvests: shallot

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Shallots are a gourmet allium prized for their complex, sweet, and mild flavor. Each bulb multiplies into a cluster, making them easy and rewarding to grow.

Iberville Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 5, giving you a growing season of approximately 294 days.

At an elevation of 464 feet, Iberville Parish receives approximately 59 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 103°F, so Shallot may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Shallot will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Shallot root diseases.

Iberville Parish, LA (Zone 9a) Year-round
294 days
Last Spring Frost February 14
294 growing days
First Fall Frost December 5

Iberville Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

4.8-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (155 days to spare)
Start indoors: Jan 8 Transplant: Feb 5 🍅 Harvest: May 7 – Jun 25
Recommended (50%) ✓ Fits season (154 days to spare)
Start indoors: Jan 17 Transplant: Feb 14 🍅 Harvest: May 16 – Jul 4
Safe Start (90%) ✓ Fits season (144 days to spare)
Start indoors: Feb 11 Transplant: Mar 11 🍅 Harvest: Jun 10 – Jul 29

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 Iberville Parish

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

Soil pH

Your soil pH (4.8–6.2) is more acidic than Shallot prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Iberville Parish warms quickly in spring but drains fast. Shallot will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Shallot.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Shallot.

How to Plant Shallot

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Plant Water Budget

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

Monthly Watering Guide for Shallot

Shallot needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Shallot Needs Rainfall You Supplement Action
Jan 4.2" 0" ❄️ Dormant
Feb 4.3" 4.9" 0" ✅ Rainfall sufficient
Mar 4.3" 6" 0" ✅ Rainfall sufficient
Apr 4.3" 4.6" 0" ✅ Rainfall sufficient
May 4.3" 5.1" 0" ✅ Rainfall sufficient
Jun 4.3" 4.5" 0" ✅ Rainfall sufficient
Jul 4.3" 5.6" 0" ✅ Rainfall sufficient
Aug 4.3" 5.8" 0" ✅ Rainfall sufficient
Sep 4.3" 4.9" 0" ✅ Rainfall sufficient
Oct 4.3" 4" 0.3" 💧 Light watering
Nov 4.3" 3.9" 0.4" 💧 Light watering
Dec 4.3" 5.3" 0" ✅ Rainfall sufficient

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

Shallot 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.

Shallot needs ~2,861 GDD — county provides 8,038 GDD Excellent fit

Shallot Planting Timeline — Iberville Parish, LA

Shallot Planting Calendar

Activity When Date Range
Start Indoors January 17 Jan 17 – Jan 31
Transplant Outdoors February 14 Feb 14 – Feb 28
Direct Sow January 24 Jan 24 – Feb 14
Harvest May 16 May 16 – Jul 4
Fall Sowing October 10 Oct 10 – Oct 24

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

294 days in Iberville Parish

Growing Tips for Shallot in Iberville Parish

Direct sow Shallot outdoors after February 14 in Iberville Parish when soil has warmed and frost danger has passed.

Sandy soil in Iberville Parish dries quickly — mulch Shallot with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 103°F in Iberville Parish, provide afternoon shade for Shallot and water deeply in the morning.

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

General growing tips

Plant sets in fall for spring harvest or early spring for summer harvest. Mulch heavily if overwintering. Harvest when tops brown and dry, then cure for storage.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Shallot in Iberville Parish, LA?

Iberville Parish is in Zone 9a with an average last frost of February 14. Plan your Shallot planting based on this frost date — see the calendar above for exact timing.

What planting zone is Iberville Parish, LA?

Iberville Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 5.

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Your Iberville Parish Garden Planner — Free

A 24-page printable planner built for Iberville 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 Iberville Parish, LA. Local conditions may vary. Last updated: May 2026.

Sources & credits

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