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When to Plant Parsley in Vernon Parish, LA

Vernon Parish, Louisiana Zone 9a May

Your May planting checklist for Vernon Parish, Louisiana

Each item below is timed to Vernon Parish, Louisiana's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 5
Avg. first frost November 16
Soil temp (4") 72°F
Watering Moderate
Pest pressure High
Daylight 13.6 hrs
  1. Start harvesting parsley

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

June will be here before you know it — start on
  • First harvests: parsley

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Parsley is a biennial herb available in flat-leaf (Italian) and curly varieties. It is a nutritional powerhouse rich in vitamins C and K and adds fresh flavor to countless dishes.

Vernon Parish, Louisiana is in USDA Zone 9a. The average last spring frost is March 5 and the first fall frost is November 16, giving you a growing season of approximately 256 days.

At an elevation of 481 feet, Vernon Parish receives approximately 54.2 inches of rainfall annually with predominantly loam soil. Summer highs average 97°F, so Parsley may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Parsley root diseases.

Vernon Parish, LA (Zone 9a) Long season
256 days
Last Spring Frost March 5
256 growing days
First Fall Frost November 16

Vernon Parish Soil Profile

Soil Type

Loam

Soil pH

6.1-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (143 days to spare)
Start indoors: Jan 25 Transplant: Feb 15 🍅 Harvest: Apr 19 – Jun 21
Recommended (50%) ✓ Fits season (137 days to spare)
Start indoors: Feb 5 Transplant: Feb 26 🍅 Harvest: Apr 30 – Jul 2
Safe Start (90%) ✓ Fits season (133 days to spare)
Start indoors: Mar 9 Transplant: Mar 30 🍅 Harvest: Jun 1 – Aug 3

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 Vernon Parish

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

Soil pH

Your soil pH (6.1–7.2) overlaps with Parsley's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Parsley.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Parsley.

How to Plant Parsley

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

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

Succession Planting Parsley

5
successive plantings in your 256-day season

Sow every 6.9 weeks. Last sowing by Aug 28 to harvest before frost.

For a dedicated fall crop, sow by Sep 21.

Plant Water Budget

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

Monthly Watering Guide for Parsley

Parsley needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.

Month Parsley Needs Rainfall You Supplement Action
Jan 4.6" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 2.6" 5.4" 0" ✅ Rainfall sufficient
Apr 2.6" 3.4" 0" ✅ Rainfall sufficient
May 2.6" 3.7" 0" ✅ Rainfall sufficient
Jun 2.6" 4.7" 0" ✅ Rainfall sufficient
Jul 2.6" 5.8" 0" ✅ Rainfall sufficient
Aug 2.6" 5.1" 0" ✅ Rainfall sufficient
Sep 2.6" 4.1" 0" ✅ Rainfall sufficient
Oct 2.6" 3.8" 0" ✅ Rainfall sufficient
Nov 2.6" 4.3" 0" ✅ Rainfall sufficient
Dec 4.6" 0" ❄️ Dormant

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

Parsley 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.

Parsley needs ~1,592 GDD — county provides 5,824 GDD Excellent fit

Parsley Planting Timeline — Vernon Parish, LA

Parsley Planting Calendar

Activity When Date Range
Start Indoors February 5 Feb 5 – Feb 19
Transplant Outdoors February 26 Feb 26 – Mar 12
Direct Sow February 12 Feb 12 – Mar 5
Harvest April 30 Apr 30 – Jul 2
Fall Sowing September 21 Sep 21 – Oct 5

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.6"/week · Natural rainfall sufficient

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

256 days in Vernon Parish

Growing Tips for Parsley in Vernon Parish

Direct sow Parsley outdoors after March 05 in Vernon Parish when soil has warmed and frost danger has passed.

With summer highs reaching 97°F in Vernon Parish, provide afternoon shade for Parsley and water deeply in the morning.

Common pests for Parsley in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Soak seeds overnight as germination is slow. Harvest outer stems first to keep plants productive. Parsley attracts swallowtail butterflies.

Companion Planting

Good Companions

Avoid Planting Near

  • Mint
  • Lettuce

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Parsley in Vernon Parish, LA?

Vernon Parish is in Zone 9a with an average last frost of March 5. Plan your Parsley planting based on this frost date — see the calendar above for exact timing.

What planting zone is Vernon Parish, LA?

Vernon Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is March 5 and first fall frost is November 16.

🌱

Your Vernon Parish Garden Planner — Free

A 24-page printable planner built for Vernon 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Vernon 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.