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When to Plant Mache in Bienville Parish, LA

Bienville Parish, Louisiana Zone 8b May

May in Bienville Parish, Louisiana — your action list

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Bienville Parish, Louisiana.

Avg. last frost March 16
Avg. first frost November 12
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Harvest mache as they ripen

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

June prep starts now
  • First harvests: mache

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Mache (corn salad) is a cold-hardy salad green with small, rounded, tender leaves and a mild, nutty flavor. It thrives in cool weather and even overwinters in many climates.

Bienville Parish, Louisiana is in USDA Zone 8b. The average last spring frost is March 16 and the first fall frost is November 12, giving you a growing season of approximately 241 days.

At an elevation of 438 feet, Bienville Parish receives approximately 56 inches of rainfall annually with predominantly loam soil. Summer highs average 94°F, providing good warmth for Mache during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Mache root diseases.

Bienville Parish, LA (Zone 8b) Long season
241 days
Last Spring Frost March 16
241 growing days
First Fall Frost November 12

Bienville Parish Soil Profile

Soil Type

Loam

Soil pH

5.9-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (160 days to spare)
Start indoors: Feb 3 Transplant: Mar 10 🍅 Harvest: Apr 21 – May 26
Recommended (50%) ✓ Fits season (164 days to spare)
Start indoors: Feb 9 Transplant: Mar 16 🍅 Harvest: Apr 27 – Jun 1
Safe Start (90%) ✓ Fits season (155 days to spare)
Start indoors: Mar 7 Transplant: Apr 11 🍅 Harvest: May 23 – Jun 27

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 Bienville Parish

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

Soil pH

Your soil pH (5.9–6.9) overlaps with Mache's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Mache.

Organic Matter

Organic matter is moderate (2.9%). Annual compost additions will help Mache.

How to Plant Mache

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Mache

7
successive plantings in your 241-day season

Sow every 4.6 weeks. Last sowing by Sep 13 to harvest before frost.

For a dedicated fall crop, sow by Sep 03.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 695 gal / 100 sq ft

Monthly Watering Guide for Mache

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

Month Mache Needs Rainfall You Supplement Action
Jan 4.5" 0" ❄️ Dormant
Feb 4.2" 0" ❄️ Dormant
Mar 4.3" 5.3" 0" ✅ Rainfall sufficient
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 4.8" 0" ✅ Rainfall sufficient
Jun 4.3" 4.8" 0" ✅ Rainfall sufficient
Jul 4.3" 6.5" 0" ✅ Rainfall sufficient
Aug 4.3" 4.8" 0" ✅ Rainfall sufficient
Sep 4.3" 4.3" 0" ✅ Rainfall sufficient
Oct 4.3" 4.1" 0.2" 💧 Light watering
Nov 4.3" 3.9" 0.4" 💧 Light watering
Dec 5" 0" ❄️ Dormant

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

Mache 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.

Mache needs ~1,025 GDD — county provides 4,940 GDD Excellent fit

Mache Planting Timeline — Bienville Parish, LA

Mache Planting Calendar

Activity When Date Range
Start Indoors February 9 Feb 9 – Feb 23
Transplant Outdoors March 16 Mar 16 – Mar 30
Direct Sow March 2 Mar 2 – Mar 23
Harvest April 27 Apr 27 – Jun 1
Fall Sowing September 3 Sep 3 – Sep 17

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

241 days in Bienville Parish

Growing Tips for Mache in Bienville Parish

Direct sow Mache outdoors after March 16 in Bienville Parish when soil has warmed and frost danger has passed.

Your generous 241.0-day season in Bienville Parish allows multiple plantings of Mache. Sow every 20.0 days for continuous harvest.

General growing tips

Direct sow in early spring or late summer for fall and winter harvest. Seeds need light to germinate so press gently into soil surface. Harvest whole rosettes.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Mache in Bienville Parish, LA?

Bienville Parish is in Zone 8b with an average last frost of March 16. Plan your Mache planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bienville Parish, LA?

Bienville Parish, Louisiana is in USDA Hardiness Zone 8b. The average last spring frost is March 16 and first fall frost is November 12.

🌱

Your Bienville Parish Garden Planner — Free

A 24-page printable planner built for Bienville 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 Bienville 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.