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When to Plant Raspberries in Lafourche Parish, LA

Lafourche Parish, Louisiana Zone 9b May

Your May planting checklist for Lafourche 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 January 27
Avg. first frost December 18
Soil temp (4") 79°F
Watering Low
Pest pressure High
Daylight 13.5 hrs

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Raspberries are beloved bramble fruits producing sweet, delicate berries in red, golden, black, and purple varieties. They spread by underground runners and are very productive.

Lafourche Parish, Louisiana is in USDA Zone 9b. The average last spring frost is January 27 and the first fall frost is December 18, giving you a growing season of approximately 325 days.

At an elevation of 306 feet, Lafourche Parish receives approximately 54 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Raspberries may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Raspberries will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Raspberries root diseases.

Lafourche Parish, LA (Zone 9b) Year-round
325 days
Last Spring Frost January 27
325 growing days
First Fall Frost December 18
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Lafourche Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Feb 3
Recommended (50%) ✓ Fits season
Transplant: Feb 10
Safe Start (90%) ✓ Fits season
Transplant: Mar 18

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 Lafourche Parish

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

Soil pH

Your soil pH (5.0–6.2) overlaps with Raspberries's range (5.5–6.5), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Raspberries.

Organic Matter

Organic matter is moderate (2.1%). Annual compost additions will help Raspberries.

How to Plant Raspberries

24"
Between Plants
72"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
Watering frequency Only during dry spells
Season total 12 gal / 100 sq ft

Monthly Watering Guide for Raspberries

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

Month Raspberries Needs Rainfall You Supplement Action
Jan 4.3" 4.3" 0" ✅ Rainfall sufficient
Feb 4.3" 4.5" 0" ✅ Rainfall sufficient
Mar 4.3" 5.2" 0" ✅ Rainfall sufficient
Apr 4.3" 4.2" 0.1" 💧 Light watering
May 4.3" 4.8" 0" ✅ Rainfall sufficient
Jun 4.3" 5.3" 0" ✅ Rainfall sufficient
Jul 4.3" 5.3" 0" ✅ Rainfall sufficient
Aug 4.3" 5.6" 0" ✅ Rainfall sufficient
Sep 4.3" 4.3" 0" ✅ Rainfall sufficient
Oct 4.3" 3.4" 0.9" 💧 Light watering
Nov 4.3" 3.5" 0.8" 💧 Light watering
Dec 4.3" 3.6" 0.7" 💧 Light watering

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

Raspberries 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.

Raspberries needs ~12,456 GDD — county provides 7,416 GDD May not mature

Raspberries Planting Timeline — Lafourche Parish, LA

Raspberries Planting Calendar

Activity When Date Range
Transplant Outdoors February 10 Feb 10 – Feb 24

· 24" apart · Rows 72" apart

Month-by-Month Timeline

MonthActivities
January
February Transplant Outdoors
March
April
May
June
July
August
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

365–730 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

325 days in Lafourche Parish

Growing Tips for Raspberries in Lafourche Parish

Direct sow Raspberries outdoors after January 27 in Lafourche Parish when soil has warmed and frost danger has passed.

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

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

Your 326.0-day growing season in Lafourche Parish is tight for Raspberries (365.0-730.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Provide a trellis for support. Prune summer-bearing types by removing spent canes after harvest. For ever-bearing types, mow all canes in late winter for a single fall crop.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Raspberries in Lafourche Parish, LA?

Lafourche Parish is in Zone 9b with an average last frost of January 27. Plan your Raspberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lafourche Parish, LA?

Lafourche Parish, Louisiana is in USDA Hardiness Zone 9b. The average last spring frost is January 27 and first fall frost is December 18.

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Your Lafourche Parish Garden Planner — Free

A 24-page printable planner built for Lafourche Parish (Zone 9b). 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 Lafourche 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.