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When to Plant Cucumber in LaSalle Parish, LA

LaSalle Parish, Louisiana Zone 8b May

This month in LaSalle Parish, Louisiana

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

Avg. last frost March 2
Avg. first frost November 19
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Bring in the cucumber

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

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

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Cucumbers are a warm-season vine crop available in slicing and pickling varieties. They are prolific producers when given warmth, moisture, and a trellis to climb.

LaSalle Parish, Louisiana is in USDA Zone 8b. The average last spring frost is March 2 and the first fall frost is November 19, giving you a growing season of approximately 262 days.

At an elevation of 262 feet, LaSalle Parish receives approximately 52.2 inches of rainfall annually with predominantly loam soil. Summer highs average 95°F, so Cucumber may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cucumber root diseases.

LaSalle Parish, LA (Zone 8b) Long season
262 days
Last Spring Frost March 2
262 growing days
First Fall Frost November 19
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LaSalle Parish Soil Profile

Soil Type

Loam

Soil pH

6.2-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (140 days to spare)
Start indoors: Jan 23 Transplant: Mar 6 🍅 Harvest: May 1 – Jun 26
Recommended (50%) ✓ Fits season (136 days to spare)
Start indoors: Feb 2 Transplant: Mar 16 🍅 Harvest: May 11 – Jul 6
Safe Start (90%) ✓ Fits season (142 days to spare)
Start indoors: Feb 21 Transplant: Apr 4 🍅 Harvest: May 30 – Jul 25

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 LaSalle Parish

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

Soil pH

Your soil pH (6.2–7.2) overlaps with Cucumber's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Cucumber.

How to Plant Cucumber

0.5"
Planting Depth
24"
Between Plants
48"
Between Rows

Succession Planting Cucumber

6
successive plantings in your 262-day season

Sow every 5.7 weeks. Last sowing by Sep 10 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.8″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,546 gal / 100 sq ft

Monthly Watering Guide for Cucumber

Cucumber needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Cucumber Needs Rainfall You Supplement Action
Jan 4.6" 0" ❄️ Dormant
Feb 4.3" 0" ❄️ Dormant
Mar 6.5" 4.8" 1.7" 💧 Light watering
Apr 6.5" 4.4" 2.1" 💧 Light watering
May 6.5" 3.9" 2.6" 💧 Light watering
Jun 6.5" 4" 2.5" 💧 Light watering
Jul 6.5" 5.8" 0.7" 💧 Light watering
Aug 6.5" 5.3" 1.2" 💧 Light watering
Sep 6.5" 4.1" 2.4" 💧 Light watering
Oct 6.5" 3.5" 3" 💧 Light watering
Nov 6.5" 3.6" 2.9" 💧 Light watering
Dec 3.8" 0" ❄️ Dormant

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

Cucumber 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.

Cucumber needs ~1,275 GDD — county provides 5,567 GDD Excellent fit

Cucumber Planting Timeline — LaSalle Parish, LA

Cucumber Planting Calendar

Activity When Date Range
Start Indoors February 2 Feb 2 – Feb 16
Transplant Outdoors March 16 Mar 16 – Mar 30
Direct Sow March 9 Mar 9 – Mar 30
Harvest May 11 May 11 – Jul 6

Plant 0.5" deep · 24" apart · Rows 48" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

262 days in LaSalle Parish

Growing Tips for Cucumber in LaSalle Parish

Direct sow Cucumber outdoors after March 02 in LaSalle Parish when soil has warmed and frost danger has passed.

Common pests for Cucumber in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost or start indoors 3 weeks early. Provide a trellis for vining types to save space and improve air circulation. Harvest frequently to encourage production.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cucumber in LaSalle Parish, LA?

LaSalle Parish is in Zone 8b with an average last frost of March 2. Plan your Cucumber planting based on this frost date — see the calendar above for exact timing.

What planting zone is LaSalle Parish, LA?

LaSalle Parish, Louisiana is in USDA Hardiness Zone 8b. The average last spring frost is March 2 and first fall frost is November 19.

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Your LaSalle Parish Garden Planner — Free

A 24-page printable planner built for LaSalle 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 LaSalle 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.