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When to Plant Green Beans in Jefferson Parish, LA

Jefferson Parish, Louisiana Zone 9a April

April to-do list for Jefferson Parish, Louisiana

April is a pivotal month for Jefferson Parish, Louisiana gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost January 27
Avg. first frost December 18
Soil temp (4") 69°F
Watering Low
Pest pressure High
Daylight 12.7 hrs
  1. Basket week: green beans

    If you can't use it all right away, check the food-preservation section of your planner.

A few tasks this April that'll pay off in May
  • First harvests: green beans

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Green beans are a warm-season staple available as bush or pole types. Bush beans produce a concentrated harvest while pole beans provide a longer picking season.

Jefferson Parish, Louisiana is in USDA Zone 9a. 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 314 feet, Jefferson Parish receives approximately 55.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100°F, so Green Beans may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Green Beans will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Green Beans root diseases.

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

Soil Type

Sandy Loam

Soil pH

5-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (210 days to spare)
Transplant: Jan 20 🍅 Harvest: Mar 17 – May 12
Recommended (50%) ✓ Fits season (213 days to spare)
Transplant: Jan 27 🍅 Harvest: Mar 24 – May 19
Safe Start (90%) ✓ Fits season (184 days to spare)
Transplant: Mar 4 🍅 Harvest: Apr 29 – Jun 24

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 Jefferson Parish

How your county's soil matches Green Beans's growing requirements.

Soil pH

Your soil pH (5.0–6.1) is more acidic than Green Beans prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Green Beans.

Organic Matter

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

How to Plant Green Beans

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Green Beans

7
successive plantings in your 325-day season

Sow every 5.7 weeks. Last sowing by Oct 14 to harvest before frost.

Plant Water Budget

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

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Green Beans

Green Beans needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Green Beans Needs Rainfall You Supplement Action
Jan 3.9" 4.6" 0" ✅ Rainfall sufficient
Feb 3.9" 4.4" 0" ✅ Rainfall sufficient
Mar 3.9" 4.8" 0" ✅ Rainfall sufficient
Apr 3.9" 4.4" 0" ✅ Rainfall sufficient
May 3.9" 4.1" 0" ✅ Rainfall sufficient
Jun 3.9" 5.7" 0" ✅ Rainfall sufficient
Jul 3.9" 5.9" 0" ✅ Rainfall sufficient
Aug 3.9" 5.2" 0" ✅ Rainfall sufficient
Sep 3.9" 3.6" 0.3" 💧 Light watering
Oct 3.9" 3.7" 0.2" 💧 Light watering
Nov 3.9" 4.8" 0" ✅ Rainfall sufficient
Dec 3.9" 3.9" 0" ✅ Rainfall sufficient

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

Green Beans 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.

Green Beans needs ~1,438 GDD — county provides 8,150 GDD Excellent fit

Green Beans Planting Timeline — Jefferson Parish, LA

Green Beans Planting Calendar

Activity When Date Range
Direct Sow February 3 Feb 3 – Feb 24
Harvest March 31 Mar 31 – May 26

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

50–65 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

325 days in Jefferson Parish

Growing Tips for Green Beans in Jefferson Parish

Direct sow Green Beans outdoors after January 27 in Jefferson Parish when soil has warmed and frost danger has passed.

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

With summer highs reaching 100°F in Jefferson Parish, provide afternoon shade for Green Beans and water deeply in the morning.

Common pests for Green Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost when soil is warm. Provide sturdy supports for pole varieties. Pick beans regularly when young and tender to encourage continued production.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic
  • Fennel

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Green Beans Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Allow pods to dry fully on vine until they rattle.
Storage Store airtight; viable 4 years at 35°F, under 45% humidity.

Avoid harvesting during damp weather. Isolate 25 ft between varieties.

Frequently Asked Questions

When should I plant Green Beans in Jefferson Parish, LA?

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

What planting zone is Jefferson Parish, LA?

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

🌱

Your Jefferson Parish Garden Planner — Free

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

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.