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When to Plant Broccoli in Iberville Parish, LA

Iberville Parish, Louisiana Zone 9a April

Your April game plan for Iberville Parish, Louisiana

Your garden in Iberville Parish, Louisiana is working on a schedule, even when you're not. Here's where you should be this April.

Avg. last frost February 14
Avg. first frost December 5
Soil temp (4") 69°F
Watering Low
Pest pressure High
Daylight 12.7 hrs
  1. Start harvesting broccoli

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

May prep starts now
  • First harvests: broccoli

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Broccoli is a nutrient-dense cool-season crop that produces large central heads followed by smaller side shoots. It is one of the most popular garden vegetables.

Iberville Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 5, giving you a growing season of approximately 294 days.

At an elevation of 464 feet, Iberville Parish receives approximately 59 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 103°F, so Broccoli may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Broccoli will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Broccoli root diseases.

Iberville Parish, LA (Zone 9a) Year-round
294 days
Last Spring Frost February 14
294 growing days
First Fall Frost December 5
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Iberville Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

4.8-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (190 days to spare)
Start indoors: Jan 8 Transplant: Feb 5 🍅 Harvest: Apr 9 – May 21
Recommended (50%) ✓ Fits season (189 days to spare)
Start indoors: Jan 17 Transplant: Feb 14 🍅 Harvest: Apr 18 – May 30
Safe Start (90%) ✓ Fits season (179 days to spare)
Start indoors: Feb 11 Transplant: Mar 11 🍅 Harvest: May 13 – 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 Iberville Parish

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

Soil pH

Your soil pH (4.8–6.2) is more acidic than Broccoli prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Broccoli.

Organic Matter

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

How to Plant Broccoli

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

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

Succession Planting Broccoli

5
successive plantings in your 294-day season

Sow every 6.9 weeks. Last sowing by Sep 06 to harvest before frost.

For a dedicated fall crop, sow by Oct 10.

Plant Water Budget

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

Monthly Watering Guide for Broccoli

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

Month Broccoli Needs Rainfall You Supplement Action
Jan 4.2" 0" ❄️ Dormant
Feb 4.3" 4.9" 0" ✅ Rainfall sufficient
Mar 4.3" 6" 0" ✅ Rainfall sufficient
Apr 4.3" 4.6" 0" ✅ Rainfall sufficient
May 4.3" 5.1" 0" ✅ Rainfall sufficient
Jun 4.3" 4.5" 0" ✅ Rainfall sufficient
Jul 4.3" 5.6" 0" ✅ Rainfall sufficient
Aug 4.3" 5.8" 0" ✅ Rainfall sufficient
Sep 4.3" 4.9" 0" ✅ Rainfall sufficient
Oct 4.3" 4" 0.3" 💧 Light watering
Nov 4.3" 3.9" 0.4" 💧 Light watering
Dec 4.3" 5.3" 0" ✅ Rainfall sufficient

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

Broccoli 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.

Broccoli needs ~2,044 GDD — county provides 8,038 GDD Excellent fit

Broccoli Planting Timeline — Iberville Parish, LA

Broccoli Planting Calendar

Activity When Date Range
Start Indoors January 17 Jan 17 – Jan 31
Transplant Outdoors February 14 Feb 14 – Feb 28
Direct Sow January 24 Jan 24 – Feb 14
Harvest April 18 Apr 18 – May 30
Fall Sowing October 10 Oct 10 – Oct 24

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

294 days in Iberville Parish

Growing Tips for Broccoli in Iberville Parish

Direct sow Broccoli outdoors after February 14 in Iberville Parish when soil has warmed and frost danger has passed.

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

Summer highs in Iberville Parish reach 103°F — grow Broccoli as a spring or fall crop. Use shade cloth if planting in summer.

Common pests for Broccoli in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Provide consistent moisture to prevent hollow stems. Harvest heads before yellow flowers appear.

Recommended Broccoli Varieties for Iberville Parish

Heat-tolerant broccoli — plant as early spring or fall crop

Arcadia Marathon Green Magic

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Broccoli Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Allow plants to flower 2nd year; collect dry pods.
Storage Store airtight; viable 5 years at 35°F, under 50% humidity.

Isolate 1/2 mile from other brassicas. Biennial — must overwinter roots.

Frequently Asked Questions

When should I plant Broccoli in Iberville Parish, LA?

Iberville Parish is in Zone 9a with an average last frost of February 14. Plan your Broccoli planting based on this frost date — see the calendar above for exact timing.

What planting zone is Iberville Parish, LA?

Iberville Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 5.

🌱

Your Iberville Parish Garden Planner — Free

A 24-page printable planner built for Iberville 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 Iberville 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.