When to Plant Kohlrabi in Thibodaux, Louisiana (70310)

Location

Thibodaux, Louisiana

ZIP Code

70310

USDA Zone

Last Frost

Tuesday, February 10, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Tuesday, January 13, 2026

Transplant Outdoors

Tuesday, January 27, 2026

Based on last frost Tuesday, February 10, 2026 · Zone 9b

Pro tip: Start Kohlrabi seeds indoors 4 weeks before your last frost date, then transplant outdoors around Tuesday, January 27, 2026.

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🌿 Plant Details

Scientific Name Brassica oleracea var. gongylodes

Days to Maturity 55 days

Mature Height 12-18"

Spread 8"

Type Bulb

Fruit Size Small-Medium (2-3 inch bulb)

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Regular (consistent moisture prevents cracking)

↔️

Spacing

6" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 4-7 days

Ready to Plant Kohlrabi in Thibodaux?

Get your seeds now so they're ready by Tuesday, January 13, 2026.

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🤝 Good Companions

BeetOnionCucumberHerb

⚠️ Avoid Planting Near

TomatoPepperStrawberry

🤝

Full Companion Planting Guide for Kohlrabi

See which plants help Kohlrabi thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🔴 Difficult

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Allow plants to bolt in year 2. Harvest seed pods just before they shatter.

Processing

Thresh dried seed stalks in a bag, separate seeds from chaff by winnowing.

Seed Viability

Up to 4 years when stored cool, dark, and dry.

Pro Tip

Brassica oleracea — crosses with broccoli, cabbage, kale, and Brussels sprouts. Isolate by 1000 feet for purity.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 4 per sq ft of Kohlrabi. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Kohlrabi in Thibodaux, Louisiana? +

In Thibodaux (Zone 9b), start Kohlrabi seeds indoors around Tuesday, January 13, 2026 and transplant outdoors around Tuesday, January 27, 2026.

What is the last frost date for Thibodaux, Louisiana? +

The average last spring frost date for Thibodaux, Louisiana (ZIP 70310) is around Tuesday, February 10, 2026. This is based on NOAA climate normals for USDA Zone 9b.

How long does Kohlrabi take to grow? +

Kohlrabi typically matures in about 55 days from transplanting. In Thibodaux, that means you can expect harvest around Tuesday, January 27, 2026 plus 55 days.

Should I start Kohlrabi indoors or direct sow in Louisiana? +

Kohlrabi should be started indoors 4 weeks before your last frost date. In Thibodaux, that means starting around Tuesday, January 13, 2026.

📚 More Kohlrabi Planting Guides

🗺️

Kohlrabi in Louisiana

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 9b Kohlrabi Guide

All cities in your zone · Avg dates

→

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Growing Kohlrabi in Zone 9b

Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Thibodaux, Louisiana, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Tuesday, January 13, 2026.

Your average last frost date is Tuesday, February 10, 2026. Plan to transplant your Kohlrabi seedlings outdoors around Tuesday, January 27, 2026, about -2 weeks after your last frost date.