When to Plant Kohlrabi in Toledo, Ohio (43607)

Location

Toledo, Ohio

ZIP Code

43607

USDA Zone

Last Frost

Wednesday, April 15, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Wednesday, March 18, 2026

Transplant Outdoors

Wednesday, April 1, 2026

Based on last frost Wednesday, April 15, 2026 · Zone 6b

Pro tip: Start Kohlrabi seeds indoors 4 weeks before your last frost date, then transplant outdoors around Wednesday, April 1, 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 Toledo?

Get your seeds now so they're ready by Wednesday, March 18, 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 Toledo, Ohio? +

In Toledo (Zone 6b), start Kohlrabi seeds indoors around Wednesday, March 18, 2026 and transplant outdoors around Wednesday, April 1, 2026.

What is the last frost date for Toledo, Ohio? +

The average last spring frost date for Toledo, Ohio (ZIP 43607) is around Wednesday, April 15, 2026. This is based on NOAA climate normals for USDA Zone 6b.

How long does Kohlrabi take to grow? +

Kohlrabi typically matures in about 55 days from transplanting. In Toledo, that means you can expect harvest around Wednesday, April 1, 2026 plus 55 days.

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

Kohlrabi should be started indoors 4 weeks before your last frost date. In Toledo, that means starting around Wednesday, March 18, 2026.

📚 More Kohlrabi Planting Guides

🗺️

Kohlrabi in Ohio

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 6b Kohlrabi Guide

All cities in your zone · Avg dates

→

Other Plants for Toledo

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Growing Kohlrabi in Zone 6b

Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Toledo, Ohio, which is in USDA Hardiness Zone 6b, you should start seeds indoors around Wednesday, March 18, 2026.

Your average last frost date is Wednesday, April 15, 2026. Plan to transplant your Kohlrabi seedlings outdoors around Wednesday, April 1, 2026, about -2 weeks after your last frost date.