When to Plant Kohlrabi in Burrel, California (93607)

Location

Burrel, California

ZIP Code

93607

USDA Zone

Last Frost

Friday, February 20, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Friday, January 23, 2026

Transplant Outdoors

Friday, February 6, 2026

Based on last frost Friday, February 20, 2026 · Zone 9a

Pro tip: Start Kohlrabi seeds indoors 4 weeks before your last frost date, then transplant outdoors around Friday, February 6, 2026.

🌿 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 Burrel?

Get your seeds now so they're ready by Friday, January 23, 2026.

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🤝 Good Companions

BeetOnionCucumberHerb

⚠️ Avoid Planting Near

TomatoPepperStrawberry

See the full companion planting guide for Kohlrabi →

🛠️ 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 Burrel, California? +

In Burrel (Zone 9a), start Kohlrabi seeds indoors around Friday, January 23, 2026 and transplant outdoors around Friday, February 6, 2026.

What is the last frost date for Burrel, California? +

The average last spring frost date for Burrel, California (ZIP 93607) is around Friday, February 20, 2026. This is based on NOAA climate normals for USDA Zone 9a.

How long does Kohlrabi take to grow? +

Kohlrabi typically matures in about 55 days from transplanting. In Burrel, that means you can expect harvest around Friday, February 6, 2026 plus 55 days.

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

Kohlrabi should be started indoors 4 weeks before your last frost date. In Burrel, that means starting around Friday, January 23, 2026.

📚 More Kohlrabi Planting Guides

🗺️

Kohlrabi in California

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 9a Kohlrabi Guide

All cities in your zone · Avg dates

→

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Growing Kohlrabi in Zone 9a

Kohlrabi (Brassica oleracea var. gongylodes) is a popular garden vegetable. In Burrel, California, which is in USDA Hardiness Zone 9a, you should start seeds indoors around Friday, January 23, 2026.

Your average last frost date is Friday, February 20, 2026. Plan to transplant your Kohlrabi seedlings outdoors around Friday, February 6, 2026, about -2 weeks after your last frost date.