How long does kohlrabi take to grow?

Kohlrabi is ready to harvest in about 55 days, measured from planting.

When to Plant Kohlrabi

Plant kohlrabi by your frost dates, not the calendar: start seeds indoors about 7 weeks before your last spring frost, then plant outdoors about 2 weeks before your last frost. Pick your USDA zone below for exact dates.

Kohlrabi planting calendar

spring planting

🌱

Start seeds indoors

Feb 25

🌿

Transplant outdoors

Apr 1

🌾

Projected first harvest

May 26

fall planting

🌿

Direct sow

Aug 11

🌾

Projected first harvest

Oct 5

JJan

FFeb

MMar

AApr

MMay

JJun

JJul

AAug

SSep

OOct

NNov

DDec

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7a — approximate

Kohlrabi is ready to harvest in about 55 days. Dates above use zone 7 as a reference point. Pick your zone below, or set your ZIP in HomeSown for dates tuned to your exact location.

Varieties to grow

1 variety of kohlrabi in the HomeSown library. Tap any for its full grow guide.

Kohlrabi →

Common problems with kohlrabi

What to watch for, with identification and treatment for each

Cabbage Maggot Cabbage Root Maggot Diamondback Moth Harlequin Bug Cabbage Worms Cabbage Looper Clubroot Black Rot Boron Deficiency Bolting Bacterial Soft Rot Alternaria Leaf Spot

🌱 Grow kohlrabi with a calendar built for your exact yard

HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.

Start your free garden →

When to plant kohlrabi in your zone

Zone 3 →Zone 4 →Zone 5 →Zone 6 →Zone 7 →Zone 8 →Zone 9 →Zone 10 →