What hardiness zones is Brassica oleracea 'Copenhagen Market' suitable for?

Brassica oleracea 'Copenhagen Market' is suitable for USDA hardiness zones 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b.

What are the sun requirements for Brassica oleracea 'Copenhagen Market'?

Brassica oleracea 'Copenhagen Market' requires Full Sun.

How much water does Brassica oleracea 'Copenhagen Market' need?

Brassica oleracea 'Copenhagen Market' has High water needs.

Brassica oleracea 'Copenhagen Market', Copenhagen Market Cabbage

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Vegetables

Brassica oleracea 'Copenhagen Market'

Copenhagen Market Cabbage

Brassicaceae

Coastal W/S Europe (B. oleracea wild cabbage; Copenhagen Market Danish heirloom early 1900s; round 3-4 lb heads; benchmark early cabbage)

At a Glance

TypeAnnual

HabitUpright

FoliageDeciduous

Height12-15 inches (30-38 cm)

Width18-24 inches (45-60 cm)

Growing Zones

USDA Hardiness Zones

3a - 9b

Zone 3a Zone 3b Zone 4a Zone 4b Zone 5a Zone 5b Zone 6a Zone 6b Zone 7a Zone 7b Zone 8a Zone 8b Zone 9a Zone 9b

These zones indicate the coldest temperatures this plant can typically survive.

What's my zone? →

Frost Tolerancehardy

Key Features

Container Friendly

Maintenancemoderate

Overview

Brassica oleracea 'Copenhagen Market' is an annual vegetable reaching 12-15 inches (30-38 cm) tall with a spread of 18-24 inches (45-60 cm) and an upright, compact habit with a central round head surrounded by wrapper leaves. A Danish heirloom cabbage dating to the early 1900s, it produces round, dense, solid heads 6-8 inches (15-20 cm) in diameter weighing 3-4 pounds (1.4-1.8 kg) with blue-green wrapper leaves and a pale green interior. Short-cored with fine texture. Days to maturity 65-75 from transplant. Growth rate is moderate. Cool-season crop. The standard early round cabbage—widely adapted, reliable, and a benchmark cultivar for home gardens. Tolerates light frost—flavor improves after a light freeze.

Native Range

Brassica oleracea (cabbage group) descended from wild cabbage native to coastal western and southern Europe. 'Copenhagen Market' is a Danish heirloom from the early 1900s.

Suggested Uses

Grown in vegetable gardens for culinary use—coleslaw, sauerkraut, cooking, salads. Round dense 3-4 lb heads. Fine texture short core. Danish heirloom. 65-75 days. Reliable widely adapted. Flavor improves after light frost. Head splitting if watered irregularly. Short storage 2-4 weeks refrigerated. Not suitable for long-term storage.

How to Identify

Distinguished from 'Early Jersey Wakefield' by the round (versus conical/pointed) head shape and the slightly later maturity (65-75 versus 60-70 days). Distinguished from storage cabbages by the shorter storage life and the finer texture. Copenhagen Market—round dense 3-4 lb heads, short-cored, Danish heirloom early 1900s, benchmark early cabbage.

Appearance

Size & Dimensions

Height1' - 1'3"

Width/Spread1'6" - 2'

Colors

Flower Colors

yellow

Foliage Colors

blue

Fall Foliage Colors

no change

Bloom Information

Four-petaled yellow flowers on stalks 3-4 feet (0.9-1.2 m) if not harvested or if vernalized. Bolting splits the head. Harvest when firm.

Detailed Descriptions

Flower Description

Yellow; four-petaled; bolting only

Foliage Description

Blue-green wrapper leaves; pale green interior; round dense head

Growing Conditions

Sun Requirements

Full Sun

Requires 6-8 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range6.0 - 7.5(Neutral)

357912

Soil Types

loam

Drainagewell drained

Water & Climate

Water Needs

High

Frost Tolerance

hardy

Time to Maturity

65-75 days from transplant

Care & Maintenance

Care Guide

Start seed indoors 6-8 weeks before last frost. Transplant after hardening off, spacing 18-24 inches (45-60 cm). Rich, moist, well-drained soil (pH 6.0-7.5). Consistent moisture—irregular watering causes head splitting. Heavy feeder. Days to maturity 65-75 from transplant. Harvest when heads are firm and solid. Tolerates light frost.