Copenhagen Market Cabbage Seeds — Heirloom | 1909 Danish Early Cabbage, Solid 3–4 lb Round Heads, Split-Resistant | 65–75 Days

Introduced by H. Hartmann & Co. of Denmark in 1909, Copenhagen Market (Brassica oleracea var. capitata) is the largest early round-headed cabbage variety available for summer harvest — and one of the most consistently reliable heirloom cabbages in cultivation. Short-stemmed, compact plants produce solid, tightly wrapped green heads 7–8 inches in diameter weighing 3–4 lbs, with excellent field-holding ability and strong resistance to early splitting. Sweet, delicate flavor raw or cooked. 1.0 g / 200+ seeds per packet. 65–75 days to maturity.

• Botanical name: Brassica oleracea var. capitata
• Days to maturity: 65–75 days
• Head size: 7–8 inches diameter, 3–4 lbs
• Head color: Green
• Flavor: Sweet and delicate
• Split resistance: Excellent — holds well in the field
• Packet size: 1.0 g / 200+ seeds
• Sowing depth: ¼–½ inch
• Plant spacing: 18 inches (1.5 feet)
• Row spacing: 24 inches (2 feet)
• Growth habit: Compact mound, short-stemmed
• Soil: Composted, moist, pH 6.0–7.5
• Light: Full sun to partial shade
• USDA Zones: 3–12
• Type: Heirloom, open-pollinated, non-GMO, annual

A Danish Classic Since 1909

Copenhagen Market was developed in Denmark and introduced to the American seed trade by H. Hartmann & Co. in 1909 — making it one of the best-documented early round-headed cabbages available. It was selected as the largest early variety of its type, bred for uniform round heads, split resistance, and reliable performance across a wide range of growing conditions. Over 115 years of continuous cultivation have proven its adaptability from Zone 3 through Zone 12.

Kitchen Uses

The sweet, delicate flavor works across a wide range of preparations. Shred raw for coleslaw and fresh salads — the crisp texture holds up well in dressed slaws. Ferment shredded leaves with salt for sauerkraut or kimchi. Add to soups, stews, and braised dishes in the final 10–15 minutes. Stir-fry with garlic and ginger over high heat. Slow-cook with butter, caraway, and apple for a classic Northern European preparation. The large outer leaves work well as wraps for stuffed cabbage rolls. Rich in vitamin K, vitamin C, fiber, and potassium.

Growing Notes

Start indoors 4–6 weeks before transplanting and harden off over one week before moving outdoors. Direct sow ¼–½ inch deep in moist, composted soil (pH 6.0–7.5). Space plants 18 inches apart in rows 24 inches apart. Full sun to partial shade. Keep soil consistently moist — add compost at planting and mulch around the base to retain moisture. Harvest when heads reach 7 inches in diameter and feel firm when squeezed. To harvest, remove the entire plant including stem and root to keep the soil healthy for the next planting.

Pest & Disease Management

Common pests include cabbage worms, loopers, flea beetles, and slugs. Use floating row covers or fine netting to exclude moths and caterpillars. Plant nasturtiums as trap crops. Practice crop rotation — avoid planting brassicas in the same bed more than once every 5–6 years to reduce clubroot pressure. Maintain a clean growing environment by removing leaf debris.

Frequently Asked Questions

What makes Copenhagen Market an early variety?

At 65–75 days, Copenhagen Market matures significantly faster than many heading cabbages. It was specifically selected as the largest early round-headed variety, making it suitable for summer harvest when later varieties are still developing.

How do I know when to harvest?

Harvest when heads reach approximately 7 inches in diameter and feel solid and firm when squeezed. Do not wait until heads begin to crack — split resistance is good but not indefinite. Remove the entire plant including stem and root at harvest.

Can Copenhagen Market be grown in warm climates?

Yes — it is rated for Zones 3–12. In warmer zones, time plantings for spring or fall when temperatures are in the 55–70°F range. Avoid midsummer planting in hot climates as temperatures above 80°F can cause bolting.

Packed and shipped by Box Garden Seeds LLC — heirloom seeds grown without GMOs, selected for flavor, resilience, and your garden’s success.