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An image of the plant grown with seed for O.S. Cross Cabbage Seeds - Enormous Flat Solid Heads, Ideal for Sauerkraut, Great for Exhibition, Heirloom Quality, Non-GMO
  • An image of the plant grown with seed for O.S. Cross Cabbage Seeds - Enormous Flat Solid Heads, Ideal for Sauerkraut, Great for Exhibition, Heirloom Quality, Non-GMO
O.S. Cross Cabbage Seeds - Enormous Flat Solid Heads, Ideal for Sauerkraut, Great for Exhibition, Heirloom Quality, Non-GMO
$4.99 CAD
Maturity

90 Days
Sunlight

Full Sun
Watering

Regular

Difficulty

Medium difficulty
Life cycle

Biennial
Grow Zones

3 - 9

Quick Reference

Zones

Plant Hardiness Zones describe the average minimum winter temperature for a region. They tell you where a plant can reliably survive outdoors. For example, Zone 5 can handle colder winters than Zone 9. Matching a plant to your zone increases the chance of long-term success.

Days

  • For food crops: Days to maturity is the expected number of days from planting to first harvest. This helps gardeners plan their growing season and time their harvests.
  • For non-food plants: Days to germination indicates how long it usually takes seeds to sprout under normal conditions. This is key for starting seeds successfully.

Types

  • F1 (Hybrid): A cross between two parent varieties. Hybrids are bred for vigor, uniformity, and specific traits such as disease resistance. Seeds saved from F1 plants don’t grow true to type. That means if you try to regrow them from seed, the plant won't necessarily be the same as last year's
  • OP (Open-Pollinated): Varieties that naturally pollinate and remain stable across generations. Seeds can be saved and replanted with consistent results.
  • HM (Heirloom): An open-pollinated variety that has been handed down for many generations. Heirlooms are valued for flavor, tradition, and genetic diversity.

Grows

  • Outdoors: Well-suited for garden beds, raised beds, or open soil, where natural conditions are stable.
  • Windowsill: Compact plants that thrive in containers indoors, often needing only modest light.
  • Anywhere: Highly adaptable plants that perform reliably in both indoor and outdoor settings.

Lifecycle

  • Annual: Grows, flowers, sets seed, and dies in one growing season. Many vegetables and flowers are annuals.
  • Perennial: Lives for multiple years, regrowing each season after going dormant. Often used in landscaping or long-term food crops.
  • Sp. Perennial (Self-Perennializing): A plant that reseeds itself or self-pollinates, giving the effect of perennial growth even if individual plants live shorter lives.

Size

Indicates the recommended container size or soil depth for best growth.

  • “X″ Pot”: The ideal pot diameter (e.g., 5″ Pot), ensuring enough root space.
  • DS (Deep Soil): Requires planting directly in the ground or in a deep raised bed, as shallow pots restrict growth.
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  • Exceptionally Large Heads: Produces uniform, flat, and solid cabbage heads, perfect for both cooking and competitive exhibitions.
  • Flexible Growing Conditions: Thrives in average garden soil, preferring a sunny location. Ideal for spring planting or earlier indoor starts.
  • Extended Growing Season: Germinates within 7-10 days and can be sown in intervals for a continuous harvest into the fall season.
  • Versatile Culinary Uses: Exceptional for traditional sauerkraut recipes due to its large, dense heads. Also great fresh in salads or cooked dishes.
  • Resilient Crop: Tolerant to a variety of weather conditions. Ensure ample watering in high heat to prevent bolting and promote uninterrupted growth.

Experience the magnificence of the O.S. Cross Cabbage, a standout in any garden with its enormous, flat, and solid heads. Known for its impressive size, this cabbage variety is ideal for culinary use, particularly in crafting mouth-watering sauerkraut, as well as for competitive exhibitions. This heirloom, non-GMO variety offers a rewarding gardening experience with its adaptability and resilience.

Plant your seeds in a sunny location with average garden soil to enjoy a bountiful harvest. The O.S. Cross Cabbage thrives in various climates, germinating within 7-10 days, and can be sown in intervals for a continuous supply into the fall. Ensure regular watering to support its growth and prevent bolting. Whether you're a beginner or an experienced gardener, these seeds promise a satisfying journey from seed to table.
Size
How much seed do I need?

Seeds per gram: 300
Average germination rate: 85%

Package sizes

  • 50 seeds — 43 plants — covers about 260–390 sq. ft.
  • 500 seeds — 425 plants — covers about 2,550–3,850 sq. ft.
  • 1000 seeds — 850 plants — covers about 5,100–7,650 sq. ft.
  • 5000 seeds — 4,250 plants — covers about 25,500–38,250 sq. ft.

Plant growth and coverage

  • Large, upright rosette forming very flat, solid heads; vigorous, space-demanding habit
  • Height: 30–45 cm (12–18 in)
  • Spread: 60–90 cm (24–36 in)
  • Spacing: 60–90 cm (24–36 in) between plants; 75–90 cm (30–36 in) between rows
  • Plan roughly 6–9 sq. ft. per mature plant for best head size and airflow

Choosing a packet size

  • 50 seeds are ideal for home gardeners trialing O.S. Cross or filling a few beds. Great for small gardens and for making a couple batches of sauerkraut.
  • 500 seeds suit larger home plots, community gardens, or small-scale preservation projects. Provides enough for staggered plantings and steady harvests into fall.
  • 1000 seeds are a strong choice for small market growers or serious homesteaders planning multiple successions. Supports reliable field blocks and bulk cabbage processing.
  • 5000 seeds are best for commercial and market growers establishing larger acreage or wholesale programs. Ideal for uniform, exhibition-quality heads and high-volume kraut production.
GROWING INSTRUCTIONS

Sow O.S. Cross Cabbage seeds outdoors in spring after the last frost. Plant seeds 1/2 inch deep in rows, spacing them 12-18 inches apart. For an earlier start, sow indoors 6-8 weeks before the last frost date.

To germinate seeds indoors, maintain a temperature of around 21°C (70°F). Transplant seedlings outdoors when they have at least two true leaves and after hardening off for a week. Ensure they are spaced adequately to accommodate their large size.

Water regularly, especially during dry spells, to prevent bolting. Mulch to retain soil moisture and deter weeds. Harvest when heads are firm and reach desired size. Enjoy fresh, in salads, or as delicious homemade sauerkraut.
SHIPPING & RETURNS

In Canada, we use fast shipping from our Canadian warehouses. You can expect delivery in 1-3 days.

In the USA, We use our US warehouses, and you can expect your order in 1-3 days, too.

No postaged lettermail or slow shipping from across the world. No customs fees or orders withheld at the border. Tracking numbers for all orders.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible. Our return policy covers you for late, damaged or defective products.

 Read Our Shipping & Returns Policy

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