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Old Cobblers Farm™ Wicked Tuff Turf Siberian Kale (Cold-Hardy Brassica Variety)
$100.00
Siberian Kale (Cold-Hardy Brassica Variety)
Seed Type & Composition
Siberian Kale is a robust, cold-hardy brassica known for its tender, curly leaves and exceptional frost resistance. This variety thrives in cooler climates, producing nutrient-rich greens high in vitamins A, C, and K, along with calcium and iron. Suitable for direct consumption or wildlife food plots, Siberian Kale’s seeds are non-GMO, carefully selected for high yield, rapid growth, and extended harvest windows in fall and early winter gardens.
Label Information
| Label Metric | Description |
|---|---|
| Purity % | ≥ 95% pure Siberian Kale |
| Germination Rate % | ≥ 80% under optimal conditions |
| Weed Seed % | ≤ 0.5% |
| Other Crop Seed % | ≤ 1% |
| Inert Matter % | ≤ 2% |
| Lot Number | Unique batch identifier |
| Origin | Declared source region for adaptability |
| Test Date | Last germination and purity test date |
| Net Weight | Total weight of seed in packaging |
Geographic & USDA Zone Suitability
| Suitability | Details |
|---|---|
| Geography | Thrives in temperate climates; tolerates cool summers and mild winters |
| USDA Zones | 2 – 9 |
| Best Use Cases | Spring & fall planting, cold-season harvests, overwintering in mild zones |
Sunlight Compatibility
Prefers full sun (6+ hrs/day)
Tolerates partial shade, especially in hotter regions to prevent leaf toughening
Soil Compatibility
| Soil Type | Performance |
|---|---|
| Clay | Tolerates with improved drainage |
| Loam | Ideal — provides balance of nutrients and drainage |
| pH Range | 6.0 – 7.5 |
| Drainage | Well-drained soils essential; raised beds recommended for heavy soils |
Watering & Drought Tolerance
| Phase | Watering Needs |
|---|---|
| Establishment | Keep soil consistently moist; avoid waterlogging |
| Post-Establishment | Water deeply once or twice weekly depending on weather |
| Drought Resistance | Moderate — prolonged drought affects yield and leaf quality |
| Best Practices | Mulch to retain moisture; monitor for leaf wilting |
Germination & Growth Characteristics
| Aspect | Details |
|---|---|
| Germination Time | 5 – 10 days (optimal at 45°F – 85°F) |
| Baby Leaf Harvest | ~25 – 30 days |
| Full Maturity | ~50 – 70 days |
| Growth Habit | Upright rosette with broad, frilly leaves |
| Frost Hardiness | Withstands frost and light snow; flavor improves post-frost |
Cultivation & Maintenance
| Task | Recommendation |
|---|---|
| Soil Prep | Enrich with compost; ensure loose, well-aerated soil |
| Spacing | 12 – 18 inches between plants; 18 – 24 inches between rows |
| Fertilization | Apply balanced fertilizer or compost before planting; side-dress every 4 – 6 weeks |
| Weed Control | Mulch or hand weed; living mulch like clover is effective |
| Pest Management | Monitor for aphids, cabbage worms; use row covers if needed |
Quantity