Botanical Name: Brassica oleracea
Days to Maturity: 75–100 days
Hardiness: Frost-tolerant biennial, grown as an annual
Plant Dimensions: 5"–7" in diameter. 2–4 pounds at maturity
Variety Information: Round, deep red to purple heads
Attributes: Disease Resistant, Good for Containers
When to Sow Outside: 4 to 6 weeks before your average last frost date for a summer crop, or 10 to 12 weeks before your average first fall frost date for a fall crop.
When to Start Inside: RECOMMENDED. 6 to 8 weeks before your average last frost date, transplanting 2 to 4 weeks before your average last frost date. For fall crop, 4 to 6 weeks before transplanting outdoors in summer. Ideal soil temperature for germination is 75°–85°F. Mild Climates: Sow in fall for a cool-season harvest.
Days to Emerge: 7–12 days
Seed Depth: ¼"
Seed Spacing: A group of 3 seeds every 12" – 24"
Row Spacing: 24"–36"
Thinning: When 3" tall, thin to 1 every 12" – 24"
Harvesting: Harvest heads when they are well developed, firm, and solid when squeezed. Cut off heads at base with a sharp knife. Cabbages left in the ground beyond maturity are more subject to disease and splitting. Harvest in the morning if possible. If harvested in the heat, dunk in ice water to reduce "field heat" and increase storage time. Allow to drain before storing.