West Coast Seeds Rouge d'Hiver Romaine Lettuce Seeds
This heirloom lettuce has been celebrated since 1885 as hardy and productive and slow to bolt. It has striking reddish brown, flat, smooth leaves with green veins that form a distinct, loose head with good cold tolerance. 60 days, OP.
Approx. 580 seeds
Timing: Lettuce is fast growing and prefers cool conditions. Start seeds indoors in trays and transplant 3-4 weeks later. Or direct sow every 2-3 weeks starting in mid-spring. Optimal soil temperature for germination: 10-22°C (50-72°F).
Seeding: Sow seeds 5mm-1cm (1/4-1/2") deep.
Growing: If growing for baby leaf, space plants 2-12cm (1-5") apart. For full head size, space 30cm (12") apart. Allow 45-90cm (18-36") between rows. Soil with lots of organic matter that drains freely is best. Water regularly to prevent bitterness. A pH of 6.0-6.5 is ideal, so add compost and lime before planting. One cup of balanced organic fertilizer per 3m (10') will provide adequate nutrition.
Seed Specs: Canada No. 1 germination rate: 70%. Usual seed life: 3 years.