Grow Lettuce Paris Island Cos – A Classic Romaine with Crisp, Sweet Leaves

Lettuce Paris Island Cos is a trusted romaine variety, valued for its crisp texture, sweet flavour, and excellent bolt resistance. Producing tall, dense heads up to 30 cm high, this variety forms dark green outer leaves with a pale, tender heart. Known for its vigorous growth and resistance to tip burn, it thrives in UK gardens, raised beds, and containers, providing a steady supply of fresh, homegrown leaves throughout summer and early autumn.

Growing Lettuce Paris Island Cos

This variety is well-suited for the UK climate, performing best in cooler temperatures with consistent moisture. It’s an ideal choice for gardeners looking for a reliable, easy-to-grow lettuce.

Sowing and Planting

• Sowing Period: Sow seeds from March to July for a continuous supply of fresh leaves.
• Seed Depth: Sow 3 mm deep in seed trays or directly outdoors in prepared soil.
• Germination: Seeds typically sprout within 7–14 days in warm conditions.
• Transplanting: Once seedlings have two or three true leaves, thin to 15–20 cm apart for full head formation.

Site and Soil

• Position: Prefers full sun, but can tolerate partial shade in hot weather.
• Soil: Grows best in moist but well-drained soil, enriched with organic matter.
• Preparation: Incorporate well-rotted compost before sowing for improved growth and soil health.

Care and Maintenance

• Watering: Keep soil consistently moist to prevent leaves from turning bitter.
• Feeding: A balanced fertiliser every few weeks supports healthy growth.
• Mulching: Helps retain moisture and suppress weeds for low-maintenance care.
• Protection: Netting may be required to deter slugs and snails from young plants.

Harvesting

• Timing: Ready to pick from June to October, around 50–70 days after sowing.
• Method: Cut the entire head at the base or pick individual leaves for ongoing harvests.
• Storage: Freshly picked leaves can be stored in the fridge for up to a week.

Culinary Uses

Paris Island Cos lettuce is versatile in the kitchen, offering crisp, sweet leaves perfect for:

• Salads – The classic choice for fresh, crunchy salads.
• Wraps – Large leaves make an excellent alternative to tortillas.
• Grilled Lettuce – Try halving the heads and lightly grilling for a unique smoky flavour.

This variety produces high-quality, flavourful leaves, making it a brilliant addition to any home garden.