At a Glance
Overview
Lactuca sativa 'Red Sails' is a popular loose-leaf lettuce cultivar prized for its distinctive burgundy-red foliage and exceptional heat tolerance. This compact annual develops deeply lobed, oak-like leaves that emerge green at the base and transition to rich red-bronze at the tips and margins, creating a striking gradient effect. The leaves are tender with a slightly ruffled texture and maintain their color intensity throughout the growing season.
Unlike heading lettuce varieties, Lactuca sativa 'Red Sails' forms a loose rosette of leaves that can be harvested continuously by picking outer leaves while allowing the center to continue growing. The plant typically reaches 8-10 inches in height and width, making it ideal for container gardening and small spaces. Its compact growth habit and colorful foliage also make it an attractive ornamental addition to flower beds and decorative vegetable gardens.
Native Range
Lactuca sativa is believed to have originated in the Mediterranean region and western Asia, likely descended from the wild species Lactuca serriola. However, 'Red Sails' is a modern cultivar developed through selective breeding programs.Suggested Uses
Lactuca sativa 'Red Sails' works well in vegetable gardens, container plantings, and as an ornamental edible in flower beds. Excellent for succession planting, cut-and-come-again harvesting, and mixed salad gardens. The colorful foliage makes it attractive in window boxes and decorative containers.How to Identify
Appearance
Size & Dimensions
Height8" - 1'
Width/Spread10" - 1'2"
Bloom Information
When bolting occurs (typically in sustained temperatures above 75°F / 24°C), a central flower stalk 2–3 feet (60–90 cm) tall bears small yellow composite flower heads. 'Red Sails' resists bolting 10–14 days longer than standard loose-leaf cultivars. Once the flower stalk elongates, leaves become bitter and harvest quality declines rapidly.Detailed Descriptions
Foliage Description
Green at base transitioning to burgundy-red at tips and marginsGrowing Conditions
Sun Requirements
Requires 4-8 hours of direct sunlight daily
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight
Care & Maintenance
Care Guide
Lactuca sativa 'Red Sails' requires consistent moisture and well-draining soil rich in organic matter. Water regularly to maintain even soil moisture, as drought stress can cause the leaves to become bitter and may trigger premature bolting. Apply a balanced fertilizer at planting and side-dress with compost or a nitrogen-rich fertilizer every 3-4 weeks during the growing season. In hot climates, provide afternoon shade to prevent bolting and maintain leaf quality. Mulch around plants to retain moisture and suppress weeds.Pruning
Lactuca sativa 'Red Sails' does not require traditional pruning but benefits from regular harvesting of outer leaves to encourage continued growth. Remove any yellowing or damaged leaves promptly to maintain plant health. If flower stalks begin to form, remove them immediately to prevent the leaves from becoming bitter, though this will only delay the inevitable end of the harvest season.Maintenance Level
lowContainer Growing
✓ Suitable for container growing
Minimum container size: 2 gallons
⚠️ Toxicity Warning
Lactuca sativa 'Red Sails' is generally safe for consumption by humans and most pets. However, as with all lettuce varieties, wash thoroughly before eating and consume in moderation as part of a balanced diet.Planting Guide
Planting Methods & Timing
Planting Method
both
Indoor Start
4 weeks before last frost
Direct Sow Timing
2-4 weeks before last frost, then succession plant every 2 weeks
Days to Maturity
45–55 days
Plant Spacing
6 inches