How to Grow Red Sails
Lactuca sativa
Red Sails is a beloved heirloom lettuce variety known for its crisp leaves and reliable performance in cool weather. Gardeners prize this easy-to-grow crop for its ability to withstand light frosts while delivering fresh greens quickly from spring through fall.
📷 Wikipedia: LettuceStarting Red Sails: indoors or direct sow?
🏠 Start indoors 3 weeks before your last spring frost, then move the seedlings outside.
If starting indoors, move sturdy seedlings outdoors after all danger of frost has passed, hardening them off gradually for a week before planting.
Soil, care & harvest
Prepare your soil to a pH between 6.0 and 7.0, ensuring it is loose and well-draining. As a cool-season crop, you should sow seeds directly outdoors or start them indoors 2 to 6 weeks before the last expected frost date. Press seeds gently into the soil at a depth of about one-quarter inch. Expect germination to occur within 7 to 10 days under consistent moisture.
Space your lettuce plants 6 to 8 inches apart to allow proper airflow and head development. While this variety does not require trellising, keep the soil consistently moist with about one inch of water per week to prevent bitterness. Apply a light layer of mulch around the base to retain moisture and suppress weeds, but avoid letting mulch touch the leaves directly.
Watch for aphids, flea beetles, slugs, and leafminers; hand-pick pests or use row covers early. Prevent downy mildew and tipburn by watering at the base rather than overhead, especially in wet conditions. Harvest outer leaves when plants are 45 to 55 days old, cutting them close to the stem to encourage continued growth.
When to Plant Red Sails
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | — | June – July | July – September |
| Zone 2 | — | May – July | July – September |
| Zone 3 | — | May – June | June – October |
| Zone 4 | — | April – June | June – October |
| Zone 5 | — | April – May | June – November |
| Zone 6 | — | April – May | May – November |
| Zone 7 | — | March – May | May – November |
| Zone 8 | — | March – April | April – December |
| Zone 9 | — | February – March | March – December |
| Zone 10 | — | January – March | March – December |
| Zone 11 | — | January – February | February – December |
| Zone 12 | — | January – February | February – December |
| Zone 13 | — | January – February | February – December |
Companion Plants for Red Sails
✓ Good companions
Loose soil from carrot roots helps lettuce root development
Repels aphids and improves lettuce growth and flavor
Deters aphids, slugs, and other pests that damage lettuce
Repel nematodes and aphids while attracting beneficial insects
Act as trap crop for aphids and cucumber beetles
Attracts beneficial insects and doesn't compete for nutrients
Fast-growing radishes break up soil and don't compete for space
Similar growing requirements and can be succession planted together
✗ Keep away from
Competes for similar nutrients and can shade out lettuce
Inhibits growth of most garden plants through allelopathy
Allelopathic effects inhibit lettuce germination and growth
Nutrition Facts
Per 100g serving (USDA FoodData Central)
