Planting Timeline
Showing dates for Red Sails in USDA Zone 7
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Red Sails · Zones 2–11
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 3 | — | — | May – August | July – October |
| Zone 4 | — | — | April – August | June – October |
| Zone 5 | — | — | April – August | June – October |
| Zone 6 | — | — | March – September | May – November |
| Zone 7 | — | — | March – September | April – November |
| Zone 8 | — | — | February – October | April – December |
| Zone 9 | — | — | January – November | March – December |
| Zone 10 | — | — | January – December | February – December |
Complete Growing Guide
When you're preparing to grow Red Sails lettuce, start by selecting a site that receives 4-6 hours of sunlight daily. This variety's heat tolerance makes it more forgiving than most lettuces, but some afternoon shade in zones 7-9 will extend your harvest window during summer months.
Amend your soil with 2-3 inches of compost or well-aged manure, working it into the top 6 inches. Red Sails performs best in loose, well-draining soil with a pH between 6.0-7.0. If your soil tends to compact or stays soggy after rain, consider raised beds or adding perlite to improve drainage.
For direct sowing, plant seeds 1/4 inch deep in rows 12 inches apart, spacing seeds 1 inch apart. You can start sowing 2 weeks before your last frost date and continue succession planting every 2-3 weeks through summer. In zones 3-6, you can sow until mid-August for fall harvests. For indoor starting, sow seeds 4-5 weeks before transplanting, keeping soil temperature around 65-70°F for optimal germination.
When transplanting seedlings, wait until they have 3-4 true leaves and harden them off for 5-7 days. Space transplants 8-10 inches apart to allow for their full, frilly growth habit. Plant in the evening or on cloudy days to reduce transplant shock.
Fertilize with a balanced 10-10-10 fertilizer at planting, then side-dress with nitrogen-rich compost or fish emulsion every 3 weeks. Avoid over-fertilizing with nitrogen late in the season, as this can reduce the intensity of Red Sails' signature red coloring.
The biggest mistake gardeners make is inconsistent watering. Maintain steady soil moisture with 1-1.5 inches weekly, watering at soil level to prevent disease. Mulch around plants with straw or shredded leaves to retain moisture and keep roots cool.
To maximize your colorful harvest, avoid overcrowding plants. Red Sails develops its best burgundy tones when it has adequate air circulation and isn't competing for light. In hot climates, use shade cloth (30-50%) during peak summer to prevent premature bolting while maintaining good color development.
Harvesting
Harvest Red Sails lettuce when leaves reach 4-6 inches long, typically 45-55 days from seeding. The best indicator is when the burgundy-red edges are fully developed and vibrant, contrasting beautifully with the green centers. Leaves should feel crisp and substantial, not limp or thin.
For the sweetest flavor and crispest texture, harvest in early morning when leaves are fully hydrated from overnight moisture. Use the 'cut-and-come-again' method by harvesting outer leaves first, cutting them 1 inch above the growing point with clean scissors or a sharp knife. This allows the center to continue producing new growth for 3-4 additional harvests.
Alternatively, harvest the entire head by cutting at soil level when the plant reaches full size but before any signs of bolting appear. Red Sails will show bolting by developing a tall, central stem with small yellow flowers. If you notice the stem beginning to elongate, harvest immediately as leaves will become bitter quickly. The variety's excellent bolt resistance gives you a longer harvest window than most lettuces, but don't push your luck in extreme heat.
Storage & Preservation
Fresh Red Sails lettuce stores best when harvested dry and immediately refrigerated. Gently wash leaves in cold water, spin dry thoroughly, and store in perforated plastic bags or containers lined with paper towels. Properly stored, it maintains quality for 7-10 days in the refrigerator at 32-36°F.
For longer preservation, Red Sails works excellently in mesclun freeze-drying blends or can be dehydrated for winter salad seasonings. The colorful leaves retain much of their burgundy hue when properly dried at 95°F until crisp. While freezing destroys the crisp texture, frozen Red Sails can be used in smoothies or cooked dishes. Consider lacto-fermenting whole small heads as you would cabbage for a unique, tangy addition to winter meals. The variety's mild flavor profile makes it particularly suitable for quick pickling in rice vinegar for Asian-inspired dishes.
History & Origin
Red Sails lettuce earned its prestigious All-America Selections award in 1985, marking it as one of the standout vegetable introductions of the mid-1980s. Developed by plant breeders focused on creating lettuces that could withstand increasing summer heat while maintaining visual appeal, Red Sails represented a breakthrough in combining ornamental beauty with practical garden performance.
The variety emerged during a period when American gardeners were becoming more interested in colorful, gourmet salad greens beyond traditional iceberg lettuce. Its oak-leaf type parentage traces back to European loose-leaf varieties, but Red Sails was specifically bred for North American growing conditions and climate challenges.
The name 'Red Sails' reflects both its distinctive burgundy coloration and the way its deeply frilled, oak-like leaves seem to flutter in garden breezes like sails catching wind. Since its introduction, it has become a staple in both home gardens and commercial mesclun production, proving that vegetables can be both beautiful and functional. The variety's success helped pave the way for the colorful salad green revolution that followed in the 1990s and 2000s.
Advantages
- +Exceptional heat tolerance extends growing season through summer when other lettuces fail
- +Stunning burgundy-red edges create dramatic color contrast in salads and garden beds
- +Superior bolt resistance provides 2-3 weeks longer harvest window than standard varieties
- +Cut-and-come-again harvesting yields multiple crops from single planting
- +Deeply frilled, oak-type leaves add interesting texture beyond just color
- +Maintains sweet, mild flavor even in warm weather conditions
- +All-America Selections winner with proven garden performance across diverse climates
Considerations
- -Red coloration diminishes in heavy shade, reducing ornamental impact
- -More expensive seed cost compared to standard green lettuce varieties
- -Requires consistent moisture to maintain crisp texture and prevent stress
- -Frilled leaves trap soil and debris, requiring more thorough washing
- -Can be slower to establish than smooth-leaf lettuce types in cool conditions
Companion Plants
Plant Together
Chives
Repels aphids and improves lettuce growth and flavor
Carrots
Loose soil from carrot roots helps lettuce root development
Radishes
Fast-growing radishes break up soil and don't compete for space
Marigolds
Repel nematodes and aphids while attracting beneficial insects
Spinach
Similar growing requirements and can be succession planted together
Garlic
Deters aphids, slugs, and other pests that damage lettuce
Nasturtiums
Act as trap crop for aphids and cucumber beetles
Parsley
Attracts beneficial insects and doesn't compete for nutrients
Keep Apart
Broccoli
Competes for similar nutrients and can shade out lettuce
Sunflowers
Allelopathic effects inhibit lettuce germination and growth
Fennel
Inhibits growth of most garden plants through allelopathy
Pests & Disease Resistance
Resistance
Excellent heat tolerance and bolt resistance, moderate disease resistance
Common Pests
Aphids, flea beetles, slugs, leafminers
Diseases
Downy mildew, tipburn, lettuce drop in wet conditions