SproutSmart
SproutSmart™ Intelligent Garden Sowing

Red Sails

Family: Asteraceae Leafy Green

Planting Schedule

Provide your location or planting zone to unlock dates and add Red Sails to a garden.

Crisp, ocean-bright leaves unfurl in airy rosettes, with a vivid red sail of color rising over cool green ribs.

Red Sails delivers tender, sweet-leaning crunch and a delicate, ruffled texture that stays pleasantly crisp as temperatures settle. Ideal for fresh salads and vibrant garnishes, it also shines when used to build leafy bowls and quick tosses of flavor-ready greens.

Light: Part SunMaturity: 55 DaysHabit: Rosette

Botanical illustration of Red Sails

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Red Sails Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone Start Indoors Sow / Transplant Harvest
Zone 1a Protected Environment Only
Zone 1b May 4th May 25th Jul 19th – Aug 1st
Zone 2a Apr 27th May 18th Jul 12th – Aug 29th
Zone 2b Apr 17th May 8th Jul 2nd – Aug 25th
Zone 3a Apr 17th May 8th Jul 2nd – Sep 1st
Zone 3b Apr 21st May 12th Jul 6th – Sep 21st
Zone 4a Apr 17th May 8th Jul 2nd – Sep 24th
Zone 4b Apr 15th May 6th Jun 30th – Sep 27th
Zone 5a Apr 10th May 1st Jun 25th – Sep 30th
Zone 5b Apr 6th Apr 27th Jun 21st – Oct 5th
Zone 6a Apr 3rd Apr 24th Jun 18th – Oct 10th
Zone 6b Mar 28th Apr 18th Jun 12th – Oct 16th
Zone 7a Mar 23rd Apr 13th Jun 7th – Oct 20th
Zone 7b Mar 13th Apr 3rd May 28th – Oct 28th
Zone 8a Mar 4th Mar 25th May 19th – Nov 5th
Zone 8b Feb 23rd Mar 16th May 10th – Nov 12th
Zone 9a Feb 6th Feb 27th Apr 23rd – Nov 26th
Zone 9b Jan 12th Feb 2nd Mar 29th – Dec 9th
Zone 10a — Oct 1st Nov 25th – Feb 28th
Zone 10b — Oct 1st Nov 25th – Feb 28th
Zone 11a — Oct 1st Nov 25th – Feb 28th
Zone 11b — Oct 1st Nov 25th – Feb 28th
Zone 12a — Oct 1st Nov 25th – Feb 28th
Zone 12b — Oct 1st Nov 25th – Feb 28th
Zone 13a — Oct 1st Nov 25th – Feb 28th
Zone 13b — Oct 1st Nov 25th – Feb 28th

Crop Details

TraitValue
Days to Maturity55
Sun RequirementsPart SunPartial sun
Growth HabitRosette
Support NeededNone
Planting DepthSurface
Germination Temp (°F)40
Min Soil Temp (°F)40
Min Night Temp (°F)35
Harden Off (days)6

Culinary Notes


Chef's Note

Red Sails has a tender-crisp bite with enough sweetness to stand up to sharp acids without turning watery, which makes it a star in dressed salads. The ruffled texture grabs vinaigrette and stays snappy long enough to eat—no limp regrets.

Best Uses

  • shingle-thin salad bases where the leaves won’t collapse under dressing
  • quick lettuce-and-herb tosses with warm vinaigrette (let it sit 60–90 seconds)
  • leafy cups for crisp fillings—think herby chickpeas or grilled chicken
  • garnish that adds red-and-green crunch to bowls, tacos, and soup toppers

Flavor Profile

sweet-leaning, cool brightness snappy, ocean-crisp crunch lightly peppered, delicate leaf bitterness ruffled, tender texture that holds a fork well

Kitchen Pairings

lemon olive oil balsamic vinegar parmesan grilled chicken avocado

Frequently Asked Questions


What disease or pest most commonly affects Lactuca sativa (red leaf lettuce) like “Red Sails,” and how do I control it?
A frequent problem is downy mildew (often starting as pale yellow patches on leaves with gray-violet growth underneath). Improve airflow and avoid wetting leaves when watering, then remove infected outer leaves; if it spreads, use an appropriate labeled fungicide for lettuce mildew and start rotating to a fresh bed to reduce recurrence.
How often should I water Lactuca sativa during the main growing phase, and what soil moisture level should I keep?
Keep soil consistently evenly moist but not waterlogged, especially from about week 2 until harvest around day 55. In warm spells, this usually means watering lightly enough to prevent the root zone from drying out—aim for the top 1 inch to remain slightly damp; if lettuce leaves look limp by afternoon, increase frequency rather than volume.
How can I tell when Lactuca sativa “Red Sails” is ready to harvest?
Harvest when heads/rosettes are fully formed for the variety and leaves feel crisp and firm rather than floppy, typically around 55 days from sowing. For best flavor, pick in the morning and harvest before the plant bolts—early signs include rapid vertical growth and a tougher, more bitter leaf taste.