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SproutSmart Intelligent Garden Sowing

Rouge d'Hiver

Lettuce
Botanical illustration of Rouge d'Hiver
🌱 55d to harvest Rosette

Velvety leaves unfurl in a cool-weather crescendo—Rouge d’Hiver brings a rich, wine-rose blush over crisp, tender green, with a s…

Planting Schedule

Add Rouge d'Hiver to your garden to build a schedule and get reminders.

Crop Dates

MilestoneDate
Start IndoorsDec 4th
Last FrostJan 1st
Transplant / Sow OutdoorsJan 1st
Harvest BeginsFeb 25th
Harvest Ends

Crop Details

TraitValue
Days to Maturity55
Sun RequirementsPart SunPartial sun
Growth HabitRosette
Support NeededNone
Planting DepthSurface
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)30
Harden Off (days)5

Frequently Asked Questions


What pest or disease most commonly affects Lactuca sativa (Rouge d’Hiver), and how do I treat it?
Watch for powdery mildew and aphids on lettuce, especially in humid weather or where leaves stay wet. Remove badly infected leaves early, improve airflow, and water at soil level; for aphids, blast plants with a strong jet of water and apply insecticidal soap if needed. If mildew keeps spreading, stop overhead watering and thin crowded plants so foliage dries faster.
How often should I water Lactuca sativa during the main growing phase, and what soil moisture target should I aim for?
During the 4–6 weeks of active leaf growth, keep the soil evenly moist but never waterlogged—about 1 inch (2.5 cm) of water per week total, split into 1–2 waterings as needed. Aim for consistently damp soil under the surface (not soggy) so leaves grow tender rather than bitter or stressed. Mulch can help stabilize moisture, but still check that the top few centimeters dry only slightly between waterings.
How can I tell when Rouge d’Hiver lettuce (Lactuca sativa) is ready to harvest?
Harvest when heads are full and firm for leaf/romaine-type lettuce or when outer leaves are large enough to pick—typically around 55 days after sowing. Use the “outer-leaf” method for continuing harvest: pick the largest outer leaves when they reach a good size and color, leaving the center to keep producing. For best flavor, harvest in the morning before midday heat makes lettuce turn more bitter.
Botanical illustration of Rouge d'Hiver

Velvety leaves unfurl in a cool-weather crescendo—Rouge d’Hiver brings a rich, wine-rose blush over crisp, tender green, with a softly sweet bite that feels fresh and clean. The loose-leaf habit forms an airy rosette of finely textured foliage, offering a satisfying crunch that stays pleasantly crisp as it matures in about 55 days. Ideal for fresh salads and bright garnishes, Rouge d’Hiver also shines when wilted into quick, flavorful greens and stirred into hearty seasonal bowls.

Sowing Tips

Transplant Conditions

Wait until soil reaches 40°F and nights stay above 30°F before moving outdoors. Harden off for 5 days first.

Expert Note

For Rouge d’Hiver, aim to transplant into cool fall/late-season weather so the bronze leaves deepen to red as temperatures drop.