Valmaine

Lettuce

70d to harvest

Crisp, cool crunch begins at first bite—Valmaine romaine forms tight, upright heads with a refreshing, gently sweet leaf flavor and a clean, succulent texture. The leaves stay tender and pleasantly resilient, making them ideal for fresh salads and bright, leafy platters where you want body without bitterness. Grow Valmaine for a dependable 70-day rhythm and a garden-to-table harvest that looks as good as it tastes.

Crop Dates

Growing note: In frost-free Zone 13a, grow this cool-season crop during the cooler dry season (October–February).

Milestone	Date
Start Indoors	—
Climate	Frost-Free Climate
Transplant / Sow Outdoors	Oct 1st
Harvest Begins	Dec 10th
Harvest Ends	Feb 28th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	32
Harden Off (days)	5

Frequently Asked Questions

What pests or diseases commonly hit Lactuca sativa (lettuce), and how can I treat them at home?

Watch for aphids and slugs/snails, especially in warm, humid weather—aphids cluster on new growth, while slugs leave irregular holes with silvery trails. For aphids, rinse plants with a strong water jet and remove heavily infested leaves; repeat every 1–2 days until controlled. For slugs, hand-pick at dusk and use a copper barrier or bait placed away from pets; keep the bed free of debris that shelters them. Keep airflow up and avoid wetting leaves to reduce downy mildew risk (a common lettuce disease that shows as yellow patches on top with gray/purple growth underneath).

How often should I water Lactuca sativa during peak growth, and what soil moisture level is best?

During the main growing phase, keep the soil consistently evenly moist—aim for dampness throughout the top 2–3 inches rather than letting it dry out then soak. Water about 2–3 times per week in part-sun gardens, increasing to more frequent light watering during heat or windy spells to prevent leaf edge browning and bitterness. Mulch lightly after seedlings establish to stabilize moisture without waterlogging the shallow lettuce roots.

How do I tell when Valmaine lettuce (Lactuca sativa) is ready to harvest?

Harvest when heads/rosettes reach their expected size for your spacing and the outer leaves are fully expanded with crisp texture. For leaf lettuce types, start picking outer leaves once they’re large enough to use and still tender, usually around 60–70 days from sowing; avoid waiting until the plant bolts. If you see a central flower stalk forming or leaves turn very bitter, harvest immediately to prevent further quality loss.