Oakleaf

Lettuce

50d to harvest

Tender leaves unfurl like ruffled lace, with a crisp snap and a sweet, green-forward flavor that feels cool and clean from the first harvest. Oakleaf forms loose rosettes of oak-shaped foliage—deeply lobed, richly textured, and wonderfully steady in the garden—ideal for fresh, vibrant salads and quick tosses, as well as blending into leafy mixes and silky sauces.

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	Nov 20th
Harvest Ends	Feb 28th

Crop Details

Trait	Value
Days to Maturity	50
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	40
Min Soil Temp (°F)	40
Min Night Temp (°F)	35
Harden Off (days)	5

Frequently Asked Questions

What’s a common problem for Lactuca sativa (oakleaf lettuce), and how do I treat it?

A frequent issue is powdery mildew, which shows up as a white, dusty coating on leaves and spreads in cool, humid conditions. Improve airflow by spacing plants and watering at soil level (not on leaves), then remove heavily infected leaves. If it keeps recurring, spray an approved fungicide labeled for leafy greens and follow the label reapplication interval.

How often should I water oakleaf lettuce during the main growing phase?

Keep the top 1–2 inches of soil evenly moist from emergence through harvest; lettuce roots dry out quickly and stress can trigger bitterness and bolting. In warm part-sun conditions, this usually means watering about 2–4 times per week, with deeper soakings so moisture reaches the root zone. Water in the morning and avoid waterlogged soil, since overly wet beds can encourage fungal leaf diseases.

How can I tell when oakleaf lettuce (Lactuca sativa) is ready to harvest?

Harvest when heads/rosettes are well-formed for their size—typically around 50 days from sowing—and leaves are large enough for your preference without being overly mature. For leaf harvest, pick the outer leaves when they reach usable size and leave the center growing point intact. For whole-plant harvest, cut at the base when the plant has reached full, crisp leaf mass and before it starts to bolt (stems stretching upward).