SproutSmart
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Cimmaron

Lettuce

Planting Schedule

Add Cimmaron to your garden to build a schedule and get reminders.
Botanical illustration of Cimmaron
55d to harvest

Cimmaron romaine brings a crisp, cool crunch from the first bite—its leaves unfurl in a dense, upright head with a sweet, fresh flavor and a pleasantly tender bite. Expect a clean, sturdy texture with a satisfying snap, ideal for garden-to-table salads and vibrant fresh preparations. Grow Cimmaron for reliable, midseason harvests around 55 days, when the heads are at their most lush and flavorful.

Crop Dates

Growing note: Zone 1a has only 30 frost-free days — shorter than this crop's 55-day maturity. Outdoor planting is not viable; use protected cultivation.
MilestoneDate
Last FrostJun 15th
Growing ApproachProtected Environment Only

Crop Details

TraitValue
Days to Maturity55
Sun RequirementsFull SunFull sun
Growth HabitRosette
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)35
Harden Off (days)6

Frequently Asked Questions


What pests or diseases commonly hit Lactuca sativa (Cimmaron) and how do I manage them?
Leaf aphids are common on lettuce and can cause curling and stunted growth; rinse them off early and use insecticidal soap if they persist. In humid conditions, lettuce often develops downy mildew—avoid wetting leaves, space plants for airflow, and remove heavily affected leaves immediately to slow spread.
How can I tell when Cimmaron lettuce is ready to harvest?
Harvest when heads/leaf rosettes reach their expected size around 55 days, and leaves feel tender rather than tough. For best texture, pick in the morning and stop as soon as the plant starts to bolt (visible flower stalk), because bitterness increases once it shifts to flowering.
Botanical illustration of Cimmaron

Cimmaron romaine brings a crisp, cool crunch from the first bite—its leaves unfurl in a dense, upright head with a sweet, fresh flavor and a pleasantly tender bite. Expect a clean, sturdy texture with a satisfying snap, ideal for garden-to-table salads and vibrant fresh preparations. Grow Cimmaron for reliable, midseason harvests around 55 days, when the heads are at their most lush and flavorful.