SproutSmart
SproutSmart Intelligent Garden Sowing

Optima

Family: Asteraceae Leafy Green

Planting Schedule

Add Optima to your garden to build a schedule and get reminders.

Sink your spoon into Optima’s tender heart: buttery, spoon-soft leaves unfurl in a calm, pale-green rosette with a delicately sweet, clean flavor.

At maturity (about 60 days), it forms a compact butterhead with a plush, velvety texture and crisp yet yielding bite—ideal for fresh salads and elegant platters, as well as quick tosses and light dressings that let its mild character shine.

Light: Part SunMaturity: 60 DaysHabit: Rosette

Botanical illustration of Optima

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

MilestoneDate
Start IndoorsMar 28th
Last FrostApr 25th
Transplant / Sow OutdoorsApr 18th
Harvest BeginsJun 17th
Harvest EndsOct 16th

Crop Details

TraitValue
Days to Maturity60
Sun RequirementsPart SunPartial sun
Growth HabitRosette
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)32
Harden Off (days)6

Culinary Notes


Chef's Note

Optima’s butterhead soul is all about delicate sweetness and that plush, spoonable bite—dress it lightly so it stays crisp-yielding instead of turning watery. Choose bright acid (lemon/vinaigrettes) and creamy or salty partners to make its mild flavor snap on the palate.

Best Uses

  • cool, simple butterhead salads where the dressing coats rather than drowns the leaves
  • light tosses with a restrained vinaigrette or yogurt herb dressing
  • plated lettuce cups for crudo-style toppings (fish, citrusy prawns, or soft cheeses)
  • quick wilt-in minutes stir-ins to keep the leaves tender, not cooked to mush

Flavor Profile

buttery, spoon-soft leaf tenderness delicately sweet, clean sweetness crisp-yet-yielding bite that turns plush

Kitchen Pairings

lemon olive oil aged Parmesan grilled shrimp herb yogurt (dill or chive) crème fraîche

Frequently Asked Questions


Lactuca sativa (lettuce) pest/disease: what if I see slimy spots or gray mold on leaves?
This can be gray mold (Botrytis), which shows up as gray, fuzzy growth on leaf tissue—often after overhead watering or during cool, humid weather. Remove affected leaves immediately, improve airflow around plants, and water the soil (not the leaves). If it keeps spreading, apply a label-approved fungicide for lettuce and rotate to a different mode of action next time.
How often should I water Lactuca sativa during the main growing phase (around weeks 3–8)?
Keep the soil evenly moist but not waterlogged so leaves stay tender and don’t turn bitter—aim for roughly 1 inch of water per week, split into smaller waterings as needed. Water when the top 1 inch of soil starts to dry, and ensure good drainage because lettuce suffers when roots sit in soggy conditions.
How can I tell when Lactuca sativa is ready to harvest at about 60 days?
Harvest when heads (or leaf rosettes, if you’re growing loose-leaf types) reach their expected size and leaves feel crisp rather than limp. For the best flavor, pick in the morning when leaves are fully turgid, and avoid waiting until the plant bolts—once it starts sending up a flower stalk, bitterness increases quickly.