Great Lakes 118

Lettuce

75d to harvest

Crisphead perfection with a cool, watery crunch—Great Lakes 118 forms tight, well-filled heads that feel satisfyingly dense in the hand. Expect sweet, clean flavor with a buttery bite and crisp, deeply veined leaves that hold their structure beautifully from garden to table. Ideal for fresh salads and elegant wedge-style presentation, this steady performer is a favorite for gardeners who want reliable heads with a satisfying crunch at harvest.

Crop Dates

Milestone	Date
Start Indoors	Feb 23rd
Last Frost	Mar 23rd
Transplant / Sow Outdoors	Mar 23rd
Harvest Begins	Jun 6th
Harvest Ends	Nov 12th

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	28
Harden Off (days)	6

Recommended Companions

Carrot Delight Carrot

Redwing F1 Onion

French Breakfast 2 Radish

Solar Yellow Carrot

Cabernet Onion

Madras Radish

Frequently Asked Questions

How often should I water lettuce (Lactuca sativa) during the main growing phase?

During active leaf growth, keep the top 1–2 inches of soil evenly moist—usually about 1 inch of water per week, adjusted for heat and rain. Water in the morning and aim at the soil to prevent wet foliage, since lettuce develops problems faster when leaves stay damp. If the plants wilt during the day but recover overnight, increase the frequency slightly rather than soaking less often.

How do I know when Great Lakes 118 lettuce (Lactuca sativa) is ready to harvest?

Harvest around 70–80 days after sowing (about 75 days to maturity) when heads or leaf clusters are firm and well-sized for your spacing. For crisp texture, harvest in the cool part of the day and pick when leaves are fully expanded but before the plant begins bolting (going tall with a flowering stalk). If you can gently squeeze a head/cluster and it feels tight rather than loose, it’s ready.