Type
crisphead
Lettuce variety
Great Lakes 118 Lettuce
A traditional iceberg-type lettuce that forms dense heads under cool growing conditions. It needs more time and careful timing than leaf lettuce.
Days to maturity
70 to 80
Best for
firm heads, cool-season growing
About Great Lakes 118
Great Lakes 118 is a classic iceberg-type crisphead with broad outer leaves and a firm, crunchy center. It is more substantial and slower to head than leaf lettuce, but it rewards patience with classic crisp texture.
Growing Great Lakes 118 Lettuce
This variety needs cool conditions and enough time to form a solid head, so it is usually better in spring or fall than in hot midsummer gardens. Keep moisture even to prevent bitterness and split heads, and harvest when the head feels firm with a gentle squeeze.
Full growing guide
For planting dates, care, and harvest that apply to all lettuce, see the complete guide.
How to grow LettuceOther lettuce varieties
Variety characteristics are general guidance for US home gardens; performance varies by climate, soil, and season. Seed and plant availability differs by supplier. Page updated Aug 4, 2026.