Introduction
Lettuce Crisphead Great Lakes 118 (Lactuca sativa) is a classic iceberg-type lettuce with large, firm, crisp heads and excellent heat tolerance for a crisphead variety. It is a moderate cool-season crop that grows well in Florida's fall and spring seasons.
Growing conditions
- Light: Full sun to partial shade, 4 to 6 hours daily.
- Water: Moderate; keep soil evenly moist, water at base.
- Soil: Rich, well-draining soil with good organic matter.
- Fertilizer: Light balanced fertilizer monthly.
- Season: Cool-season crop; best in fall and spring in Florida.
Planting tips
Start seeds indoors or direct sow in cool weather. Space plants 12 inches apart. Crisphead lettuce requires a longer growing season than leaf types. Harvest heads when firm and dense. Great Lakes 118 has better heat tolerance than standard iceberg varieties, making it a good choice for Florida.
Troubleshooting
Loose or no head formation
Heat or insufficient nutrients. Plant in cool seasons and feed regularly.
Bolting
Heat causes premature flowering. Plant in cool seasons and provide afternoon shade.
Pests
Aphids and slugs. Treat with organic insecticidal soap and remove slugs by hand.
Pet safety
Lettuce Crisphead Great Lakes 118 is non-toxic to pets.
Quick care summary
Difficulty: Moderate. Light: Full sun to partial shade, 4 to 6 hours daily. Watering: Moderate, keep evenly moist. Humidity: Moderate, 40% to 60%. Pet safety: Non-toxic.
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