Lettuce is a cool-season vegetable. Many varieties exist that can be successfully grown. For more information about growing lettuce, click here.
VARIETIES: Much variation exists in the types of lettuce that can be grown. Most perform well in Utah. Try Great Lakes, Iceberg, Salinas, Summertime, Cimmaron Red Romaine, Esmerelda, Salad Bowl and Black Seeded Simpson. For more suggestions and seed sources, click here.
Soil Preparation: Before planting, control weeds and incorporate organic matter and all-purpose fertilizer. For more information on soil preparation, click here.
- Lettuce can be grown from seed or transplanted.
- When soil temperatures reach 40°, plant seeds 1/4-1/2 inch deep, in rows 12-18 inches apart. Thin seedlings to every 8-12 inches when plants have 3-4 true leaves.
- Transplants should be planted near the frost-free date in your area. For the average last frost date, click here.
Irrigation: Lettuce prefers regular watering, about 1-2 inches per week. Consistency is best for lettuce. For more information on watering, click here.
Fertilization: Apply a nitrogen-based fertilizer 4 weeks after transplanting or thinning. For more information on fertilizing, click here.
Harvest: Lettuce leaves can be harvested at any time. Picking the outer leaves encourages inner leaves’ growth. Heads can be pulled when they reach mature sizes.
COMMON PESTS AND DISEASES: Aphids, slugs and flea beetles are common pests. For information on controlling pests and diseases, click here.