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When to Plant Lettuce Seeds
When to Plant Lettuce Seeds. Lettuce is a cool-season crop, meaning it should complete its growing cycle before the hottest part of the summer. The plant also has a tolerance to mild frosts making it one of the earliest seeds planted in most gardens.
Lettuce is a cool-season crop, meaning it should complete its growing cycle before the hottest part of the summer. The plant also has a tolerance to mild frosts making it one of the earliest seeds planted in most gardens.
Planting Leaf Lettuce
Leaf lettuce commonly goes into the garden as soon as the soil can be worked in the spring. Plant seeds in a single traditional row or broadcast the seeds over a wide row about 1 foot wide. Cover the seeds with about 1/4-inch of soil. Even if the garden is hit with a mild frost, warmer than 28 degrees Fahrenheit, leaf lettuce will grow.
Planting Head Lettuce
Head lettuce has a longer growing season and may require starting in a greenhouse or hot house. In these cases, start the plants about six weeks before the planned start of outdoor growing. Another option is to purchase started plants from a nursery.
Temperature Ranges
Lettuce thrives in temperatures between 45 and 65 degrees. Early planting extends the growth period before it gets too warm for lettuce. Plant lettuce in the fall if your area has a long enough period of these types of temperatures for the lettuce to mature to a harvestable state.
Container Gardens
Lettuce grown in pots or containers can be planted even earlier than garden lettuce. While the plant tolerates mild frost, the containers can be brought inside avoiding the stress of cold overnight or extended cold temperatures. Two plants are commonly grown in a 1-gallon pot.
