You should be able to sow additional seeds every two weeks for a continuous harvest throughout the growing season
Fertilize 3 weeks after transplanting
Lettuce prefers soil that is high in humus, with plenty of compost and a steady supply of nitrogen to keep if growing fast
Use organic alfalfa meal or a slow-release fertilizer
To plant a fall crop, create cool soil in August by moistening the ground and covering it with a bale of straw
A week later, the soil under the bale will be about 10 degrees F (6 degrees C) cooler than the rest of the garden
Sow a three foot row of lettuce seeds every couple of weeks just rotate the straw bale around the garden
Make sure soil remains moist but is well-drained
An organic mulch will help conserve moisture, suppress weeds, and keep soil temperatures cool throughout the warmer months
Lettuce will tell you when it needs water
Just look at it
If the leaves are wilting, sprinkle them anytime even in the heat of the day to cool them off and slow down the transpiration rate
Weed by hand if necessary, but be careful of plant roots: They are shallow
Planning your garden so that lettuce will be in the shade of taller plants, such as tomatoes or sweet corn, in the heat of the summer, may reduce bolting
Lettuce Care
Before you plant your lettuce seeds, make sure the soil is prepared
It should be loose and drain well so it is moist without staying soggy
To keep the soil fertile, feed it with organic matter about one week before you seed or transplant
Since the seed is so small, a well-tilled seedbed is essential
Large clods will reduce germination
Direct sowing is recommended as soon as the ground can be worked
Plant seeds ½ inch deep
Snow won’t hurt them, but a desiccating cold wind will
If you want an earlier crop, however, you may start seeds indoors 4 to 6 weeks before last spring frost date for an earlier crop
Harden off seedlings for about one week, and transplant outside between 2 weeks before and 2 weeks after last spring frost
Seed may be sown in single rows or broadcast for wide row planting
When broadcasting, you need to do thinning for the proper spacing
Growing and caring tips for lettuce:
Lettuce Care