Proper care should be given to these lettuce plants. Here are some vital tips 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°F (6°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.Mature lettuce gets bitter and woody and it will go bad quickly, so check your garden everyday.As time passes, you will want to cut the whole plant from the ground.It’s best to harvest lettuce in the morning before leaves have been exposed to sun.Keep lettuce in the refrigerator for up to 10 days in a loose plastic bag.Its advised to plant first in Polystone Potsas Soil within these kind of pot perches above a base water reservoir where the plant's roots can stretch down out of the soil and into the water for nourishment.