Lettuce is a cool-season crop so they flourish well during spring and fall. Lettuce seeds are easily sown directly into the soil as soon as the ground soil can be worked on. It may please you to know that lettuce grows rapidly and it can take only a month from seed planting for baby greens to be harvested.
You can start your lettuce seeds either indoors and then transplant or sow them directly in the garden. How deep to sow your lettuce seeds should be 5mm (1/4”). Or you can plant them where there will be all-around moisture in the soil which is the topmost layer of the soil.