To dream of lettuce growing suggests that you will experience self-actualization and euphoria.

To dream of eating lettuce means that envy will play a major role in disrupting your relationship with a friend or partner.

To dream that you are planting lettuce foretells that you will be responsible for causing your early death due to an illness.

To dream that you are buying a head of lettuce means that you will go through hardships because of the decisions you have made.