Growing cycles in intervals?
I have read a post which said that it is ideal to plant short, medium and long term crops for optimum gains. Supposing I'm to plant just one crop, such as lettuce and sell them to restaurants in my area. What happens after my first harvest/growing cycle, won't I have any lettuce to supply them with? I presume I wouldn't meet their daily needs if this is the case. Or should I grow in intervals, meaning by the time I'm harvesting one batch, another batch will have been about half of the way to maturity? I am new to this and would appreciate any advice. Thanks.