Either type of seed is suitable for home gardeners. As the name suggests, loose-leaf lettuce types have an open, loose form.

How to grow romaine lettuce from seed Transplants of young romaine lettuce ... While romaine lettuces are not the ideal type for growing indoors, loose-leaf varieties can be quickly cultivated ...

For a continuous supply, sow a few seeds every four weeks ... there are many others to try, including loose-leaf types and oak leaf lettuce, radicchio, rocket and endive.