Most gardeners know that both loose leaf and head style lettuce plants reach full size then are pulled or cut at the roots to harvest the whole lettuce.
However, did you know growing lettuce lets you prolong the season by harvesting it leaf by leaf or using a technique called cut-and-come-again.
Lettuce is one of the vegetables that you can grow in water. This method works with any type of mature head or leaf lettuce. Most people say it works best with Roman hearts, but you can also try with red leaf, Boston leaf, and radicchio.