Experts say that washing loose-leaf lettuce will not always do the trick.
From the abcnews.go.com
A few loose-leaf lettuce plants will produce a few salads.
From the sfgate.com
This year, our favorite lettuce is a thickly planted, pale green row of a ruffled, loose-leaf type called Green Ice.
From the post-gazette.com
Generally speaking, loose-leaf and romaine lettuce varieties handle cold better than crisphead or butterhead types.
From the sfgate.com
Butterhead or loosehead lettuce form a loose head of iron-rich, buttery leaves that are somewhat crunchier than leaf lettuces.
From the chron.com
A loose leaf variety, red leaf lettuce is delicate, though its ruffled shape makes it pleasing to eat-and its color makes any salad plate more interesting.