As a flowering companion plant for lettuce, it offers a splash of color amidst the sea of green. Not to mention, its pungent ...

Kent Bradford, left, and Alfred Huo, seen here with a flowering lettuce plant, found that lettuce could be prevented from flowering by increasing the expression of a specific microRNA in the plants.

If the lettuce flowers, it may render the leaves inedible. Read on for tips from horticulturists about how to harvest both loose-leaf and full heads of lettuce. Related: How to Grow Lettuce for ...

THERE has recently come to hand a report 1 on the vernalization of two varieties of lettuce. The plants obtained ... all produced flowering stalks 14–20 days earlier than the control.