Lollo Rosso lettuce is small to medium in size, averaging 15-20 centimeters in diameter, and grows in a tightly compact, rosette shape. The frilly and curled, fan-shaped leaves are light green in the center and transition to a deep red-maroon around the edges. Connected at a central base, the leaves do not form a head and are made up of single branches. Lollo Rosso lettuce is tender, crisp, and chewy with a sweet, slightly bitter, and nutty flavor.