Romaine Lettuce Plant
What is romaine lettuce? Also known as cos lettuce, botanically speaking, romaine is Lactuca sativa var. longifolia. Instead of growing a round, bulbous head or a loose, leafy one, romaine lettuces grow upright heads with sturdy, elongated leaves that have thick midribs and are densely packed.
60 to 80 days
Reaching up to 20 inches tall, most romaine lettuces take 60 to 80 days to harvest. The extended growing season works because romaine is able to grow without bolting in the warm summers. Growing red romaine lettuce requires the same garden techniques as growing green varieties