Romaine lettuce, like other members of the Asteraceae, is a self-pollinator. To harvest seeds, you’ll have to allow the plant to grow into the flowering stage where you can then pick off the ...

Romaine or cos lettuce Grown least often by home gardeners, romaine lettuce requires a longer growing season and many varieties are not heat resistant. They grow upright with elongated heads that ...

Williams spearheading a groundbreaking agricultural experiment cultivating romaine lettuce in microgravity. According to NASA, this innovative research, part of the Plant Habitat-07 project ...