Green leaf lettuce is a cool-season crop that thrives in temperate climates. It’s commonly cultivated in regions with mild temperatures and consistent moisture, such as the Salinas Valley in California, which is often dubbed the “Salad Bowl of the World.” However, with the right care, green leaf lettuce can be grown in various locations, from backyard gardens to commercial farms across various continents. It’s also a popular choice for indoor and hydroponic growing systems where the outdoor conditions aren’t as accommodating.