There’s a reason why lettuce is one of the most popular hydroponic crops for beginners and experts. The crisp, leafy green is easy to grow hydroponically, plus it's super versatile in the kitchen.

This heirloom variety dates back to 1875 and is beloved for its large, lightly crumpled, lime green leaves. Black Seeded Simpson lettuce forms wide, open heads making it easy to pick individual leaves ...