Plant Identification Learning Module:
Vegetables
Lettuce (Lactuca sativa)
Lettuce plants grow as a loose or firm rosette of leaves. As the plant matures, the leaves increase in number.
Crisphead (Iceberg)—Large firm and round heads are surrounded by broad green overlapping wrapper leaves attached at the bottom.
Leaf—Heads are loosely formed with leaves varying greatly in color (red, bronze, yellow, green), size and shape (wavy, notched or frilled).
Butterhead—Heads are soft, velvety smooth, surrounded by green wrapper leaves.
Romaine (Cos)—Leaves with prominent central ribs are gathered in a loose fashion to form an upright head similar to Chinese cabbage.
Lettuce seeds are small, tapered at each end and may be straw or black in color.
