Bulbs, underground organs with resting buds located on a reduced stem surrounded by layers of leaves and/or scales, have evolved at least eight independent times within the monocots. Iconic monocotyledonous bulbous taxa include tulips, hyacinths and onions, and less commonly known examples include the bulbous bluegrass, Poa bulbosa. Although similar in appearance and therefore, thought to be common structures, there exists a diversity of bulb scale morphology that is hidden underground. Bulbs can be comprised of leaf bases, swollen scales, swollen leaf bases, or both leaf bases and scales. Additionally, there exist tunicate bulbs, which are those with a paper-like outer covering (tunic) that protects from drying or injury (e.g., onions, tulips), and imbricate bulbs, which are those without an outer covering (e.g., lilies). The multiple independent origins of this trait provide researchers with an excellent opportunity to study the evolutionary and developmental processes that have promoted the evolution of these seemingly similar, yet morphologically diverse, belowground structures. Are they all the same? We’ll find out.