By standard botanical definition, the bomb flower anatomy is identical to the singles, except the center petal segments. While smaller than the larger outer petals they are of the same texture and color density. Ideally, the center segments form a neatly tailored ball or mound, the "bomb". The term bomb is said to have been adopted from "bombe" the name of a molded frozen desert popular after World War I. Initially, the bomb is small as the flower bud first opens and grows dramatically larger as the flower matures. Rarely, a cultivar that has two stage-double anatomy but also forms a neatly tailored bomb is exhibited in this class, notably ‘Madame de Verneville’.

Definitions: Awards; BeeLoved^®; Best Cut^®; Best Fragrant^®; Best Landscaper^®; Bloom Period & Bloom Week; Colors; Flower Form; Height; Summary of Definitions; USDA Zone.

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