Blossom as a baby name is not a new idea - many will recall the TV show "Blossom" that ran from 1990 - 1995, with main character Blossom Russo and her best friend Six (Six created some buzz when it was recently used in the movie "Syrup," and in name evolution, Seven is now trendy). As sticky-sweet or silly as Blossom might seem to some, she fits right in with popular Lily, is as ordinary as Fern, and stands out just as much as Petal. For those still unwilling to consider Blossom, German Bluma might seem more substantial.
Blossom is an Old English word that ultimately came from a Germanic word taken from Proto-Indo-European, about as far back as it gets. As a name, Blossom was always rare in both the U.S. and U.K., but it gained a little momentum in the 1920's, making it onto the bottom of the SSA chart. It likely started as a pet name for young girls. Surprisingly, the 90's TV show didn't make a dent, nor did the character from the "Powderpuff Girls" animated show and an appearance on "Dawson's Creek." In 2013 Blossom ranked at #430 in England and Wales, though it is unclear why.
Other Blossom's in history include Edith Marie Blossom Macdonald from "The Addams Family," known as Blossom Rock; jazz singer Blossom Dearie; vaudeville performer Blossom Seeley; novelist Clare "Blossom" Elfman; Blossom Nnodim, born Ozurumba Roseblossom Ogechi, from Nigeria.