The Language of Flowers by Vanessa Diffenbaugh

From Library Journal: "Diffenbaugh's debut novel opens on Victoria Jones's 18th birthday, which coincides with her emancipation from California's foster care system. Abandoned at birth, Victoria has grown up in a string of bad foster homes, except for the one year she spent with Elizabeth, a vineyard owner who taught her the meaning of flowers. Alternating between Victoria's brief time with Elizabeth and her unsteady attempt to face life as an adult with little education and less experience, Diffenbaugh weaves together the two narratives using the Victorian language of flowers that ultimately helps shape Victoria's future as she grapples with a painful decision from her past. Victoria might be her own worst enemy, but her defensiveness and self-doubt as a foster child and her desire to live beyond what she was thought capable of will sway readers toward her favor. Fans of Janet Fitch's White Oleander will enjoy this solid and well-written debut, which is also certain to be a hit with book clubs."