Late Bloomers von John Nieman

This is a book about second chances. Margot Roberts is a middle-aged widow with a dear daughter an ocean away in London. As the story begins, she has been a successful banker for decades...but feels that it's the same old thing, day after day. Somehow, she decides to take the plunge by taking classes and eventually buying the greenhouse nursery that she loves. Once there, she decides to inspire other late-blooming customers. Eventually, she becomes famous and even finds a new romance.