Perennials are the backbone of the garden — a low-maintenance, long-growing mainstay that the garden revolves around. I've worked with perennials for 20 years, as a manager in the perennials section at the local nursery, and then as a municipal horticulturist in charge of over 20 gardens around the city. I've grown perennials from seed, potted them bare-rooted, divided them, deadheaded them, treated them for diseases and pests. Everything I've learned over the years I share here in this book — Perennial Classics.