Every gardener wants to create breathtaking designs with color, form, and texture. But perennial combinations present challenges: How do I know all plants will bloom at the same time? How do I pick plants that have interest in each season? Most perplexing -- which plants look good together in the first place? Perennial Companions takes away the guesswork by providing Tom Fischer's 100 proven picks. New gardeners will learn how to create simple pairings...