Gwynne's perennial garden is a spectacular sight to see.

Perennials form the backbone of great gardens. Their size alone is rivaled by few fast growing annuals, giving structure and dimension to your garden. They bring color early, before it is safe to plant bedding plants and give your garden character past the first frosts which kill all but the hardiest annuals. They chart the progression of the season as different varieties come into full bloom, lending every garden they grace a dynamicism that is unknown in annual only gardens. In mixed gardens, perennials give the annuals something to play against, color combinations that build, climax and transition with time.

And, best of all, they can be planted throughout the growing season. Now, for instance.