books by subject
Perennial Gardening

RHS Practical Guide: Hardy Perennials (RHS Practicals)

The Mixed Border (Wisley)

Planting with Perennials: How to Create a Beautiful Garden with Versatile Perennials (Gardening Essentials S.)

Down to Earth: Gardening Wisdom

Perennials: Designing, Choosing, and Maintaining Easy-care Plantings

How to Plant and Grow Perennials

The Dry Garden

Irises (Royal Horticultural Society Wisley Handbook)

RHS How To Garden When You're New To Gardening: The Basics For Absolute Beginners

Perennials (Gardener's Guide)

Perennials : (Aura Garden Guides :)
