Planning a successful perennial garden in Colorado, the Rocky Mountains, and High Plains comes with its share of soil and climate challenges. Best Perennials for the Rocky Mountains and High Plains is a comprehensive guide to the best-performing perennials based on performance results from Colorado State University's W. D. Holley Plant Environmental Research Center (PERC). The 322 plants described in this publication were rated according to landscape use, height, width, foliage color and fall effect, winter injury, ornamental fruit, disease and insect problems. These top-performing perennials are ideal for xeriscapes, rock gardens, wildflower gardens, and the traditional perennial border. Plants that attract bees, butterflies, and hummingbirds are also featured. This book is a necessary tool for the horticulture industry, landscape architects and designers, park personnel, the home gardener, and horticulturists in the Rocky Mountain--High Plains region.