Choosing exactly which perennials to grow out of the thousands that are available can be a real challenge. For easy reference, this species chart offers some of the most important information for over 50 of the most popular perennials. The chart covers bloom season, flower color, sun or shade requirements, and vital statistics such as hardiness zone and maximum height. Use the chart to identify perennials that fit your needs and your growing conditions.

Bloom Season — These are the approximate bloom times of many favorite perennials. If you want to extend the blooming season, look for cultivars that bloom extra early or late — they can stretch the normal limits shown here. The weather will also influence season of bloom; warmth will bring flowering on faster and coolness will encourage the flowers to stay open longer.

Flower Color — Most perennials come in a large range of flower colors. For convenience, we have indicated which species have flowers of white and cream, gold and yellow, orange, blue, purple, pink, or red. In the garden, colors may vary widely depending on the cultivar and the growing conditions. If you want a specific color, try to see the plant in bloom before you buy.

Exposure — You can choose from dozens of perennials that grow in full sun or shade. Some also take conditions that are in between both extremes. The information in the chart will help you to begin selecting the right plant for the right place.

Vital Statistics — A number of perennials can grown in warm and cool climates. As their growing conditions vary — and you can choose cultivars bred to grow taller or shorter — their height will differ. This chart shows hardiness zones and average height.