Ceanothus (California Lilacs) are compact, fast-growing, drought-tolerant shrubs that produce an abudance of beautiful blue flowers. Ceanothus subgenus Ceanothus consists of evergreen or deciduous species with thin scale-like stipules, alternate leaves, branchlets that may be thorn-tipped, and inflorescences that are generally raceme -like to panicle -like, or occasionally umbel -like. Ceanothus, commonly known as California lilac, is a genus of about 50–60 species of nitrogen-fixing shrubs or small trees native to North America, mostly California.

Understanding the Context

Ceanothus are perennial woody shrubs, small trees, or ground cover plants grown both for the foliage and blossoms. Most species are evergreen, though some are deciduous. The plants produce dense clusters of small flowers in shades of white, cream, gray, or various hues of blue and purple. Find out how to grow ceanothus, including choosing, watering, pruning, training and propagating.

Key Insights

Growing Ceanothus, commonly known as California Lilac, adds vibrant colors and delightful scents to any garden. These evergreen shrubs are renowned for their clusters of blue flowers and can be an excellent choice for gardeners seeking drought-resistant plants. California Lilacs, or Ceanothus, are some of our most fragrant and colorful shrubs here in California. They are also evergreen and very drought tolerant. The myth of Ceanothus being short-lived is primarily spread by incompetent gardeners that insist on drip irrigation, summer water and soil amendments.

Final Thoughts

Ceanothus wild lilac for blue flowers that attract bees, and evergreen leaves, for spring planting in containers and gardens in Portland, Vancouver, Lake Oswego.