Learn which plants thrive in your Hardiness Zone with our new interactive map!

List of Blue Bushes With Flowers

By Sommer Leigh ; Updated September 21, 2017
Growing blue bushes adds a sense of serenity to your garden
bee on blue flower image by Jane from Fotolia.com

Blue flowers add a touch of serenity to any garden. When mixed with other flower colors, they provide more color variety to your landscape. Certain types of bushes are often available in blue varieties ranging from light blue, dark blue and shades of purple and blue. Choose one of these blue flowering bushes to add to your garden this year.

Blue beard

Blue beard (Caryopteris x clandonensis) is also often known as blue spirea. The plants are hardy, surviving hot and humid summer conditions, while still blooming beautifully. Blue beard is sun loving and grows fast, growing up to three feet tall. They typically live for five years. Blue flowers appear on the plant from mid- to late summer. This plant is hardy in USDA zones 5 to 9.


The hydrangea bush (Hydrangea macrophylla) is available in a range of colors, including blue varieties. The shrub is compact and bears large, round flowers throughout the summer. Varieties are available in a full spectrum of blue shades. Hydrangeas grow best in full sun to partial shade and will reach heights of 6 feet high. This plant is hardy in USDA zones 5 to 9.

Blue Bird Rose of Sharon

Blue Bird Rose of Sharon (Hibiscus syriacus) grows upright to a height of 10 feet and produces 3-inch, funnel-shaped blue flowers with red centers; flowers blossom from late summer into the fall. Rose of Sharon prefers full shade, but will do fine in partial shade. This plant is hardy in USDA zones 5 to 9.

Russian Sage

This border plant grows to only 3 feet high, producing lavender-blue tubular flowers from late summer into fall. Its gray-green leaves are small. Russian Sage (Perovskia artriplicifolia) prefers full sun and requires little water. The plant becomes dormant during the winter months and is hardy in USDA zones 6 to 9.


About the Author


Sommer Leigh has produced home, garden, family and health content since 1997 for such nationally known publications as "Better Homes and Gardens," "Ladies' Home Journal," "Midwest Living," "Healthy Kids" and "American Baby." Leigh also owns a Web-consulting business and writes for several Internet publications. She has a Bachelor of Science in information technology and Web management from the University of Phoenix.