Caryopteris Blue Mist Shrub: How To Grow A Blue Mist Shrub

Image by Toby Garden

By Amy Grant

Caryopteris blue mist shrub is a shrub also classified as a “sub shrub” with woody stems that partially die back in the winter, or even entirely all the way to the crown of the plant. A hybrid or cross between Caryopteris x clandonensi, this shrub is non-native to any area and hails from the family Lamiaceae. It may also be found under the names blue mist shrub, bluebeard, and blue spirea. Let’s learn more about how to care for blue mist shrubs.

This airy shrub has aromatic green, silvery green, yellow, or green and white foliage depending upon the cultivar. Caryopteris blue mist shrub’s prized feature, however, is the blue to purple blooms, flowering in late summer all the way up until the first heavy winter frost. The flowers on growing blue mist shrubs are great attractors for pollinators such as butterflies and bees.

How to Grow a Blue Mist Shrub

Blue mist shrub planting can occur in USDA zones 5 through 9 and is deciduous in most regions, although it may remain evergreen in mild climates. This shrub will grow to about 2 to 3 feet high by 2 to 3 across with a moderately fast growth rate.

Other information on how to grow a blue mist shrub advises planting in a sunny exposure in well-draining loose, loamy soil.

Some varieties of Caryopteris blue mist shrub to consider planting in the home landscape are:

  • ‘Longwood Blue’ – sky blue fragrant blooms and is a taller variety at about 4 feet tall
  • ‘Worchester Gold’ – golden foliage that is aromatic if crushed and lavender flowers
  • ‘Dark Knight’ – deep blue blooms on a medium sized plant of 2 to 3 feet

Care for Blue Mist Shrubs

Caring for blue mist shrubs is quite easy as long as the plant gets plenty of sun and is planted in the appropriate zone listed above.

Blue mist shrubs are drought tolerant, hence, requires an average amount of irrigation.

Overly fertilizing will result in a plant that is over blown and disorderly.

Pruning the blue mist shrub of any deadened branches, due to harsh winter and freezing, should be postponed until the plant begins to leaf out in the spring. The entire shrub may be cut back to the ground in the spring and, in fact, enlivens the specimen and fosters a more attractive evenly rounded shape. Flowering occurs on new growth.

Although this little beauty is a pollinator attractor, deer are generally not interested in browsing its leaves and stems.

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