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Caryopteris × clandonensis 'Dark Knight' (blue mist shrub, bluebeard)

Caryopteris × clandonensis 'Dark Knight'

blue mist shrub, bluebeard

Blue mist shrub is aptly named as its gray-green foliage is shrouded in a cloud of blue from mid to late summer. It is a well-behaved garden plant that is very attractive to butterflies. 'Dark Knight' has deep purple blue flowers closely spaced on long stems.

SIZE
Caryopteris 'Dark Knight' LP32 - 32 per flat Availability
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Height

2-3 Feet

Spread

2-3 Feet

Spacing

24 Inches

Bloom Color

Violet

USDA Hardiness Zone 5-9

blue mist shrub, bluebeard Interesting Notes

Caryopteris × clandonensis ‘Dark Knight’ is a wonderful late season pollinator plant – luring bees and butterflies from miles around and providing nectar from August to October. Well-behaved and growing 2’-3’ tall and 2’-3’ wide, blue mist shrub earns its name from its gray-green foliage shrouded in a cloud of blue flowers when it blooms. The flowers are beautiful and long-lasting for cut flower arrangements and the spent blooms and foliage are just as lovely for filler. ‘Dark Knight’ is notable for its profuse deep purple blue flowers closely spaced on long stems.


Caryopteris × clandonensis is a hybrid between two Asiatic species of C. incana and C. mongholica, originating from the Himalayas and East Asia. An easy to grow plant that prefers full sun in average, well-draining soil, Caryopteris can tolerate periods of drought and may experience crown rot if allowed to sit in water-logged soil. In colder zones, bluebeard should be given a hard prune in late spring as tips will experience winter dieback. Blooms occur on new wood and hard pruning doesn’t affect bud set. Considered a subshrub with herbaceous stems coming from woody center, roots are hardy to zone 5 while branches are hardy to zone 7.


We love Caryopteris because of its performance in leaner, drier soils and are happy to use them en masse in the garden for late season impact or in a container as a formal statement piece. ‘Dark Knight’ has deep colored blossoms and it’s a joy watching all the pollinator activity late in the season. It is extremely resistant to herbivory by deer and rabbits due to its fragrant foliage. 

Caryopteris × clandonensis 'Dark Knight' Growing and Maintenance Tips

Caryopteris needs full sun and a light, well-drained soil. Avoid heavy, wet, clay-type soils. It flowers on new growth, so prune in early spring to ensure heavy flowering. It is somewhat tolerant of drought, but will not survive in saturated soils. Propagate by softwood terminal cuttings. Best used as a specimen, in foundation plantings or in perennial borders for late season color. Tolerates a little shade.

Good Substitutions

blue mist shrub, bluebeard Caryopteris × clandonensis 'Dark Knight'
lavender Lavandula × intermedia Sensational! 'Tesseract'
blue mist shrub, bluebeard Caryopteris × clandonensis
Blue mist shrub Caryopteris × clandonensis 'Inoveris'

Key Characteristics & Attributes

Full Sun
Full Sun
Part Sun
Part Sun
Pollinator-friendly
Pollinator-friendly
Deer Resistant
Deer Resistant
Cut Flower
Cut Flower
Drought Tolerant
Drought Tolerant
Summer
Summer

Additional Information

Soil Moisture Needs
Average
Plug Type
Landscape Plug™
Attributes
Ornamental Foliage
Season of Interest (Flowering)
Late Summer
Propagation Type
Vegetative