The Dawes Arboretum
The Dawes Arboretum
The Dawes Arboretum
Arboretum Explorer
Search
Map
Names
Features
Tours
Taxon
English
Taxon
Caryopteris × clandonensis 'Blue Knoll'
Common name:
Blue Knoll hybrid bluebeard, Blue Knoll blue-spirea
Family:
Lamiaceae (mint family)
Distribution:
hybrid: selection of Caryopteris incana × C. mongholica
Hardiness:
USDA Zone 5
Life form:
Deciduous shrub/Subshrub
Comments:
This cultivar grows 3' high and wide. Bright blue, fragrant flowers bloom from late summer to frost and attract butterflies and hummingbirds. Foliage is a distinctive silvery green. Cut back to live wood in late winter or early spring before new growth begins. Can be used in a mass, low formal hedge or in the shrub border. Plant in loose, well-drained, neutral to slightly alkaline soil.
Locations
1:
AZA: AY15
(AY15)
• Accession: D2000-1003.001 • Provenance: Cultivated of Garden Origin
2:
VCA: AX15
(AX15)
• Accession: D2000-1003.002 • Provenance: Cultivated of Garden Origin
Area
Individual