Taxon

Caryopteris × clandonensis 'Blue Knoll'

Caryopteris × clandonensis 'Blue Knoll' - Blue Knoll hybrid bluebeard, Blue Knoll blue-spirea
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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
Cluster Area Area
Individual Individual