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Caryopteris ×clandonensis

Scientific Name: Caryopteris ×clandonensis

Family: Verbenaceae

Category: Dicot

Growth: Shrub

Duration: Perennial

Other Names:

       

Caryopteris x clandonensis: Bluebeard, Blue-mist shrub, Blue Spirea

Caryopteris x clandonensis, commonly known as Bluebeard, Blue-mist shrub, or Blue Spirea, is a popular deciduous shrub appreciated for its late-season blooms and aromatic foliage. It's a hybrid, favored for its easy cultivation and attractiveness to pollinators.

Considerations for Pets and Children

  • The text mentions that the plant is aromatic, indicating the presence of volatile oils that could be a potential irritant for sensitive individuals or animals.
  • While generally considered non-toxic, the toothed leaves might cause minor irritation if ingested or handled roughly.

Taxonomy and Nomenclature

  • Scientific Name: Caryopteris x clandonensis
  • Genus: Caryopteris
  • Family: Not explicitly mentioned in the provided text.
  • The nomenclature "Caryopteris clandonensis hort. ex Rehder" is also mentioned.

Distribution and Habitat

  • The text indicates that Caryopteris x clandonensis was an unusual plant in American gardens in the 1960s, implying its introduction and subsequent popularization.
  • It is also used in water-conserving landscapes in the Inland Northwest of the United States.
  • It is popular in parks and gardens in the UK.

Morphological Characteristics and Growth Habits

  • Caryopteris species are described as deciduous shrubs or perennials.
  • Caryopteris x clandonensis 'Heavenly Blue' is a compact, upright shrub reaching about 1 meter in height with arching branches and toothed, grey foliage.
  • Other varieties, such as 'Dark Knight,' form a mound of slightly toothed foliage.
  • The plant typically produces small blue or white flowers in compact axillary clusters in late summer and autumn. Some varieties exhibit deep blue flowers.
  • It is often cut back each spring and treated like a perennial, even though it is a woody shrub.

Ecological Role

  • The plant is described as a wildlife plant, attracting insects and butterflies.
  • It is noted to be a bee food source.

Cultivation

  • Caryopteris x clandonensis is easily grown in average, medium, well-drained soil in full sun.
  • It prefers loose loams and tolerates some drought but is intolerant of wet, poorly-drained soils.
  • The plant benefits from periodic watering.

Quirky Facts

  • The text mentions that many plants sold in the UK under the name Caryopteris x clandonensis may not be identical to the USA original, suggesting potential variations in cultivars or misidentification.
  • The flowers of the Blue Mist spirea (Caryopteris x clandonensis) appear as if a little bit of a clear, blue New Mexico sky floated down to earth.

Varieties and Cultivars

  • 'Heavenly Blue'
  • 'Kew Blue'
  • 'Worcester Gold'
  • 'Dark Knight'
  • 'Sterling Silver'
  • 'Blue Mist'
  • 'White Surprise'
  • 'Blue Empire'
  • 'Arthur Simmonds'
  • 'Elst33' (BLUE EMPIRE)
  • 'Blue Balloon'

Further Information

  • Horticulture Week
  • Floramedia
  • Burncoose Nurseries
  • Jacksons Nurseries
  • Proven Winners
  • Boomkwekerij Elst-Van Bergen Mts.