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Products > Caryopteris x clandonensis 'Longwood Blue'
Caryopteris x clandonensis 'Longwood Blue' - Bluebeard

Note: This plant is not currently for sale. This is an archive page preserved for informational use.  

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Habit and Cultural Information
Category: Perennial
Family: Verbenaceae (Vervains)
Origin: Garden Origin
Flower Color: Blue
Bloomtime: Summer
Parentage: (C. incana x C. mongholica)
Height: 2-3 feet
Width: 2-3 feet
Exposure: Sun or Shade
Deer Tolerant: Yes
Irrigation (H2O Info): Medium Water Needs
Winter Hardiness: < 0 F
Caryopteris x clandonensis 'Longwood Blue' (Bluebeard) - A soft-wooded deciduous shrub that typically grows to 2-3 feet tall and slightly wider but can reach up to 4 feet tall in optimum conditions. Amongst the narrow silvery-gray leaves are produced violet-blue flowers in terminal and axillary clusters from mid to late summer. The foliage is lightly aromatic and the flowers are attractive to bees and butterflies. Plant in full sun to part shade in well-drained soil with moderate to occasional irrigation. It is hardy to around -15F and will freeze back to the ground and then rejuvenate in the warmer months in colder climates. Since flowers form on new wood, cutting it back to within 4 to 6 inches of the ground after the danger of last frost is recommended to keep the plant tidy. A nice showy dry growing plant that is attractive to bees, butterflies and other pollinating insects. This plant is the result of a cross between 2 species, Caryopteris incana and C. mongholica, both species native to Asia (Mongolia, China, Korea, and Japan). The first cross between these species was a chance garden hybrid that occurred in England in the 1930's but this selection, made for its large upright growth, prolific sky blue flowers and silvery-gray foliage, originated at Longwood Gardens in Kennett Square, Pennsylvania. It received the Missouri Botanical Garden 1999 Plant of Merit designation. Other common names for this plant are Blue Spirea, Blue Mist Shrub and Blue Mist Spirea. We grew this plant from 1994 until 2015.  This description is based on our research and observations made of this plant as it grows in our nursery, in the nursery garden and in other gardens that we have visited. We will also incorporate comments received from others and always appreciate getting feedback of any kind from those who have some additional information about this plant, in particular if this information is contrary to what we have written or if they have additional cultural tips that would aid others in growing Caryopteris 'Longwood Blue'.