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| 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 |
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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 -15°F 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.
The information about Caryopteris x clandonensis 'Longwood Blue' displayed on this web page is based on our research conducted in the nursery's horticultural library and from reliable online resources. We also include observations made about it as it grows in our nursery gardens and other gardens we have visited, as well how the crops have performed in containers in our nursery field. We will also incorporate comments we receive from others and welcome hearing from anyone with additional information, particularly if they can share cultural information that would aid others in growing this plant. |
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