Common Name: Caryopteris
Genus: Caryopteris
Species: x clandonensis
Cultivar: 'Heavenly Blue'
Skill Level: Experienced
Exposure: Full sun
Hardiness: Hardy
Soil type: Well-drained/light, Moist
Height: 90cm
Spread: 150cm
Time to take cuttings: April to July
This garden hybrid is a cross between two Chinese species, and is one of the best small shrubs for late colour in the border. It's hardier than often thought and will survive most winters unscathed. Any damage to shoots is removed by hard annual pruning, which keeps plants flowering prolifically and prevents a bare base from developing. The bushes are dome-shaped, with new stems arching gracefully under the weight of the dense, deep blue flower clusters, which stand out well against the soft green foliage. The Royal Horticultural Society has given it its Award of Garden Merit (AGM).
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