Woody > Caryopteris > Caryopteris x clandonensis > Caryopteris x clandonensis 'Kew Blue'
Caryopteris x clandonensis
'Kew Blue'
Kew Blue Spiraea
Origin: A selection from the Royal Botanic Gardens, Kew, Great Britain.
Mike's
Opinion
"
Not a true Spiraea, Caryopteris is a marginally hardy shrub best planted en masse and will produce a mass of fine blue blooms in August. In flower it gives the appearance of Spiraea hence the reference to the common name.
Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)
"
| Family |
| Verbenaceae (Lamiaceae) |
| Genus |
| Caryopteris |
| Species |
| x clandonensis |
| Cultivar |
| 'Kew Blue' |
| Category |
| Woody |
| Type |
| Shrub (deciduous) |
| Pronunciation |
| USDA Hardiness Zone |
| 6 - 9 |
| Canadian Hardiness Zone |
| 5a |
| RHS Hardiness Zone |
| H7 - H3 |
| Temperature (°C) |
| (-21)˚ - (-1)˚ |
| Temperature (°F) |
| (-5)˚ - 30˚ |
| Height |
| 75 cm |
| Spread |
| 75 cm |
Photographs
Description and Growing Information
Flowering Period
| General Description |
| A mounded almost herbaceous shrub. Flowers attract humming birds and are ideal for chalk. |
| Landscape |
| Makes a lovely garden shrub, best planted en masse. |
| Cultivation |
| Well drained, loose soil and a sunny location. May experience winter dieback in excessively cold winters. Requires a minor haircut in spring once the new shoots have fully emerged. |
| Shape |
| Mounded. |
| Growth |
| Fast |
| ID Characteristic |
| Blue Flowers in August with silvery grey foliage. |
| Leaf Description |
| Opposite, simple, ovate 2.5-5 cm long, acute, rounded and scented. |
| Flower Description |
| Dark blue and scented, produced on new growth. |
| Colour Description |
| Dull blue-green with silvery underside. |
| Texture Description |
| Medium. |
| Notable Specimens |
| The Gardens of Fanshawe College, London, Ontario, Canada. |
| Propagation |
| Softwood cuttings root easily and should be removed from mist as soon a rooting is sufficient. Can be transplated easily as roots are sparse and stringy. |
top