Clerodendrum smithianum (Light Bulb Plant, Chains of Glory)
Botanical Information
| Family | Lamiaceae |
| Genus | Clerodendrum |
| Species | smithianum |
| Category | Tropicals, Woody |
| Type | Shrub (evergreen) |
| Origin | Native to Thailand. |
Details
| USDA Hardiness Zone | 10-11 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | Requires cool season protection under glass. |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H1c-H3 |
| RHS Hardiness Ref. | |
| Temperature (°C) | -1.1-10 |
| Temperature (°F) | 30-50 |
| Height | 1 m |
| Growth | Fast |
| Flowering Period | January, February, March |
Description and Growing Information
| ID Characteristic | The common name comes from the 'light bulb' shape of the flower before full bloom. |
| Landscape | Hanging basket or container. |
| Propagation | Propagated from semi-hardwood cuttings. |
| Cultivation | Full sun to filtered sun and well drained but moist, rich organic mix. Light Bulb Plants will not tolerate wet, mucky or dry, sandy soils. |
| Notable Specimens | Harry P. Leu Gardens, Orlando, Florida, United States of America. |
| Flower/Leaf Bud Description | Buds are dark purple-red and once the flower emerges the white petals are shaped like a light bulb prior to full bloom. |
| Leaf Description | Dark green, oblong and 12-15 cm long with a rough texture. |
| Flower Description | 5-petaled white flowers that are very fragrant. They grow 20-45 cm across and are pendulous flowers. |
| Fruit Description | The round fruit are black when ripe and 1 cm in diameter. |
Photographs
Clerodendrum smithianum, form. Harry P. Leu Gardens, Orlando, Florida, United States of America.
Clerodendrum smithianum, leaf. Harry P. Leu Gardens, Orlando, Florida, United States of America.
Clerodendrum smithianum, flower. Harry P. Leu Gardens, Orlando, Florida, United States of America.
Clerodendrum smithianum, flower. Harry P. Leu Gardens, Orlando, Florida, United States of America.