Ceratostigma willmottianum
Leadwort
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Leadwort (Ceratostigma willmottianum) - Description
Ceratostigma willmottianum is a species of flowering plant in the family Plumbaginaceae that is native to western China and Tibet. It is an ornamental deciduous shrub that grows to 1 metre in height, with pale blue plumbago-like flowers appearing in autumn as the leaves start to turn red.
Leadwort (Ceratostigma willmottianum) - Blooming
In summer and into late fall, Plumbagos flower with clusters of intensely blue 5-lobed flowers that look like Phlox flowers.
Leadwort (Ceratostigma willmottianum) - Growth
Deciduous and evergreen subshrubs and herbaceous perennials. Does well with full sun exposure and partial shade. Some species can reach heights of 4 ft. while others grow as ground covers. Grow Ceratostigma in a mixed or shrub border. In areas where Ceratostigma is not growing hardy, raise plants in a cool greenhouse with a minimum temperature of 35°F (2°C). During the day, set temperatures between 41-50°F (5-10°C), and at night, keep the temperature at 36°F (2°C).
Leadwort (Ceratostigma willmottianum) - Planting
In spring, root softwood cuttings or in summer, root semi-ripe cuttings. Can remove suckers in autumn or spring, and layer in autumn as well. Layering is a propagation method where a stem is pegged to the soil while still attached to the parent plant. This process induces rooting.
Leadwort (Ceratostigma willmottianum) - Pest
Powdery mildew can be a problem.
Leadwort (Ceratostigma willmottianum) - Interesting facts
There are only about 8 known species of Ceratostigma.
Leadwort (Ceratostigma willmottianum) - Soil and irrigation
Although Plumbagos can tolerate inconsistent watering, they thrive with moderate to regular watering. After the flowers fade, apply a thick mulch around the base of the plant. Does best in moderately fertile and light, moist, but well-drained soil.
