Ceratostigma griffithii
Ceratostigma griffithii · Plumbaginaceae
📷 Lovelocker · Public domain
The gardener's calendar
Ceratostigma griffithii is in full bloom: enjoy it, watch watering in hot weather and let spent flowers feed pollinators before pruning.
ID card
- Scientific name
- Ceratostigma griffithii
- Family
- Plumbaginaceae
- Type
- Shrub
- Adult height
- 60 cm
- Flowering period
- August to October
- Foliage
- Deciduous
- Hardiness
- Moderate (temperate zones)
- Origin
- Himalayas
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability medium.
Expert tips
The key tip
Ceratostigma griffithii flowers abundantly with direct sun and if you leave it a bit dry in summer: it's a flexible shrub that grows progressively and only needs a light cleanup in late winter (no hard pruning).
The common mistake
Overwatering it or pruning severely in spring: it doesn't like being disturbed and reflowers poorly after heavy cutting.
The pro's trick
In March, prune lightly just above the buds: keep the structure most of the time, it naturally thickens with age and develops a beautiful natural shape.
Seasonal watch
September-October: watch for the cold arriving: young shoots can freeze.
Care
Light exposure
Place your Ceratostigma griffithii in full sun for abundant flowering and optimal colors. A location with at least 6 hours of direct daily light is ideal. In very hot climates, light afternoon shade can prevent leaf scorch.
Watering
Water regularly during the growing and flowering periods, keeping the soil moist but well-drained. Reduce watering in winter when the plant enters dormancy. Avoid excess moisture that could cause root rot.
Soil and drainage
Prepare rich, well-draining soil that is slightly acidic to neutral. Enrich the soil mix with compost or organic matter to promote growth. Effective drainage is essential for root health.
Pruning and maintenance
Prune lightly in spring to maintain a compact shape and encourage branching. Remove dead or weak stems after winter. Light pruning after flowering helps prepare the plant for the following year.
Fertilizing
Apply balanced fertilizer or one slightly higher in potassium from May to August to support flowering. One to two applications per month is sufficient. Reduce or stop fertilizing in winter.
Pests and diseases
Watch for aphids and spider mites during prolonged dry periods. Regular watering and good air circulation reduce risks. Powdery mildew may appear in overly humid or poorly ventilated environments.
Did you know?
Ceratostigma griffithii, discovered in the Himalayas, is named after botanist William Griffith who identified it in the 19th century. Its genus name 'Ceratostigma' literally means 'horned stigma' in reference to the distinctive structure of its pistil. This plant is particularly prized for its spectacular blue autumn flowering, a rare color among temperate shrubs.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- PlumbagoCeratostigma plumbaginoides
- Sea thriftArmeria maritima
- German staticeGoniolimon tataricum
- Chinese-plumbagoCeratostigma willmottianum
- Armeria arenariaArmeria arenaria
- Limoniastrum monopetalumLimoniastrum monopetalum
Tips generated and checked by Viridia — adapt them to your local climate.