Silverbush (Convolvulus cneorum)
Silver Bush
About this plant
Convolvulus cneorum, commonly called Silverbush, is a small evergreen shrub known for its silvery-gray leaves and delicate white flowers. It has a soft, fuzzy texture on its foliage, which gives it a silvery appearance. This plant is often used in gardens for ground cover or as a border plant, adding a bright, silvery touch. It blooms mainly in spring and summer, attracting pollinators like bees.
Taxonomy
Higher classification: Order: Solanales
Origin & Distribution
- Native region
- Mediterranean Basin
- Distribution
- Native to the Mediterranean region, especially southern Europe, and widely cultivated in temperate gardens worldwide.
Care
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- USDA hardiness zones
- 8–11
- Soil pH
- 6.0–7.5 (neutral to slightly alkaline)
- Soil type
- well-draining sandy or loamy soil
Watering. Water sparingly, allowing the soil to dry out between waterings. Overwatering can cause root rot, so ensure good drainage.
Fertilizing. Feed with a balanced, slow-release fertilizer in early spring to support healthy growth. Avoid over-fertilizing, which can reduce flowering.
Convolvulus cneorum is a tough, low-maintenance shrub that thrives in sunny, well-drained spots. It prefers dry conditions and can tolerate drought well. Overwatering or poor drainage can cause root problems, so water sparingly and ensure soil drains well.
Propagation
- Propagation methods
- Cuttings, Seeds
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–summer
Silvery, fuzzy leaves with small, white, funnel-shaped flowers that bloom in spring and summer.
Toxicity & Safety
Not known to be toxic to humans or pets. However, avoid ingestion and prolonged skin contact with sap to prevent mild irritation.
Allergy information
Convolvulus cneorum may cause mild skin irritation in sensitive individuals due to its sap. It is not known for producing airborne pollen that triggers allergies. To reduce exposure, avoid direct contact with the plant's sap and wear gloves when handling.
Common problems
Overwatering can lead to root rot. Poor drainage or excessive shade may cause weak growth. Occasionally, pests like aphids may appear but are usually not a major issue.
Uses
Primarily grown as an ornamental plant for its attractive silvery foliage and white flowers. Suitable for borders, rock gardens, and coastal gardens due to its drought tolerance.
Notes
Prune lightly after flowering to maintain shape and encourage bushier growth. Repotting is rarely needed as it is usually grown outdoors. Sensitive to overwatering, so ensure soil dries out between waterings.