Convolvulus cneorumSilverbush

The Convolvulus cneorum, commonly known as the Silverbush, is a low mounding evergreen shrub from the rocky coasts of the central Mediterranean, and the silk on its narrow leaves gives the whole plant a metallic silver cast that holds year round. White funnel flowers with a pink-flushed reverse open from spring well into summer.

It is planted in dry borders, rockeries, median strips and coastal gardens, and it asks for sharp drainage above everything else.

Specifications

• Height0.6 to 0.9 metres
• Width0.9 to 1.2 metres
• Native toRocky coastal areas of the central and eastern Mediterranean
• FoliageNarrow, silky silver-grey leaves held densely on a compact frame; evergreen
• Growth rateModerate

Conditions

• SoilRequires sharply drained gravelly or sandy soils and will not tolerate wet feet
• LightFull sun
• WaterLow; drought-tolerant once established
• ClimateThrives in Mediterranean, coastal and semi-arid regions and tolerates light frost

Additional Features

• FlowersWhite funnel-shaped flowers with a pink-flushed reverse, spring into summer
• FormLow, dense, rounded mound
• UsesIdeal for dry borders, rockeries, low mass planting, median strips and coastal gardens
• SpacingPlant 0.6 to 0.8 metres apart for a continuous low mass
• Low MaintenanceTrim lightly after flowering; avoid cutting into bare wood
• Pest ResistanceGenerally pest-free where drainage is sharp
• Drought ToleranceHolds silver foliage through hot dry summers without irrigation
• Salt ToleranceNative to sea cliffs and tolerant of salt-laden wind

The Silverbush brings year-round silver to a hot dry bed at a scale that suits edging, medians and coastal frontages.