Convolvulus cneorum 'Snow Angel'

RHS Plant Profile
silverbush 'Snow Angel'

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Shrubs

A rounded, bushy evergreen shrub to 60cm tall, with silky, silver-green leaves. From late spring to summer it produces a profusion of funnel-shaped, white flowers to 4cm across. Drought tolerant once established

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H4
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Convolvulaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Convolvulus can be annuals, perennials or shrubs, erect or scrambling, with simple or palmately divided leaves and solitary or clustered, open funnel-shaped flowers
Name Status
Unresolved

How to Grow

Cultivation

Grow in poor to moderately fertile, gritty, well-drained soil in full sun in a sheltered site

Propagation

Propagate by cuttings in summer

Suggested planting locations and garden types

  • City and courtyard gardens
  • Mediterranean climate plants
  • Rock garden
  • Banks and slopes
  • Flower borders and beds

Pruning

Prune back hard in early spring to maintain a compact shape

Pests

Generally pest-free

Diseases

honey fungus (rarely)