Viburnum plicatum f. tomentosum 'Shasta'

RHS Plant Profile
Japanese snowball 'Shasta'

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Japanese snowball 'Shasta' RHS
Japanese snowball 'Shasta' RHS

Synonyms

Viburnum 'Shasta'

Shrubs
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'Shasta' is a wide-spreading, deciduous shrub with layers of horizontal branches forming a tiered effect and strongly-veined, dark green, ovate leaves that turn purplish-red in autumn. Flowerheads up to 15cm across are borne in spring and comprise a showy outer ring of sterile ray florets surrounding the smaller, fertile florets which may be followed by bright red fruits that mature to black

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

2.5-4 metres

Size

Time to Maturity
5–10 years
Max Spread
2.5-4 metres
Max Height
2.5-4 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Exposed or 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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Viburnaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Potentially harmful
Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamentalnot to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus
Viburnum can be deciduous or evergreen shrubs with opposite, simple or palmately lobed leaves and clusters of small, often fragrant white or pink flowers, followed by red, blue or black berries
Name Status
Accepted

How to Grow

Cultivation

Grows well in most moderately fertile, humus-rich, well-drained soils in full sun or partial shade

Propagation

Propagate by softwood cuttings in summer

Suggested planting locations and garden types

  • Cottage and informal garden
  • Architectural
  • Low Maintenance
  • Flower borders and beds

Pruning

Pruning group 1. Tolerates hard renovative pruning

Pests

May be susceptible to aphids and viburnum beetle

Diseases

May be susceptible to Phytophthora, honey fungus, grey moulds and leaf spot