• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Hebe 'Rhubarb and Custard'

hebe 'Rhubarb and Custard'

hebe 'Rhubarb and Custard'

© RHS

  • Other common names hebe 'Rhubarb and Custard'

  • Family Plantaginaceae

  • Genus Hebe are evergreen shrubs or small trees, with paired, simple leaves and racemes or spikes of small, 4-lobed, tubular to salver-shaped flowers in summer and autumn

  • Details 'Rhubarb and Custard' is a rounded, bushy, evergreen shrub to about 60cm. The stems are dark purple and the small, oval leaves are grey-green with an irregular cream to yellow margin and flushed with pink, especially in cold weather. Short spikes of small, purple flowers appear in mid- to late summer

Characteristics

  • Foliage Evergreen

  • Habit Bushy

  • 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)

    H3

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect North-facing or East-facing or South-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAlkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Easy to grow in a warm position in sun or partial shade with moist but well-drained soil

Propagation Propagate by semi-hardwood cuttings

Suggested planting locations and garden types Ground Cover Low Maintenance Garden Edging Coastal Patio & Container Plants City & Courtyard Gardens Cottage & Informal Garden

How to care

Pruning Pruning group 9

Pests Can get aphids and tortrix moth

Diseases A leaf spot and a downy mildew may be a problem

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