• 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 'Blue Gem'

  • Synonyms Hebe × franciscana 'Blue Gem'
    Hebe albicans 'Blue Gem'

    Hebe latifolia

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  • 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 An evergreen reaching a height of 1.3m, with a rounded, but loosley spreading habit. The oval to ellipse-shaped leaves are light to mid-green and are almost succulent in texture. Light mauve flowers bloom from summer to autumn

Characteristics

  • Foliage Deciduous

  • 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)

    H4

Colour

Sunlight

  • Full sun

  • Partial shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained, Well-drained

  • SoilChalk, Loam, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height

How to grow

Cultivation Grows well in poor to moderately fertile soil in sun or partials shade with protection from cold, drying winds.

Propagation Propagate by seed sown in containers in a cold frame as soon as ripe. Cultivars will not come true. Root semi-hardwood cuttings in late summer or autumn with added bottom heat

Suggested planting locations and garden types Drought Resistant Flower borders and beds Low Maintenance City & Courtyard Gardens Cottage & Informal Garden Mediterranean Climate Plants Patio & Container Plants Wildlife Gardens

How to care

Pruning Pruning group 9

Pests Susceptible to aphids

Diseases May be susceptible to a leaf spot and a downy mildew

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