• 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 hulkeana

New Zealand lilac

New Zealand lilac


  • Other common names New Zealand lilac

  • 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 H. hulkeana is a small evergreen shrub of open growth, with glossy, toothed oval leaves, often red-edged. Flowers pale lilac, in very large, open panicles

  • Plant range New Zealand (S.Island)


  • 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)




  • Full Sun

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

  • Exposure Sheltered


  • Chalk


  • Chalk


  • Chalk


  • Chalk


  • MoistureWell-drained, Moist but well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAlkaline, Neutral


  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grows well in poor to moderately fertile soil in sun or partials shade with protection from cold, drying winds. Tolerant of some pollution and can also be grown in a cool glasshouse in a loam-based compost with shade from hot sun

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 Banks and Slopes Flower borders and beds City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants

How to care

Pruning Pruning group 9

Pests aphids may be a problem

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

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