• 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

Ceanothus griseus var. horizontalis 'Yankee Point'

Californian lilac 'Yankee Point'

Californian lilac 'Yankee Point'

© RHS

  • Other common names Californian lilac 'Yankee Point'

  • Family Rhamnaceae

  • Genus Ceanothus can be evergreen or deciduous shrubs or small trees, with simple leaves and small blue, pink or white flowers in profuse axillary or terminal clusters. They are fast-growing but may be short-lived

  • Details 'Yankee Point' is a vigorous evergreen shrub of wide, spreading habit, with small glossy dark green leaves and abundant deep blue flowers in late spring and early 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)

    H4

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in fertile well-drained soil in full sun, sheltered from strong, cold winds. Lime tolerant but may become chlorotic on chalk soils

Propagation Root semi-ripe cuttings in mid to late summer and hardwood cuttings from late autumn to midwinter

Suggested planting locations and garden types Banks and Slopes Flower borders and beds Wall-side Borders City & Courtyard Gardens Coastal Cottage & Informal Garden Gravel Garden Mediterranean Climate Plants

How to care

Pruning Pruning group 8 after flowering; pruning group 13 if wall-trained

Pests Generally trouble free but may be affected by mussel scale insects

Diseases Susceptible to frost damage and honey fungus

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