• 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

Leucanthemum × superbum

Shasta daisy

  • Other common names Shasta daisy
    max daisy

  • Synonyms Chrysanthemum maximum misapplied
    Chrysanthemum superbum

    Leucanthemum maximum misapplied

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  • Family Asteraceae

  • Genus Leucanthemum are robust herbaceous perennials with narrowly oblong leaves and daisy-like flower-heads with white rays

  • Details

    L. x superbum is a robust, clump-forming perennial with thick, narrow, dark green leaves. From early summer to early autumn bears solitary, single or double, white flower heads up to 10cm across with yellow centres

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

  • 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)

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Clay

    Clay

  • Loam

    Loam

  • Chalk

    Chalk

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilClay, Loam, Chalk, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in moderately fertile, moist but well-drained soil in full sun or partial shade; plants may need support (see staking perennials)

Propagation Propagate by division in early spring or late summer

Suggested planting locations and garden types Flower borders and beds Cut Flowers Cottage & Informal Garden Wildflower meadow

How to care

Pruning Deadhead regularly then cut stems down to the ground in winter

Pests Can get aphids and leaf and bud eelworms

Diseases Generally disease free

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