• 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

Malva sylvestris

common mallow

common mallow

© RHS

  • Other common names common mallow
    cheese cakes

    cheese flower
    cheeses
    high mallow
    hock
    hock herb
    marsh mallow
    mauls
    maws
    round dock
    tall mallow

    see more
  • Family Malvaceae

  • Genus Malva can be annuals, biennials or perennials, with rounded, often palmately lobed leaves and 5-petalled, open funnel-shaped flowers in the leaf axils or in terminal racemes

  • Details M. sylvestris is an erect perennial that throws up flowering spikes up to 1.5m in height in summer and autumn. Flowers are grouped in the leaf axils and are five-petalled, notched and pink. Leaves are rounded at the base of the plant, but five-lobed on the stems

  • Plant range Europe

Characteristics

  • Foliage Semi-evergreen

  • Habit Columnar/Upright

  • 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

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Chalk

    Chalk

  • Clay

    Clay

  • Sand

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Chalk, Clay, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Occurs naturally, especially in the south of England, on disturbed ground and grassy verges

Propagation Propagate by seed

Suggested planting locations and garden types Wildflower meadow Wildlife Gardens

How to care

Pruning None required

Pests Generally trouble free

Diseases Plants can be affected by hollyhock rust and in turn infect cultivated hollyhocks

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