• 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

Mentha spicata var. crispa

curly spearmint

  • Other common names curly spearmint

  • Synonyms Mentha crispa
    Mentha crispa L. (1753)

    Mentha spicata 'Crispa'
    Mentha viridis var. crispa

    see more
  • Family Lamiaceae

  • Genus Mentha are aromatic, rhizomatous perennials with opposite, toothed leaves and small tubular flowers in spikes of whorls in summer

  • Details M. spicata var. crispa is an aromatic perennial to 60cm, spreading by creeping rhizomes. The leaves are bright green, broad and crinkled. Whorls of tiny, pale purple flowers appear on terminal spikes in summer

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Leaf

  • 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)

    H7

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Sand

    Sand

  • Loam

    Loam

  • MoisturePoorly-drained, Moist but well-drained

  • SoilChalk, Clay, Sand, Loam

  • 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 any moist soil, in any situation. Can be invasive, so restrict root run

Propagation Propagate by division in spring or autumn

Suggested planting locations and garden types Cottage & Informal Garden Patio & Container Plants

How to care

Pruning Cut back after flowering

Pests Can get blue mint beetle, leafhoppers and caterpillars

Diseases May be subject to powdery mildews and mint rust

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