• 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 × piperita 'Black Mitcham'

peppermint 'Black Mitcham'

  • Other common names peppermint 'Black Mitcham'

  • Synonyms Mentha × piperita 'Mitcham'

  • Family Lamiaceae

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

  • Details 'Black Mitcham' is a spreading perennial to 40cm tall and 90cm wide with strongly aromatic, oval, pointed and toothed dark green leaves flushed with bronze and dark red. Small, pale purple flowers form dense terminal spikes from summer into autumn

Characteristics

  • Foliage Deciduous

  • Habit Suckering

  • 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

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

  • Exposure Sheltered or Exposed

Soil

  • Clay

    Clay

  • Loam

    Loam

  • Chalk

    Chalk

  • Sand

    Sand

  • MoistureMoist but well-drained, Poorly-drained

  • SoilClay, Loam, Chalk, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in a poor, moist soil in full sun. Restrict its spread by planting in deep containers and plunging them into the soil, or by growing in small, contained beds

Propagation Divide plants in spring or autumn. Softwood cuttings may be taken in spring. Pieces of rhizome can be potted up at any time in the growing season and grown on until established then planted out

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

How to care

Pruning Cut back old stems at the end of the year to ground level

Pests Generally trouble free

Diseases Powdery mildews and rust diseases can be troublesome

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