• 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

Mimulus ringens

Allegheny monkey flower

  • Other common names Allegheny monkey flower

  • Family Phrymaceae

  • Genus Mimulus can be annuals, perennials or evergreen shrubs, with paired leaves and 2-lipped tubular or trumpet-shaped flowers in terminal racemes or in the leaf axils

  • Details A upright, deciduous perennial that grows to a height of up to 50cm, with long, narrow green leaves and pale purple or sometimes white flowers in summer

Characteristics

  • Foliage Deciduous

  • 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)

    H4

Colour

Sunlight

  • Partial shade

  • Full sun

  • Aspect West-facing or South-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, Neutral, Alkaline

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in fertile, very moist soil in sun or partial shade, ideal for damp beds or bog gardens

Propagation Propagate by seed

Suggested planting locations and garden types Flower borders and beds Garden Edging Low Maintenance Wall-side Borders Cottage & Informal Garden

How to care

Pruning Cut back old growth at the end of the season

Pests May be susceptible to damage by slugs and snails

Diseases May be susceptible to powdery mildews

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