• 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

Lobelia × speciosa 'Fan Orchidrosa' (Fan Series)

lobelia 'Fan Orchidrosa'

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
lobelia 'Fan Orchidrosa'

© RHS 1997

  • Other common names lobelia 'Fan Orchidrosa'

  • Synonyms Lobelia FAN DEEP ROSE
    Lobelia FAN ORCHID ROSE

  • Family Campanulaceae

  • Genus Lobelia can be annuals, perennials or shrubs, with simple leaves and showy 2-lipped flowers that may be solitary or in racemes or panicles

  • Details 'Fan Orchidrosa' is an upright perennial to 50cm, usually grown as an annual, with dark green leaves and deep rosy purple flowers 2.5cm in length in summer and autumn

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • Toxicity Ingestion may cause severe discomfort

  • 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 West-facing or East-facing or North-facing

  • Exposure Sheltered or Exposed

Soil

  • Clay

    Clay

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureMoist but well-drained, Poorly-drained

  • SoilClay, Sand, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Borderline hardy perennial ideal for bedding schemes and in a container. Useful for partial shade with a fertile, moist soil or compost

Propagation Propagate by seed

Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden

How to care

Pruning Old flower stems can be cut down after flowering

Pests Slugs may be a problem

Diseases Generally disease free

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