• 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

Utricularia sandersonii

Sanderson's bladderwort

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
  • Other common names Sanderson's bladderwort

  • Family Lentibulariaceae

  • Genus Utricularia can be aquatic, terrestrial or epiphytic, insectivorous annuals or perennials with linear to kidney-shaped leaves bearing bladders to trap insects, and solitary or racemose, 2-lipped flowers held above water level

  • Details U. sandersonii is a terrestrial bladderwort that can be recognised by its spurred white flower that typically bears two distinct lobes above or ""bunny ears"" and is marked with pale blue on the lower lobes. Like other species, its carnivorous nature stems from the capture of micro-rganisms by minute bladders on underground stems

  • Plant range Temp S Africa

Characteristics

  • Foliage Evergreen

  • Habit Mat forming

  • 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)

    H2

Colour

Sunlight

  • Full Sun

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

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • MoisturePoorly-drained

  • SoilSand

  • pHAcid

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 Pot in a sphagnum, peat (or peat substitute) and sand mix. Water using rain or pure water. Stand pots in a few centimetres of water to keep permanently moist. See carnivorous plant cultivation

Propagation Propagate by division or propagate by seed

Suggested planting locations and garden types Patio & Container Plants

How to care

Pruning Deadhead

Pests Generally trouble-free

Diseases Generally trouble-free

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