Pistia stratiotes (Shell flower)

Other names: Water lettuce, Water bonnet

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Where to grow

Soil type
    Soil drainage
    • Pond/In water
    Soil pH
      Sunlight
      • Full Sun
      Aspect
      • West
      • South
      Exposure
      • Sheltered

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      Additional plant details

      Cultivation

      Grow as a floating plant in full sun with some shade at midday. In frost-prone areas, lift in autumn and overwinter at a minimum of 10 degrees C. Alternatively, grow under glass in an indoor pool in full light with a min. water temp. of 15 degrees C.

      Suggested uses

      Sub-Tropical, Aquatic

      UK hardiness

      H1b

      USDA zones

      Zone 9, Zone 10, Zone 11

      Sunset zone

      24, H2

      WUCOLS

      North-Central Coastal = Unknown
      Central Valley = Unknown
      South Coastal = Unknown
      South Inland = Unknown
      High and Intermediate Desert = Unknown
      Low Desert = Unknown

      Foliage

      Evergreen

      Habit

      Spreading

      Native to

      Tropical regions worldwide, Subtropical regions

      Drought tolerant

      No

      Flood tolerant

      No

      Toxicity

      Not toxic

      Plant care

      Pruning

      Remove yellowing leaves promptly. Potentially invasive soa avoid introducing in natural water (rivers, lakes or ponds).

      Propagation

      Separate plantlets in summer.

      Pests

      Diseases

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