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1L Blue Cardinal Flower - Lobelia siphilitica

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Blue Cardinal Flower - Lobelia siphilitica - 1L Pot

The Blue Cardinal Flower is a clump-forming perennial with upright leafy stems. It bears dense spikes of light to bright blue tubular, two-lipped flowers from summer through until autumn. It enjoys moist conditions so it is a great plant for a bog or waterside location.



  • Foliage Colour: light green in spring, summer and autumn
  • Flower Colour: blue in summer and autumn
  • Approx. Growth Height: 70cm
  • Max. Spread: 40cm
  • Flowering Time: summer and autumn
  • Planting Time: spring
  • Uses: in ponds, bog gardens, wildflower gardens
  • Exposure: sheltered
  • Growing Habit: clump forming, erect
  • Hardiness: hardy
  • Rate of Growth: max height in 2-5 years
    • Supplied As: 9cm Pot / 1L Pot / 3L Pot 
More Information
Colour Test Sand
Flower Colour Blue
Flowering Month July, August, September
Needs Ericaceous Compost? No
Colour Blue, Green, Purple, Sand
Eventual Height 0.6m-0.9m
Foliage Colour Green
Supplied As 1-8L Pot
Supplied As 1L Pot
Type Pond Plants