Hardy Hybrids

True Blue

Buddleja True Blue claims to have the truest blue flowers of any Buddleja. The flowers are borne above silver grey foliage on strong stems giving the plant an upright habit. The plant is supposed to have a low seed set.

Over the past 20 years well over 150 new hybrids have come to the market, many raised in the USA.
More of these introductions will be planted in the collection this year. Currently this plant is available for sale in the plant centre but has not been assessed for reliability, hardness, habit and flowering.

The description is taken from the marketing agents’ promotion material and has not been verified by the collection holder.


Bred by Ball Horticultural Company, West Chicago, Illinois, US in 2014.



  • Flower Colour: Blue
  • Habit: Upright
  • Eventual height: 120 - 180cm (4 - 6ft) Width: 180cm (6ft)
  • Hardiness: Fully hardy
  • Leaf colour: Silvery grey
  • Flowering: Early to late summer
  • Fragrance: Fragrant
  • Situation: Prefers full sun
  • Wildlife: Attracts bees

Project Details



Place of Origin

Central China, west China and Japan

Plant Heritage

Accession Number B235

All details of our collection are held on the main Plant Heritage database including plant name, accession number, date of accession and plant source.


  • Genus Buddleja
  • Hybrid True Blue 'Bostulu' EU20152241
  • Category Hardy Hybrid
  • Propagation for resale is illegal without a licence from the agent

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