Buddleja davidi


Ecolonia’ performed well in the RHS Buddleja trials, where it was well received for its balanced structure; it was also rated 8th out of 52 for its attractiveness to insects.

See notes on Butterflies  & moths

Bearing pale blue flowers with silver grey leaves, the shrub is also notable for its scent and for the long period it remains in flower.



B. ‘Ecolonia’ was named after a nature reserve in Alphen aan den Rijn in The Netherlands where it was found and distributed by the Proefstation voor de Boomkwekerij in Boskoop before 2008 (Ref; Dendroflora No. 48, 2011).




  • Flower Colour: Lavender blue yellow throat
  • Habit: Compact
  • Eventual height: 100-150cm (3-5ft) Spread: 100-150cm (3-5ft)
  • Hardiness: Very hardy - 20°C USDA zones 5-9
  • Leaf colour: mid-green. underside white-hairy 14 x 4.5cm
  • Flowering: Very floriferous. The flowers are 25-30cm (10-12") in length
  • Fragrance: Sweetly scented and rich in nectar
  • Situation: Prefers a sunny position
  • Wildlife: Good for bees, butterflies and other insects
  • Later in the year some close up images of the flowers and leaves will be added along with a botanical description.

Project Details



Place of Origin

Central China, west China and Japan

Plant Heritage

Accession Number B140

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


15 Buddleja were awarded an AGM  at the 2008-10 Wisley Trial.  It was mainly the  Buddleja davidii that were judged but we have many others in our 160+ collection which are worthy winners.


  • Genus Buddleja
  • Species davidii
  • Cultivar 'Ecolonia’
  • Category semi - deciduous Shrub
  • Colours and sizes are approximate and are intended as a guideline, cultivation notes should be followed

Find out more about soil feeding, pruning and pest control.

Cultivation of Plants