Buddleja davidi


B. ‘Dartmoor’ is instantly recognizable by its unique magenta to light purple inflorescences comprising compound branched panicles, 20–30 cm long, instead of the typical single terminal spike. The shrub can grow up to 5 m in height (if left unpruned); however the green foliage is unremarkable and all but identical to the type. The weight of the large inflorescences causes the ends of the branches to droop, bestowing a distinctive arching structure.

Reduce height in November by 50% to prevent wind damage.

See cultivation notes



Buddleja Dartmoor’ is arguably the most unusual B. davidii cultivar ever raised. Cloned from a plant found growing in a small ravine on Dartmoor near Yelverton by a retired American gardener, Mr Hayles; the story goes that with his wife clinging onto him, Mr Hayles was able to reach down and grab some propagation material from the plant.

The shrub was introduced to commerce in 1973 and accorded the RHS Award of Garden Merit (record 678) in 1993 (reaffirmed 2010).


  • Flower Colour: Magenta to light purple compounded branched panicles
  • Habit: Slightly spreading
  • Eventual height: 200-250cm (6-8ft) Spread: 200-250cm (6-8ft)
  • Hardiness: Very hardy - 20°C USDA zones 5-9
  • Leaf colour: Medium green
  • Flowering: Very floriferous. The flowers are 20-30cm (8-12") 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 B033

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 'Dartmoor' AGM
  • 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