Buddleja davidii


Buddleia is a popular garden plant which was introduced into the UK from China in the 1890s and has now become widely naturalised on waste ground, along railway lines and in towns. Its familiar purple flowers bloom from June to October and attract all kinds of butterflies and moths looking for nectar sources, particularly in urban areas. Its winged seeds and dispersed by the wind and find it easy to colonise stony ground.

How to identify

Buddleia is a very familiar bush, with large, drooping spikes of purple (or sometimes white) flowers. It has long, narrow leaves and the flowers have a honey-like fragrance.

Where to find it

Widespread, except in the far north.


When to find it

  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December

How can people help

Although Buddleia is an introduced species, it has become an important nectar source for many species of butterfly and moth, especially in urban areas where natural habitats have been lost and gardens are now important corridors for wildlife moving about the country. Plant Buddleia in your garden and enjoy watching who comes fluttering by for a drink... To find out more about wildlife-friendly gardening, visit our Wild About Gardens website: a joint initiative with the RHS, there's plenty of facts and tips to get you started.

Species information

Common name
Latin name
Buddleja davidii
Trees and shrubs
Height: up to 4m
Conservation status
Introduced species.