This is the hybrid between Spiraea douglasii (Steeple-bush) and Spiraea salicifolia (Bridewort). It has intermediate features such as serrated leaves and some pubescence. It is a garden plant which escapes readily.

It has been recorded throughout the British Isles with particular concentrations in the lowlands of Scotland and north west England.

Talacre dunes, North Wales 30th July 2007

Added on 23rd february 2008, updated 11th February 2012