Purple spikes along the side of fencing around a private garden
No interactions present.
Thanks for identification. Interesting common name as you said I don't know what the confusion about.
I believe the common name was coined by Clive Stace, certainly appeared first in his book. This hybrid has long been confused with Spiraea salicifolia, which is very rare or extinct in Britain.
Lat/Lng: 51.2, -0.8
OS grid ref: SU8655