On May 20, 3:17 pm, Stewart Robert Hinsley
wrote:
I suggest that you look for images of Spiraea x arguta, which is
(a plant known as) Bridal Wreath, and which does have small white
flowers, and small leaves, and can be grown as a hedge (my father has it
as a clipped hedge, at the expense of the flowers, but clipping once a
year after flowering might be a workable regime).


It very well might be privet then. On the other hand, I searched on
Spiraea x arguta and did find photos that looked promising:

http://www.diplomlandespfleger.de/en...eaxarguta.html *does*
look like what my grandmother had, and I believe it may be it.