Posted: 26/03/2017 at 18:09
Re your PM. about salix caprea having alternate leaves whereas yours has opposite leaves .... in my
opinion it's a salix - one of the types like salix caprea, known as pussy willows - they do hybridise so that may be why the leaves don't fit the descriptions in the books.
Whichever it is, my warning about buildings and drains applies.