Posted: 12/01/2014 at 20:45
Viburnum tinus peaks around now but does what it likes when it likes. There are both on mine.
You didn't mentioned skimmia, I think some of those are male or female but I can't grow those in my very alkaline garden so haven't investigated.
Hollies don't need to be that close, within an insect's flying distance. One in the neighbour's garden will do.