Purple Loosestrife produces a honey with a greenish
tinge. In the cell the light refracts/reflects? to provide
a very green color.
 
        Extracted its produces a typical looking honey
except when sun light reflects of the jar there is a
motor oil like greenish tinge.
 
        Loosestrife honey is often refered to as
"motor oil honey" for this reason.
 
        Note: the pollen of loosestrife is also green.