What does purple smell like?

Just a pretty picture of my lilac bush today.  I have struggled for 6 years to keep this it alive because there is a hackberry tree growing up the middle of it, which would take over if I let it.  Every two months or so in the growing season I have to hack away at the nasty thing, trying to kill it, and I never win.  The lilac bush only blooms for about 6 days each year, so it is a lot of work for comparably little return.  But, the smell is heavenly, and most of the time, it is worth it.

Canon 5D Mark II
105mm - ISO 125
1/100s- f/4