RE: Wild flowers ??
Heck no you are not wasting your time.
It might not do much for the deer - but the flowers can be really nice. I know that my wife and kids are far more interested to go "check the plots" in the summer if there are some flowers to see, some berries to pick, some bird houses to check, etc.
Sometimes - we even see some deer!
As far as I'm concerned - its all part of making it a year round experience - and passing it on.
Good post -
FH