Wow that's a horrible title.. This question is to discuss the location data for Q/A questions. specifically where on the help center should we inform our users and what the wording for asking for the location should be.
Some background: there have been at least four meta questions about how to get location data from our users on questions that should have some type of climate zone. From this answer on my previous meta question, it seems the help center would be an appropriate place to let our users know that location data for certain questions is important.
Another thing that was pointed out is that it is important for our users to know why the location is important. Things such as temperature, precipitation, and other high/low data should be basic knowledge for any gardener, and should be added to a question when appropriate.
One other thing is the "when appropriate" factor, which I myself am kinda fuzzy on.