This is the one weakness with having a site that serves the whole world - we can't really get everyone doing the same thing in their gardens at the same time.
When we're talking about daylilies in July the people in the southern hemisphere are hunkered down under a layer of snow.
What I did was tried to find the average and go from there. I looked at the tens of thousands of photos in the database and looked at when the photos were taken. Using that information I was able to make a report of the average time of people taking photos of each kind of plant, and we went from there.
