Most of my photos come from my own gardens, but sometimes I take my camera to work ~ 200 acres to snap there!
I haven't contributed too much so far but the photos I have put on PlantStew have all been from my own garden.
The photos that I upload have been from my garden and yard, except for a water lily pic which came from the lake near where my son lives. I have had success editing photos using the Faststone image viewer that I learned about here on the Stew. It is easy to download. It has a "batch convert" feature which allows for resizing of a large number of photos at the same time.