I don't think I've ever entered something like this before -- Gardening Gone Wild's January 2011 Picture This Photo Contest. I read about it and thought I'd give it a shot.
I brought my Meyer Lemon tree indoors for the winter, and it is thriving in a south facing window. It is absolutely covered in blooms, and is perfuming the room where I use my laptop. Smells just wonderful.
Anyway, I thought I would use a couple of blossoms from the tree for the picture, which was actually taken at the bottom of a glass, not a mason jar, but I hope that's ok. I unwrapped some lemon drops (truthfully, they're lemon-flavored cough drops, a winter staple in our house), and then I mounded the rest of the unwrapped ones around the outside of the glass. I experimented with using a yellow cutting board to make the light more yellow, but didn't like the result. So I bounced some light into it using a white sheet of paper instead.