There is a world wide transportation system that works all day, every day moving plant seeds quietly and efficiently, without burning fuel and that goes largely unnoticed by most of us. The majority of the work is done by the wind but people and animals also help move seeds from one place to another.

And those seeds wind up in the most unusual places. These photos were taken in the parking lot that sits below Petaluma Boulevard between Playa Azul and the pool parlor near the intersection of Washington Street. It’s not hard to imagine seeds blowing into the cracks between the stones that make up the wall. What is difficult to understand is how these plants could sprout and take root without any soil to sink their roots into or any water to keep them alive.