For any growing thing; water is life. I have always loved aquariums and the VA was one of my first stops when I came to the area. All along this bike path are the “Rock Band” series; the first ever series of caches I found.
You're looking for a small, camouflaged container; too small for anything but a log and a pencil in case you didn't bring your own writing tool.
This is a high muggle traffic area, so some stealth is required.
Congrats to Steve-n-Kim for FTF!