Horsetail and creeping jenny - very compatible, they both like it wet. This kind of plant combination is fairly easy to maintain because it doesn't need a drain hole in the pot and you can fill it with many days worth of water, even in hot weather.
I planted "Creeping Jennny" in containers attached to my privacy fence pairing them with coleus that had the splotches of the same colors. Below this container are Mexican petunias (taller variety than the dwarf). (San Antonio, Tx.)