ooh yeah, water sprite is great for that. I have some that are nearly 3 feet tall! They're easy to care for and do fine in low light and no ferts.yourchoice said:.might want to try long skinny plants.
hornwort and anachris are also capable of getting tall (gotta prune mine constantly to prevent them from hitting the canopy). don't know about wisteria, as I've never had any myself.