William Bronson :It certainly
wood be nice if the vines covering your outdoor shower could produce an Edible Fruit /Veg - If you want something sure fire
that a lot of people have had good luck with I can recommend Wild Cucumber It
should radially cover your shower and provide a source for chop and drop
material for soil augmentation. It handles partial to full shade well and with lots of water should do even better in direct sunlight!
I have even seen it group to cover the inside of a canvas walled Tipi ! Good luck! For the good of the Craft ! Big AL