I am going to go ahead and say cold hardy kiwi!!! My first year with it and I am loving the plant so much. Very excellent growth... outdoor shower plumbed to water your plants? Post a sign that says yes please pee in the shower!
William Bronson :It certainly woodbe 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
Success has a Thousand Fathers , Failure is an Orphan
Great suggestion! That is what my PFAF search came up with, among others. I plan on filling the tote with composting worms, and use it to filter the shower and sink discharge before it goes to the blackberries mulch pits.
I have also considered annual beans, scarlet runner beans, bamboo(!) , Italian tree tomatoes, oyster mushrooms,mimosa, grapes, rose of Sharon, and many more.