Liquid Gold on the Roof! You are in charge when you use urine to fertilize plants. You recycle nutrients and prevent pollution.
Conrad and Jan Geyser of Cotuit, Massachusetts used diluted urine to fertilize a large vegetable and flower garden along with leafy greens and herbs in a greenhouse on their roof.
Every few days Conrad would climb up to his rooftop greenhouse to fertilize potted greens and herbs, such as cilantro, kale and collards with diluted urine.
Urine has also been used instead of or as a substitute for alum a dye fixer that helps the color better penetrate and stick to fabric.
In the late 19th century Londoners could sell their urine for fixing dye! Redheads got a half penny more as their urine was considered better! Urine even got the credit for saving the textile industry!
from: Liquid Gold The Lore and Logic of Using Urine to Grow Plants.