Yes, I’m advocating using urine as fertilizer.
It’s what our forefathers used. It’s what Americans used during the World Wars when fertilizer was in such short supply because its ingredients were needed to make explosives. It’s what people in developing nations, and those attuned to the need to conserve our resources, are using.
I recommend the liquid fertilizer urine for several reasons.
1. Using 13-26 gallons of water to flush less than a pint of urine seems to be a terrible waste of water. Of course, some of my friends in Sun City Center already conserve by using the motto, "If it’s yellow, let it mellow. If it’s brown, flush it down." But that's not as water-wise as what I'm proposing.
2. Gardening costs are less because you’re not buying expensive fertilizers.
3. Urine goes further than other liquid fertilizers.
4. You’re helping to reduce the amount of sewage, resulting in less nutrients in our waterways.
5. Urine is an ideal nutrient for plants.

How much should you apply?
Trees, shrubs and lawn should cope well without dilution. Use undiluted urine on plants that are experiencing a near-death experience. It’s a last resort fertilizer, but it will be effective. (See the testimonial below.)
Dilute urine to 10-to-1 with water for outdoor plants in the growth stage.
Dilute urine to 50-to-1 with water for use on potted plants because they are much more sensitive to fertilizers of any kind.
Do not use urine older than 24 hours on your plants as the urea turns into ammonia and will burn your plants. If it’s not fresh, add it to your compost heap. Adding undiluted human urine to your compost heap will help to heat it up quickly. It is an excellent activator and adds to the final nutrient value.
Do NOT use urine on any food plants two weeks before harvesting.
For plants with fruit, apply under the plant, not directly on foliage. It’s best for all plants to do this, but it’s imperative that the urine does not get on the leaves of plants with fruit.
Some folks worry about the vitamin supplements antibiotics, and other medications they are taking. Studies have shown that they are in such minute quantities that they are negligible — especially when urine is diluted as I’ve recommended.

Still looking for evidence of its worth? How about a lab test?
Carolyn Colwell, in her article for HealthDay, "Human Urine Safe: Productive Fertilizer," October 8, 2007, wrote:
"The researchers chose cabbage as a test crop, because it needs a lot of nitrogen, it is distributed worldwide, and it can be preserved as sauerkraut.
"The cabbage fertilized with urine was compared with similar plots of cabbage that either went unfertilized or where commercial fertilizer was used. At harvest, the cabbage enriched with the urine had several advantages: It was slightly larger, it grew to its maximum size more quickly, and, for most of the growth cycle, it suffered less bug damage than the commercially fertilized variety.
"Cabbage from all three plots was made into sauerkraut and taste-tested by 20 panelists. Each type tasted different, but all were rated "good," the study said.
"As a result of the findings, the team concluded that urine produced by one person over a year would be enough to grow 160 cabbages — that’s 64 kilograms (141 pounds) more cabbage than could be grown in a similar plot fertilized with commercial fertilizer. They recommend collecting urine from eco-type toilets, storing it, then scattering it on the soil around the plants rather than directly on them."
Still need more evidence? How about this unsolicited testimonial from a homeowner in Hillsborough County, FL. She's water-wise and willing to try whatever will work to save the plants on her lanai. (All the photos in this article were taken by her of the plants on her lanai.) She writes:
"It has to be the Vitamins!!!
"I remember you said you saved and used urine for fertilizer.
"So I started watering a couple of scrawny, little plants that were on the edge of dying off. Look at them! (See below.)
"It has to be all the vitamins I take. I’ve never seen anything grow like this, especially around here where all I do is occasionally water them.
"My bay leaf tree I got from my daughter’s tree never did much in the pot, the leaves are dark and get smaller and smaller. I dumped my "Miracles Grow" only a time or two and look at the big green shoot and leaves. Plus only once or twice did I dump some on the ivy on the deck and look at the leaves on top.


"I stopped regular watering of the corn plant and I swear it looks six inches taller. After the third watering with my ‘Miracle Grow’, check out all the new light green leaves on the camellia plant in the corner. Wish I’d thought to take a "before" of the corn plant, it was just sprouting up in the pot. Who would have known this would happen?"


So why not try urine, the liquid fertilizer that is within you?