How to Repurpose Dog Poop into Garden Fertilizer

How to Repurpose Dog Poop into Garden Fertilizer

As a dog owner, I’m always looking for ways to be more sustainable and reduce waste. One way I’ve found to do this is by repurposing my dog’s poop into fertilizer for my garden. At first, the idea seemed a bit strange, but after doing some research, I discovered that dog poop can actually make an excellent fertilizer.

The Benefits of Using Dog Poop as Fertilizer

There are a few key benefits to using dog poop as fertilizer:

  • Nutrient-rich – Dog poop contains lots of key nutrients that plants need to thrive, including nitrogen, phosphorus and potassium. These nutrients make dog poop an excellent fertilizer.

  • Free and abundant – As a dog owner, you have easy access to this free fertilizer source. No need to buy chemical fertilizers when you can use what you already have.

  • Reduces waste – Repurposing dog poop keeps it out of landfills and prevents water pollution from runoff. It’s a great way to be more eco-friendly.

  • Convenient – You can collect the poop right in your own backyard. No need to compost or transport it elsewhere.

  • Safe for plants – Dog poop provides a gentle, slow-release fertilizer that won’t burn plants when applied correctly.

How to Compost Dog Poop for Fertilizer

Composting is the easiest way to convert dog poop into a usable garden fertilizer. Here are the steps:

Choose a Compost Bin

You can compost dog poop in a simple pile, bin or tumbler. Make sure your compost bin has good airflow and drainage. I prefer to use a tumbling composter which makes it easy to mix regularly.

Add the Right Ratio

The ideal recipe for composting dog poop is 2 parts brown material (carbon) to 1 part dog poop (nitrogen). Leaves, sawdust, straw, cardboard and wood chips all make great brown additions. This ratio prevents odor and helps the poop break down.

Mix and Maintain Heat

To compost dog poop, you want the temperature of the compost to get up to at least 140°F to kill pathogens. Mix or tumble the compost regularly to distribute heat and nutrients. Keep the compost moist but not soaked.

Let It Mature

It can take 4-12 months for the dog poop to fully compost, depending on conditions. When it’s ready, it will look dark, crumbly and earthy, with no recognizable poop. At this point, it’s safe to use!

Apply to Garden Beds

You can spread the finished compost over your garden beds as fertilizer. Mix it into the top few inches of soil before planting. About 1 cup per square foot is a good amount. The nutrients will slowly release into the soil as the plants grow.

Tips for Safe and Effective Use

When used correctly, composted dog poop makes an excellent fertilizer. Here are some top tips:

  • Wear gloves when handling to prevent the spread of bacteria. Wash hands after.

  • Don’t use on edible plants that have direct contact with soil. Better for ornamentals and trees.

  • Compost thoroughly first to kill pathogens. Don’t apply fresh poop directly.

  • Mix into soil rather than top-dressing so bacteria have no access to air.

  • Keep compost away from water sources to prevent contamination.

  • Apply at least 1 month before harvesting any vegetables.

  • Dilute well – composted dog poop is high in nutrients so a little goes a long way.


Composting dog poop takes a waste product and gives it new life as a fertilizer. It’s one of the best examples of the circular economy in action. With a simple compost pile, tumbler or bin, dog owners can produce bushels of nutrient-rich fertilizer for free. As long as proper precautions are taken, dog poop fertilizer is a safe and effective way to boost your garden while also reducing waste. Give it a try – your plants and the planet will thank you!