How Horse Manure Helped Us Make Hot Compost and Build Better Soil

Sometimes a compost pile needs a little push.

At Hideaway Homestead Ranch, we had been building our compost pile from materials available around the property — wood chips, kitchen scraps, green plant material, old potting soil, cow manure, and unfinished material from previous compost.

The pile was breaking down, but we weren't getting the kind of heat we wanted.

Then we added horse manure.

After mixing the manure into the pile, turning everything thoroughly, and making sure it had enough moisture, we started seeing a noticeable increase in temperature.

That experiment taught us something important: manure isn't simply animal waste. Managed correctly, it can become a useful resource for building compost, recycling nutrients, and improving soil.

Why Horse Manure Works Well in Compost

A compost pile needs a mixture of carbon-rich and nitrogen-rich materials.

Wood chips, dry leaves, straw, and woody plant material provide plenty of carbon. Manure and fresh green materials supply more nitrogen.

Microorganisms use those materials as they break the pile down.

University of Minnesota Extension recommends an overall carbon-to-nitrogen ratio around 25:1 to 30:1 for finished compost and notes that composting horse manure can speed decomposition while helping retain nutrients.

For us, adding horse manure appeared to give our existing pile something it was missing.

We already had plenty of woody material.

The manure helped bring the pile into a better balance.

What Happened When We Added Horse Manure

The change wasn't instantaneous, but after adding the manure and turning the pile, the temperature started climbing.

That was exactly what we'd been trying to accomplish.

Rather than relying on guesswork, we started checking the center of the pile with a compost thermometer.

That allowed us to see how the pile responded when we changed:

• The amount of manure
• Moisture
• Airflow
• Turning frequency
• The mixture of woody and green material

This is one of the things we're enjoying about composting.

It's basically a biological experiment sitting next to the garden.

Change something.

Measure the result.

Learn.

Adjust.

Repeat.

Horse Manure Isn't a Magic Compost Ingredient

Our experience doesn't mean that dumping a mountain of horse manure onto any compost pile will automatically create perfect compost.

The manure still needs to work with the other materials in the pile.

Too much woody material can slow decomposition.

Too much wet nitrogen-rich material without enough structure can create a dense pile with poor airflow.

Moisture matters.

Oxygen matters.

Pile size matters.

The mixture matters.

That's why we prefer thinking about manure as one part of the compost system, rather than a magic ingredient.

If your own pile isn't heating up, we've also put together a separate troubleshooting guide:

Read: Why Isn't My Compost Pile Heating Up? 7 Things to Check

Why We Compost Manure Instead of Using It Raw

One of the advantages of composting manure is that the biological process changes the material before it reaches the garden.

Proper composting helps stabilize organic material and can reduce weed seeds, fly larvae, and some pathogens. University of Minnesota Extension specifically lists nutrient retention, faster breakdown, and destruction of weed seeds and fly larvae among the benefits of properly composting horse manure.

Penn State Extension also notes that horse and cow manure can carry weed seeds and that sufficient composting temperatures can help neutralize them.

That gives us another reason to let the composting process do its work instead of simply moving fresh manure straight into our garden beds.

Mixing Horse Manure With Carbon-Rich Materials

Because our compost already contains plenty of woody material, horse manure fits naturally into what we're building.

Some of the carbon-rich materials we use include:

• Wood chips
• Partially decomposed woody material
• Old plant material
• Dry organic material left from previous compost
• Other coarse material available around the homestead

Those materials give the compost pile structure while the manure contributes additional nitrogen.

We aren't trying to hit a laboratory-perfect recipe every time.

Instead, we're learning to watch the pile.

If it's dry, we add moisture.

If it's compacted, we turn it.

If it's cold despite having plenty of carbon, we look at adding more nitrogen-rich material.

The compost thermometer gives us feedback on whether those changes are actually working.

Watch Our Hot Compost Experiment

Our main compost video shows exactly what happened after we added horse manure, turned the pile, and started monitoring the temperature.

Watch: Making Hot Compost at Hideaway Homestead Ranch

You can also read the full article covering the process:

Read: Making Hot Compost — How We Finally Got Our Compost Pile Heating Up

Together, these projects show the progression from simply building a compost pile to actually learning how to manage one.

Using Resources Already Around the Homestead

One of our bigger goals is to become better at using resources that are already available around us.

Our compost pile is a good example.

Instead of viewing things like:

• Kitchen scraps
• Wood chips
• Manure
• Old potting soil
• Green plant material
• Finished compost
• Collected rainwater

as unrelated materials, we're learning how they can work together.

Organic material becomes compost.

Compost goes into the garden.

The garden produces food and more organic material.

And the cycle starts again.

The less material we have to haul away — and the less soil fertility we have to haul in — the more resilient the homestead becomes.

Horse Manure, Soil Health, and Regenerative Agriculture

This is also where a little compost pile begins connecting to the much bigger direction we're taking Hideaway Homestead Ranch.

Healthy agricultural soils benefit from organic matter, biological activity, nutrient cycling, and better water-holding capacity. USDA's Natural Resources Conservation Service identifies those functions as important parts of soil health.

Eventually, livestock can become part of that cycle.

The basic idea is simple:

Animals produce manure → manure becomes compost → compost helps build soil → healthier soil supports plants → plants help support animals and people.

That's one of the principles we're interested in exploring as we move further into regenerative agriculture and livestock systems.

We're obviously starting on a very small scale.

But that's intentional.

We'd rather understand how these systems work with one compost pile before attempting to manage them across acres of land.

Compost Is a Soil-Building Tool

The end goal isn't simply to produce a pile of dark material.

We want compost that can help improve the ground where we're growing food.

USDA research and soil-health guidance recognize compost and other organic amendments as tools for increasing soil organic matter and improving nutrient and water cycling.

For a homestead like ours, that's particularly valuable.

We don't want every growing season to begin with buying another stack of bagged soil.

The long-term goal is to produce more fertility right here.

Horse manure is simply another resource that can help us get there.

What We're Learning From Our Compost

We're still experimenting.

That's an important part of this entire process.

We're not presenting our compost pile as the perfect recipe everyone should copy.

Different piles contain different materials.

Different climates behave differently.

Different types of manure and bedding can change the mixture.

What we're doing is documenting what happens on our property and learning from the results.

And in this experiment, adding horse manure was one of the changes that finally helped our compost pile come alive.

That's another small step toward producing more of our own soil and building healthier growing systems at Hideaway Homestead Ranch.