Homemade Potting Soil Recipe (2024)

(Pssst. This post is from 2015. I’m not pregnant anymore.) 😉

I’m back from the dead.

Or at least that’s what it feels like, especially if dead = first trimester.

That’s right, there’ll be a new Prairie Kid on the homestead come October. (Pssst. This post is from 2015. I’m not pregnant anymore.)

The funny thing about me and the first trimester (actually, funny really isn’t the right word…) is that my personality pretty much completelychanges…

I go from this hyper-motivated, homesteading, business-running, gardening, cow-milking mama who loves life and loves activity, to someone who really doesn’t care about much of anything, can’t open the refrigerator without dry-heaving, and can barely get off the couch.

Soyeah, it’s safe to say there wasn’t much from-scratch cooking happening in my kitchen these last few months. Which explains the lack of recipes here on the blog. I don’t even want to tell you what I’ve been eating. It’s all-about survival-mode, baby…

BUT, I’m officially 14 weeks and I think I’ve finally turned the corner. And let me tell ya, I’m ready to roll off the couch and get back to being my hyper, dig-in-the-dirt, cooking-up-a-storm self.

And what better way to celebrate finally feeling better, than… homemade potting soil. Am I right?

I’ve always kinda cringed when I’ve thrown those green and yellow bags of potting soil in my shopping cart at the garden store. I figured there was a better way, but never took the time to figure it out… Until now.

Thankfully, my homemade potting soil recipe is pretty darn easy to throw together. And it’ll save you some $$ too.

Why These Ingredients for My Homemade Potting Soil Recipe?

Truthfully, mixing your own homemade potting soil recipe isn’t rocket science, and there are plenty of ways to make it happen. A good potting mix will:

  • Be firm enough to support the plant
  • Be light enough to allow air/water to flow with minimal compaction
  • Be free of weed seeds and potential pathogens

But here is why I chose the ingredients I did:

Coconut Coir: Many DIY potting mix recipes call for peat moss, but since there is so much debate regarding mining from peat bogs, I decided to steer clear of it and opt for coir instead. Coconut coir is a by-product of the coconut-processing industry, and is basically ground-up coconut husk fibers. It is a fantastic choice for soil-less potting mix, as it retains water beautifully. I got mine in a big brick, and had to soak it in water before it was ready to use. You can substitute it 1:1 for peat moss in potting soil recipes

Perlite: Perlite is a lightweight volcanic rock. It holds water and helps to aerate the soil and keep it from compacting. Some people also use vermiculite or plain ol’ coarse sand in place of perlite in homemade potting soil recipes, too.

Compost: Well, you know what compost is, so I really don’t have to explain this one. Compost adds nutrients to the soil and it’s usually pretty much free if you make it at home yourself. Just make sure to use finished compost to avoid “burning” your plants or introducing weed seeds into your pots. Also, I used the finest compost I could find in my pile– you may need to sift yours if you have chunky stuff. Worm castings are another great option here.

What about Dirt?

Sorry… I meant to say soil. (I always get at least one reader correcting me when I call it dirt instead of soil.) 😉 You can absolutely use regular ol’ soil in your potting mix, and many folks do. However, it’s advised to sterilize the soil first, to eliminate weeds and potential pathogens. This can be accomplished by baking the soil at 200 degrees in your oven.

Why didn’t I do this? Because I could only imagine the mess I’d make trying to bake 10 gallons of dirt (er… soil) inside my kitchen… It just didn’t sound like fun, so I opted for coconut coir instead. Also– using straight soil in your pots can open you up to issues with compaction. So, even if you *do* decide to use sterilized soil, make sure to add some sand or other lightener in there, too.

Homemade Potting Soil Recipe

(this post contains affiliate links)

*a “part” can be anything you like– a measuring cup, a coffee can, a five-gallon bucket, etc. It just depends on how much potting soil you want to make.

If your coir came in a block, you’ll need to hydrate it.

I did this by allowing the coir “brick” to sit in water until I was able to break it apart. I then added more water until it was easy to flake apart in my hands and very moist.

Next, mix the coir and compost. Add more water if you need too– I found it much easier to handle/mix if the mixture was damp.

Add in the perlite, give it a stir, and you’re ready to go!

Use your Homemade potting soil recipe like you would store-bought mix.

DIY Potting Soil Recipe Notes:

  • Keep in mind this recipe is super flexible and lends itself well to substitutions. In some of the other recipes I’ve seen, people substituted sterilized soil or peat moss for the coconut coir, vermiculite or coarse sand for the perlite, and all sorts of different fertilizers (kelp meal, bone meal, blood meal, worm castings) for the compost.
  • This stuff is mucho easier to mix if it’s damp.
  • How does it compare in price?I paid $15.96 for an 11-lb brick of coconut coir in Amazon and $16.70 for a bag (18-quarts) of perlite. My local garden stores are pretty dismal when it comes to specialty ingredients, so it was unlikely I could have found those things here. The compost was free.Considering I only used a fraction of my ingredients for my first batch, they should last me for a while… And if you substituted coarse sand or sterilized soil, this homemade potting soil recipe would be even cheaper.

More Gardening Tips:

  • 7 Simple Ways to Improve Garden Soil
  • What We Learned by Having Our Garden Soil Tested
  • How to Make Compost Tea
  • How to Test Seeds for Viability
  • How to Disinfect Seed Trays

Homemade Potting Soil Recipe (2024)

FAQs

How do I make my own potting soil? ›

A mixture of 70% garden soil and 30% organic matter creates a good general potting mix for planting up trees, shrubs, perennials and fruit. If your garden soil is heavy, reduce the soil content by around 10% and add some sharp sand, grit, or bulky organic matter in its place to improve drainage.

What is the formula for potting mix? ›

Common Recipes

For a potting mix: 1 part peat moss. 1 part perlite. 2 parts compost.

What is the best soil mix for potted plants? ›

Most gardeners make potting soil by combining perlite or vemiculite with peat or sphagnum moss. Two other organic materials that you could add to your potting mix are leaf mold and compost, which offer a wide spectrum of nutrients.

Is it cheaper to make your own potting soil? ›

Before we go any further, note that if you only need a few small containers' worth of potting mix, you may actually be better off buying a pre-made mix! Making your own is usually only economical on a large scale.

Is there a difference between potting soil and potting mix? ›

Both potting mix and potting soil have their unique strengths—potting mix is great for providing superior drainage, while potting soil is nutrient-rich due to its composition, for instance. Here's when to use each growing medium.

What is the main ingredient in potting mix? ›

Potting soil, also called potting mix, is a blend of materials like sphagnum moss, bark, perlite, vermiculite, compost or coir that's intended for growing plants in containers. Guess what it doesn't have? Soil. That's because soil can carry fungus and other plant pathogens that can infect your plants.

What soil is best for flower pots? ›

What is the Best Soil for Container Gardens?
  • Sphagnum Peat Moss: It helps hold water moisture and improves aeration.
  • Perlite and Vermiculite: They add air space to the soil for better root health. ...
  • Compost: It provides organic material for your plants containing essential nutrients.

What is in 3 in 1 soil mix? ›

3 in 1 All-purpose soil mix: A blend of Peat Moss, compost and humus. It is an optimized blend to blend into existing soils or to use on its own when planting lawns, flowers, shrubs and trees.

How to prepare soil for planting flowers in pots? ›

Combine two parts compost with one part coconut coir and a little perlite for drainage (about two handfuls per 45 liters). You can add another two parts or less of worm castings for plants that require a lot of nutrients as well as a mycorrhizae starter.

How to cheaply fill a large planter? ›

Try these eco-friendly lightweight planter filler options made from everyday household items.
  1. Plastic water and soda bottles.
  2. Unused nursery pots.
  3. Non-dissolvable packing peanuts.
  4. Old pool noodles.
  5. Clean foam take-out containers.
  6. Styrofoam packing materials.
  7. Aluminum soda cans.
  8. Pine Cones.

How long does homemade potting soil last? ›

For unopened and unused potting soil, you can store it for about a year or two before it goes bad. Usually, potting soil lasts longer when stored in a dry and cool container.

Can I use dirt instead of potting soil? ›

As we say here at The Dirt Bag, always use potting mix in your pots and garden soil in your garden. Potting mix is meant to stand alone, as opposed to being mixed in with existing soils. It is a self-contained product designed to provide potted plants with everything they need to grow and thrive.

How do I make my own living soil? ›

To create living soil, simply mix one part sphagnum peat moss, one part perlite or pumice for aeration, and one part compost. If you don't want to use perlite or pumice, you can also use lica or hydroballs, which are expanded clay pellets that do the same thing.

How do you use garden soil as potting soil? ›

Garden soil with a little organic matter or potting soil mixed in is a good choice. Never use garden soil alone for containers. It will compact too quickly, retain too much water, and restrict drainage and aeration. You can mix it with a high quality potting soil or potting mix for containers.

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