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

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*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

Homemade Potting Soil Recipe? ›

Add one gallon of moist, coarse sphagnum peat moss, followed by one gallon of coarse sand, perlite, or vermiculite. Adjust the texture of the medium to create a loose, well-drained mixture. Sand feels gritty and clay feels sticky. If the potting soil feels too sandy, more peat moss should be added.

What is the ratio for homemade potting mixture? ›

For a potting mix:
  1. 1 part peat moss.
  2. 1 part perlite.
  3. 2 parts compost.

How do you make homemade potting soil? ›

Add one gallon of moist, coarse sphagnum peat moss, followed by one gallon of coarse sand, perlite, or vermiculite. Adjust the texture of the medium to create a loose, well-drained mixture. Sand feels gritty and clay feels sticky. If the potting soil feels too sandy, more peat moss should be added.

How to make DIY potting soil mix at home for a fraction of the cost of store bought mix? ›

One homemade recipe that mimics quality retail potting mixes is a mixture of:
  1. 50 percent coir or peat moss.
  2. 25 percent finely chopped bark.
  3. 25 percent perlite.
  4. a small amount of organic fertilizer or timed-release fertilizer.

What is the best soil mixture for potted plants? ›

The best soil for potted plants will contain a blend of coconut coir fiber, vermiculite, perlite, organic fertilizer, sand, compost, and peat moss and is rich in basic nutrients required by the plants. It should be well aerated and should be able to retain moisture and nutrition well.

What is the number one potting mix? ›

We recommend Roots Organics Original Potting Soil as the best potting soil for outdoor plants because it works for all potted plants, from seeds and flowers to trees and vegetables, using enriched nutrients that allow for optimal drainage. One of our favorite features is that the bag is ready-to-grow.

How do you calculate potting soil? ›

We can use the potting soil formula to estimate your needed soil.
  1. First, you need to get the dimensions. Let's assume you are using rectangle pots, 5 of them, to be precise. ...
  2. Using the formula: Soil = Volume of pot × Number of pots. ...
  3. Substitute in the known values: Soil = 24 × 18 × 10 × 5.
  4. So: Soil = 21.6 liters .
Apr 9, 2024

What is the main ingredient in potting soil? ›

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.

How long does homemade potting soil last? ›

Most potting soil can be stored 1-2 years without spoiling if stored properly, but its nutrients will still degrade. So, yes, of course you can use old potting soil, but it will not provide the same results that new, nutrient dense potting soil will.

How to make easy potting mix? ›

Regular Potting Mix
  1. One part composted pine bark.
  2. One part mature compost, worm castings or mushroom compost.
  3. One part perlite.
  4. Add a handful of garden lime or dolomite per ten litre bucket of mix.
Jun 26, 2019

How do you make cheap super soil? ›

Ingredients:
  1. 14 cubic feet of high-quality potting soil.
  2. 1 cubic foot worm castings.
  3. 2.5 lbs. bone meal.
  4. 2.5 lbs. fish bone meal.
  5. 5 lbs. high phosphorus bat guano.
  6. 5 lbs. blood meal.
  7. 3 cups oyster shell.
  8. 3 cups kelp meal.

What are the ingredients in Miracle Grow potting mix? ›

Miracle-Grow Potting Mixes contain a blend of sphagnum peat moss, aged bark fines, perlite, plant food, and a wetting agent. Miracle-Grow Moisture Control Potting Mix also contains coir (coconut husks) to help protect against over and under watering.

What's the difference between potting soil and potting mix? ›

Potting soil may or may not contain soil, while potting mix is strictly a soilless medium.

What is the ideal ratio of component in a good potting mix? ›

To create your own perfect soil mix, thoroughly blend 1 part peat or coir, 1 part perlite or vermiculite, one-half part composted bark, and one-half part worm castings. You can grow just about any crop in your indoor garden with this mix.

What is the composition of potting mixture? ›

It typically includes ingredients like: Peat moss: Aids moisture retention. Pine bark: Improves soil air space. Perlite: Decreases soil density and improves water drainage.

What is the ratio of sand to potting mix? ›

For many plants, a good soil-to-sand ratio to start with is 4 or 5 to 1. Because sand is added to enhance drainage, coarse sand works best. Sand sold for kids' sandboxes is often too fine. Also avoid using beach sand because its high salt content can be harmful to plants.

What is 5 1 1 potting mix? ›

The 5-1-1 mix is made up of 5 parts bark, 1 part potting soil or peat moss, and 1 part perlite.

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