If you’ve been Googling “best soil for pothos” and ended up on a Reddit thread with seventeen different opinions and a recommendation for a $40 boutique aroid mix, I understand. It’s a lot.
Here’s the short version: Pothos genuinely do not care that much. The long version is this article.
What Pothos Actually Need From Soil
Pothos are an invasive species in large parts of the world. They grow through tarmac cracks in Florida and strangle trees in Hawaii. The idea that they need a carefully curated substrate is a little bit silly.
What they do need is soil that can do two things at once: hold enough moisture for the roots to drink from, and drain well enough that those same roots aren’t sitting in a swamp. That’s it. That’s the whole brief.
Any mix that ticks both boxes will grow a happy Pothos. The question isn’t “what’s the perfect soil?” — it’s “what works for the way I actually water?”
The 3:1:1 Starting Point (If You Want One)
If you’re repotting and want something reliable, a 3:1:1 mix of standard houseplant potting mix, perlite, and orchid bark is a solid place to start. Alternatively, a 3:2 ratio of potting mix to perlite or bark works well too.
The potting mix gives you moisture retention. The perlite and bark create air pockets and improve drainage. Together, they’re forgiving of both the “I forgot to water for two weeks” crowd and the “I water every time I walk past it” crowd.
You don’t need to measure anything. It’s soil, not a cocktail.
Adjust For How You Actually Water
The best soil for your Pothos depends on you, not just the plant.
If you tend to underwater — if you forget, if you’re busy, if your plant is in a cooler room where soil takes ages to dry out — go heavier on the coir or potting mix. More moisture retention gives the roots something to work with even if you’re watering a touch too often.
If you tend to overwater — if you check the plant daily, if you find it hard to leave it alone —add more orchid bark or perlite to your mix. Better drainage means the soil won’t get waterlogged in the gaps between waterings.
Soil is a tool; an ally (I’ve never typed that word before; I feel like it’s spelt wrong).
Use it to compensate for your habits.
My Current Mix (A Cautionary Tale About Reading Too Much)
My Pothos is currently living in what I can only describe as a horticultural science experiment.
The mix contains LECA, perlite, coir, worm castings, houseplant potting mix, orchid bark, and probably some horticultural charcoal — all in the same pot. It started as “using up what I had left over” and evolved into something I’d struggle to replicate.
This is not a recommendation. This is evidence that these plants have an aggressive indifference to substrate composition, as long as the fundamentals are there.
Does “Pothos Mix” Mean It’s Good For Pothos?
No. Don’t fall for the propaganda.
Bagged soil products with “pothos mix” or “aroid mix” on the label aren’t automatically well-suited to your plant. The label tells you what the manufacturer thinks the product is for. It doesn’t necessarily tell you the drainage characteristics, the moisture retention, or whether it’ll suit your watering style.
Some aroid mixes are excellent. Some are dense and water-retentive in a way that suits a moisture-loving plant but not a Pothos in a low-light corner. I use an alocasia mix for hoya because the composition happens to be exactly right for my situation.
Read the ingredients before you buy, not just the label. If it’s heavy on peat or coco coir with no added drainage, that’s a mix for underwaterers or pothos in full sun. If it’s chunky with bark and perlite, that’s for your overwaterers and low light Pothos.
What To Avoid
Soil from your garden.
Garden soil is designed for outdoor conditions — it retains far more water than a houseplant needs, compacts over time in a pot, and brings with it every pest, pathogen, and weed seed currently residing in your garden. Leave it outside.
Anything food-related.
Vegetable compost, fruit and vegetable mixes, composted kitchen scraps — these will absolutely grow a Pothos. They’ll also grow a spectacular population of fungus gnats. Gnats are not a pothos care feature.
Don’t do it.
You’ve been warned.
Please please fertilise your Pothos with actual houseplant fertiliser.
Specialist mixes that don’t suit your watering style.
An ultra-chunky, bark-heavy aroid mix might be perfect for someone who waters frequently in a bright room.
If you water every ten days and your plant is in a north-facing window, that same mix will dry out so fast the roots never get what they need. The “best” mix is the one that matches how you actually behave.
Can You Reuse Old Potting Mix?
The standard advice is no — old potting mix breaks down over time, loses structure, and can harbour pathogens.
The standard advice is also slightly precious.
I reuse old potting mix, especialy if I’m repotting because the Pothos is just, e.g. rootbound. I’ll use it until it turns to dust.
If you’re repotting because of root rot, use fresh mix. If you’re repotting because the plant has outgrown its pot and is otherwise doing well, use that old soil
What About LECA, Water, and Other Substrates?
Pothos can grow in LECA (lightweight expanded clay aggregate), in water, and — famously — in nothing but a vase on a windowsill (or even an aquarium). Each of these is a different system with different watering and feeding rules, and they’re covered in their own articles:
FAQ
What is the best potting mix for pothos?
A 3:1:1 mix of houseplant potting mix, perlite, and orchid bark is a reliable starting point. Standard houseplant potting mix on its own is also perfectly workable — add perlite if you tend to overwater, or if your Pothos is in a bright spot and dries out quickly.
Do pothos need special soil?
No. “Pothos soil” or “aroid mix” products aren’t necessary. What Pothos need is well-draining soil that also retains some moisture — most standard potting mixes meet that bar, especially with a handful of perlite mixed in.
Can I use cactus mix for pothos?
You can, but straight cactus mix tends to drain too fast for Pothos, which like a bit more moisture retention than a succulent does. Mixed with some standard potting mix, it works well.
If you’re an overwaterer, it could be perfect.
Can I use garden soil for pothos?
No. Garden soil compacts badly in pots, retains too much water, and carries pests and pathogens. Use a houseplant potting mix instead.
Should I add perlite to pothos soil?
It helps, particularly if you tend to water frequently or if your plant is in a lower-light spot. Perlite improves drainage and aeration without affecting moisture retention much. A small handful per pot makes a meaningful difference.