Subpod Is The Latest Composting System To Hit The Media. Here I Examine The Pros & Cons of Subpods

I’m all in favour of anything that encourages people to grow veg crops in the garden. So when I saw the advert for Subpod I was intrigued. SubPod claims to the best composting system I’ve ever seen, odour free, pest free, neighbour approved and with five-minute assembly.

It’s apparently simple, modular and modern and composts my kitchen and green waste by using worms and microbes to do the work. Ohh and it’s largely buried underground .. though I’m not terribly clear why that’s a benefit and not a disadvantage!

Subpods Claim To Be The Best Composting System You've Ever seen
Subpods Claim To Be The Best Composting System You’ve Ever Seen

And I do like the company’s vision of a world where composting as a part of everyday life. It already is in my family and has been for decades.


What Is Subpod?

Essentially Subpod is a plastic container, divided into two sections. The sides and bottom are perforated sufficiently to allow worms and smaller living creatures in and put but too small to let mice and rats in.

There’s a lid that seals the top and the whole thing is buried, or partially buried, in the soil or into a raised bed.

The dimensions of the Subpod are 75 cm long, 45 cm high and 43 high. So it’s not very big.

So the easiest way I can see of describing the Subpod is that it’s a smallish plastic wormery that is part buried when in use. The resulting compost can be used as a mulch, soil additive  etc.

Subpod Pros & Benefits

As I said earlier I like anything that encourages people to grow their own veg. And when they provide YouTube videos to explain the system I give them a vote straight away. That’s got to be positive.

Subpod Cons: Why I Hesitate To Recommend Subpod

OK, so the Subpod prevents smells. Smells in compost come from anaerobic conditions. No compost should go anaerobic or it will smell. The thing is no compost system that’s properly managed need go anaerobic. And in the video on starting the SubPod the commentator warns about putting too much compost in the Subpod at the start or it will turn the compost anaerobic and drive away the worms away.

That takes me onto it being easy to set up. Just five minutes it says. So in five minutes, you have to assemble the Subpod, dig a hole big enough for it, ensure its level, add the starter compost and the worms. That’s after buying the starter compost and worms as it doesn’t come with them. I’m not sure how long this is all going to take but it seems to me that it’ll be much slower than the five minutes claimed. Check out the video to see what’s involved and decide if you could do it in five minutes. I couldn’t.

Pest free is another issue I have with this product. I’ve seen a lot of feed bins on farms and in stables that claim to be pest-free. They are often made of plastic or metal and resist the rodents until they chew a hole in them. Even galvanised sheet metal succumbs to rats after a while. They just chew through it. So I’m not sure how the plastic SubPod is going to resist a rat or two!

And if the system is pest-free, why the video on cockroaches and ant problems? To me, a cockroach is definitely a problem!



Now let’s think a bit more about simplicity. I watched some of the videos which highlighted how the worms can be driven away by overloading the system and making it anaerobic, how the worms have to be removed from the bin that is to be emptied and, once done, how the compost needs to be lifted out to an exact predetermined level.

If the system is so simple why is there a video on … Tips for fixing overfed compost worms? If the instructions inside the lid of the bin were so easy to follow then mistakes wouldn’t happen. Of course, in life mistakes happen .. usually where systems aren’t as simple as claimed!


Then there’s the term “neighbour approved”. I’m not convinced that they have asked the neighbours. Did they ask you to approve it for your neighbours? To me, this is just a shallow, meaningless and trite claim that can’t be validated. It’s poor marketing and devalues the whole system by telling me something I know not to be true. How can it be a “neighbour approved outdoor composting system” when my neighbours haven’t been consulted?

Finally, there is the price.

Subpod Prices

According to the SubPod website the system is available as the basic plastic box, the box with an aerator (a large corkscrew type device) or as a Grow Bundle which is the plastic box, aerator and a grow bed (this looks like a raised bed to me). The Grow bed is slightly larger than the subpod and surrounds it. I couldn’t determine what its made from but I assume it is plastic as well.

Prices range from £179 for the basic plastic box to £299 for the full kit. I say full kit but of course there still the worms and starter compost to find, buy and install.


Subpod: Will It Sell?

According to the information provided 16,000 SubPods have already sold. And I’ve no doubt many more will sell. It’s the sort of product that appeals to gardeners that think its going to answer all their gardening problems.

Of course, it probably won’t solve all their problems and it’s going to cost a fair bit of money before buyers discover this. Certainly, there are positive reviews on the website. Positive reviews are always easy to find at the outset. I wonder how many of them will continue using it in a years time.

Personally, I’m going to continue using my conventional, aroma-free compost bins and save myself £299.

NB I’m delighted to have received a comment (below) from Peter at SubPod. We share many common beliefs in gardening and the need to compost. But I’m still to be convinced about expensive systems like this one.

If you want your gardening to be simpler why not join my Dig For Victory Facebook Group?




2 thoughts on “Subpod: Pros and Cons Of Using Subpods

  1. Stefan Drew says:

    Peter, I’m delighted to get a response from SubPod. The offers been on the table and, despite emails going back and forward with your team I wondered why no one had responded.

    Let me start responding to your points by firstly reiterating where we share common goals. It’s to get people gardening and composting. Personally I started gardening as a preschool child and went on to own a commercial salads nursery and teach horticulture at various colleges. So I’ve a lot of composting experience.

    Composting is a very simple and natural process. In fact it’s hard to stop it from happening and I believe we often make it too complicated by interfering with the natural process. In nature any like of organic waste is going to decompose. There are various chemical and biological processes involved that result in the breakdown of complex biological units into simpler units. It involves bacteria and fungi in the initial phases and produces heat. As it cools other organisms get involved, including worms, insects etc.

    The speed of decomposition depends on many factors, from moisture content, oxygen levels and temperature. Without oxygen we get anaerobic decomposition and that can smell. The higher the temperature the faster the breakdown and compost formation.

    You comment about the above ground systems being more susceptible to heating. Correct, they are, simply because that’s the natural way in which composting works. Heat is created by the chemical and biological process of decomposition.

    I’m not saying worm composting, ie composting without heat, doesn’t work. It does. But you are advertising a composting system where what you have is a worm composting system.

    In nature, and the garden, natural decomposition works extremely well with a simple pile of organic matter. There’s no need for bins or purchased worms etc. Worm compost however needs equipment, in your case made of many kilos of plastic. My experience is that if we follow nature’s method we can compost very efficiently at nil, or close to nil, cost. In my case I use a compost bin to retain the compost I make. Bins can be made very simply. For example a few pallets held together with string or wire can be made with recycled materials in minutes at nil cost. It’s a lot quicker than digging a bin into the ground or surrounding it with a plastic container that then needs to be filled with soil or compost.

    As for buying a SubPod to test what you are telling me I see little point in spending money on a composting system when the process can be done at nil cost. I’m prepared to test a system if supplied, but really don’t want to lay for the privilege!

  2. Hi Stefan,

    It’s great to hear you’re enthusiastic about getting people into gardening and composting, that makes two of us.

    My name is Peter, and I’m the person in the subpod videos above.

    I completely agree, any composting system should not smell if it’s managed correctly. However, from my experience, above-ground systems are harder to manage. This makes them more likely to go anaerobic (smelly)

    The key difference I see with underground and aboveground composting is;
    Above-ground systems are more susceptible to heating and loss of moisture. This means, more oxygen gets used up and the system can slip into an anaerobic phase. Of course, you can help manage this by aerating it, keeping it moist and adding more carbon. But for some people this is a lot of effort… so they end up stopping composting completely.

    Have you tried underground composting?

    Of course, I’m totally biased, but it really is a lot easier. The fact that it’s underground means the worms are able to breed and eat faster. This allows you to compost more, in a shorter amount of time.

    There’s also no resting period, as you would have with a compost pile, where you would wait (1-3 months), until the compost is cured

    I can easily compost 10-15kg of foodwaste in a Subpod weekly. From my understanding, there isn’t another worm farm that can do that weekly capacity.

    The video you posted above about simplicity. Sorry, I’m not sure, how you got to the “overloading the system and making it anaerobic” the idea is to stop feeding one side and load it up with carbon while continuing to feed the other side so they migrate across. Maybe it was my explanation, if so, sorry about that.

    As for the price, I’m sorry if that seems overpriced for you, but the weight of Subpod (10.3) kg and size, means the manufacturing and shipping costs of a Subpod is expensive. As an Australian startup company, we are trying our best to make composting with Subpod affordable.

    Have you researched other large compost systems, as most of them are at a similar price if not more?

    Sorry for the wall of text 😅 I’m happy to jump on a call if you have any questions.. or if you would like to try a Subpod so you can share your feedback after some first-hand experience.

    It’s great to hear you’re already composting, as that’s our real mission here, to get people composting, no matter what style… I hope we can agree on that!

    Happy composting.

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