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Compost White

Why choose Subpod?

Your waste is a powerful thing. This year, you’ll send roughly 150kg of food waste to landfill, where it will fuel global methane emissions and climate change. Turn your waste into a rich, nutritious fertiliser that feeds the soil instead! Compost up to 20kg of food waste a week in Subpod. Mess free, smell free and easily maintainable in just 5 minutes a week, Subpod is the compost system for people who love simple.

What is Subpod?

Subpod is an in-ground worm farm. Above ground compost systems are often difficult to maintain and attract pests. Worm farms that are above ground can also fail when they get too hot or cold – but not Subpod. Subpod sits 90% below the soil level in your garden, so the compost worms that live inside can come and go freely (nourishing the soil directly). The soil insulates your compost and protects your worms from harsh weather, so you can keep composting no matter the season!

The Subpod is designed to deal with common issues associated with traditional composting:

  • It’s aerobic, using odourless microbes to speed up the composting process

  • The ventilation panels keep it smell-free with fresh air

  • It doubles as a garden seat, subtly hidden amongst your plants

Compost worms live in Subpod like they would in nature. Underground, they compost in the dark, protected from harsh weather conditions and direct sunlight. Fresh air circulates through Subpod via the ventilation panels, which helps aerobic (odourless) microbes speed up the composting process. 


As the worms and microbes breed, they explore the soil, taking particles of compost with them and boosting fertility through the garden bed. Soil is an insulator, it protects the worms in hot weather and gives them a cool place to escape to. When it's cold, the soil traps heat in Subpod and keeps the worms active during winter – so you can compost all year round. 

The Green Cities team believe this is the future of sustainable living and a must-have in every home garden. Plus, it's possible for everyone to experience the benefits of Subpod with many sizes available, suitable for large yards, small yards and balconies. 


Subpod was founded and is based in Byron Bay, Australia.

What Is Subpod?
Subpod Mini - Mar Garcia aerating her compost 2 - Photo by Luca Fox.jpg
3 Key Features

No smell, no pests.

Compost issues are a thing of the past. Subpod’s patented design lets fresh air flow in, helps ‘good smelling’ microbes thrive and keeps pests out.

Neighbour approved.

Subpod’s the only neighbor approved outdoor compost system! Its odourless, in-ground design is so subtle they’d never guess you compost.

5 minute assembly.

Our simple flat-pack design clicks together in five minutes. No tools required, just fold your Subpod out and click the lid into place.

3 Key Features
Subpod For Everyone

From small homes to large commercial developments, Subpod is turning food waste into rich organic compost in an easy to use, smell-free and aesthetically pleasing manner.

 Subpod Classic 

Subpod Classic is an incredibly efficient and innovative, food waste fighting underground pod. The only "3 in 1" – compost system, worm farm and garden seat. Chosen by over 20,000 families, cafes, businesses, schools, residential/commercial developments and community groups around the world. It's innovative design is smell free, mess free and stress free!

 Subpod Mini 

Subpod Mini is made to make composting fun, simple and more accessible than ever. Designed for smaller households and inner-city living, Subpod Mini rests below ground, taking up very little space. The lid is subtly visible above ground, doubling up as the perfect garden seat! Composting with Subpod Mini is stress-free with all the basic instructions you need to get started right there on the lid.


Divert waste, grow food and do something great for the planet – with Modbed, the garden pod designed for urban living.

Never before has growing food and composting in the city been this easy and attractive. We're making composting a part of everyday life for anyone living in an apartment or compact space.

If just 1% of us living in cities start composting, it'll have the same impact as turning New York, Tokyo, London, Sydney and Chicago into forests! Help us make it happen. Turn your concrete balcony into a living, waste saving eco-system and experience the joy of growing your own food and herbs.

 Grow Bag 

Grow Bag is an instant garden bed – unpack, unfold, and you’re ready to plant! Pair with a Subpod Mini for the ultimate lightweight composting and gardening experience. With the Grow Bag you can create a cost-efficient garden of any size that can easily be rearranged & taken with you anywhere! Grow bag is the flexible garden option suitable for any project.

Subpod Compost in use
Subpod For Everyone
How Subpod Works.jpg
Compost Underground

Compost worms live in Subpod like they would in nature. Underground, they compost in the dark, protected from harsh weather conditions and direct sunlight. Fresh air circulates through Subpod via the ventilation panels, which helps aerobic (odourless) microbes speed up the composting process. As the worms and microbes breed, they explore the soil, taking particles of compost with them and boosting fertility through the garden bed. Soil is an insulator, it protects the worms in hot weather and gives them a cool place to escape to. When it's cold, the soil traps heat in Subpod and keeps the worms active during winter – so you can compost all year round.

Subpod in 4 Simple Steps

Step 1: Put your food waste in Subpod and aerate your compost to speed up the next step.

Step 2: Worms and microbes go to work, breaking down your food waste into worm castings (compost).

Step 3: Ventilation and aeration keep your system smell-free while the composting process happens.

Step 4: You can harvest your compost and use it as fresh organic fertiliser for your plants!

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Find out more about your new hobby.

We've assembled a range of informative blog articles that you may like to read over as you begin your composting journey.

Peter Critch with a big handful of worms from the Subpod at The Farm, Byron Bay, Australia
Compost Underground


Ashlie Thomas

"Composting just got a bit more efficient! I highly recommend this... I'm looking forward to some really good harvest"

Damon Gameau

"Subpod is one of those wonderful solutions that if enough people implemented this change it would have an enormous impact on our planet"

Courtney Adamo

"It's the easiest system you can imagine, even the kids know how to churn the worms"

  • How does Subpod differ from other worm composting systems?
    ● It allows you to compost directly in your garden allowing the worms and microbes to distribute nutrients into the soil. ● Because you’re composting in the soil, your system is insulated → which means you can compost in a variety of climates ● Subpod sits 90% below ground, which deters pests and predators ● The worms are able to move freely between the Subpod module and the surrounding garden which creates a worm friendly environment. ● The Subpod has a unique modular design, which allows multiple systems to be installed in one bed and cater to larger volumes of waste.
  • How many Subpods do I need?
    ● The average family generates 7kg (15lbs) of food waste a week, just for reference. ● We have designed the Subpod to be used for a family of up to four people, processing around 15kg (33lbs) of organic waste per week. ● It will take from six weeks to three months to get your Subpod working at this capacity, depending on the season and how much you feed it. The worms need to settle in and build up their numbers. ● Subpod is modular, so if you have more than 30L/15kg of waste per week, you can choose to connect two or more Subpods and create a bench seat, or install in separate garden beds.
  • How much food waste can be processed in Subpod?
    Once your worm population builds up you can feed your Subpod 30L (7.9 gal.) or 15kgs (34 lb) of food waste per week. This can be optimised for higher performance, and we go into detail about this on our website and support videos.
  • Subpod: What are the dimensions/specifications and capacity of the Subpod?
    ● The external dimensions are: 750mm (29.5 in.) L x 450mm (17.7 in.) W x 430mm (16.9 in.) H, including the lid. The internal dimensions are: 710mm (28 in.) L x 410mm (16.1in.) W x 290mm (11.5 in.) H below the soil level. ● A total internal volume of 115L, (30 gallons), which gives a total composting volume of 84L (22 gallons) due to the soil level and air flow area at the top.
  • Grow Garden Bed: What are the materials and dimensions of the Subpod Grow Bed?
    ● The Subpod Grow Garden Bed is made from steel with a zinc & aluminium alloy coating that is robust and anti-corrosive, designed for all weather conditions ● Dimensions 120cm long x 90cm wide x 45cm high. 17.7” H x 47.2” L x 35.4” W ● The Subpod Grow Garden Bed has an open bottom designed to sit on soil, sand, grass, etc.
  • Grow Garden Bed: How much and what type of soil is needed for the Grow Bed?
    ● For the Subpod Original in a Grow Bed, after subtracting the volume occupied by the Subpod, you'll need 0.35 cubic meters of soil/ 340 litres of soil, or 7 x 50 litre soil bags. ● For the Subpod Mini in a Grow Bed you need 12.8 cubic feet or 363 litres of soil. This is about 7 bags of the 2 cubic foot size bags or in metric, is 8 x 50 litre bags. ● If you’re growing vegetables in your raised garden bed, use a premium grade soil, not potting mix. Potting mix is designed to hold a lot of water, but for a raised garden bed it’s better to have well-draining soil with some good organic matter and nutritional content to get you going. ● It is also a good idea to put mulch on top of your soil to allow the worms to travel safely and protect the soil from drying out, etc.
  • Aerator: What does the aerator do?
    The aerator helps to mix the waste through the Subpod so that it is processed faster by the worms and microbes. It also helps to aerate the system so that it’s an aerobic environment, which means a non-smelly composting system.
  • Worm Blankets: Does the Subpod come with worm blankets?
    Yes, Subpod comes with two worm blankets, one for each of your compost bays on each side of the divider.
  • Worm Blankets: What is a worm blanket? What is it used for?
    Worm blankets are made of a water-absorbing, air-permeable and light blocking fabric. They are placed on top of the worm bedding and have multiple functions: The blanket minimises light reaching the worms, allowing them to feed right up to the top of the compost day and night. Moist blankets prevent the upper layer from drying out, which can attract ants into the system Moist blankets help maintain the proper moisture levels for the worms. Worm blankets maintain warmth within the Subpod during winter months.
  • Help! How do I get started?
    The Official Subpod website has a free online course that will walk you through everything you need to know to get started Getting Started with Subpod
  • Planting Your Subpod in a Raised Garden Bed:
    You need a hole that is 85cm L x 55cm W x 32cm D (33in. L x 21in. W x 15in. D). That’s around 8-10cm (3in.) longer and wider than Subpod. It’s important that the top Airflow panels are above ground.
  • Planting Subpod directly into the ground:
    Subpods can work buried into the ground but we recommend raised gardens beds for ease of use and installation. Be mindful of the soil around the Subpod - if it is heavy soil it can be difficult to plant it and the worms won’t have such easy access to the soil. Here’s a short video to show you have to install your Subpod in the ground:
  • Does Subpod need any maintenance?
    ● When you add your food scraps and carbon material to the Subpod, you'll need to mix them through using an aerator. This takes a few minutes each time you feed the worms. ● If the soil surrounding Subpod settles and starts to reveal the Subpod wormholes (beneath the airflow panels), more soil (and mulch) needs to be added to cover the holes. ● Otherwise, just keep feeding your worms and keep the blanket moist when you are adding more food.
  • Why is there a divider in the Subpod?
    The Subpod Divider has a number of functions: ● Less disturbance to the worms. If adding food waste frequently (every one or 2 days), alternating sides minimises disturbing the worms. ● Collect your compost. When the system is getting full, stop feeding one side. After two weeks, most of the worms will migrate to the fed side once they have finished composting the waste on the unfed side. This allows easy harvest of the castings from the unfed side without having to separate worms. ● Compost onions, citrus and spicy foods on one side to off-gas, allowing the worms to migrate to the other side if the oils in these foods are still a little strong for them. ● The support stay that props the lid open fastens to the Subpod Divider, so the lid won’t slam shut while working in the Subpod.
  • How and when to harvest the compost/castings
    ● After 2-3 months or when your Subpod is full, you can harvest your Subpod compost. ● To do this, feed only one compost bay until all the worms migrate to that side. You can then scoop out your finished compost from the other bay after two weeks, and begin the process again. ● Unlike other compost systems, you don’t need a resting period to collect your compost. By alternating bays, you can keep feeding your system as you collect your compost.
  • Subpod Compost Harvesting Ideas
    Sunlight Method: Mound compost from the Subpod into piles on a tarp or place into a bucket and let them sit in a bright location for a few minutes. The worms will move to the centre and bottom of the pile or bucket to avoid the light. You can then harvest the castings on the top layer and as the castings are removed, the newly exposed worms will head to the bottom out of the light and the process can be repeated until you are left with a concentration of worms. These worms can be returned to Subpod and the castings you harvested can be used in your gardens or made into liquid compost juice for your plants. Migration Method: Stop adding new food to one side of the divider in Subpod. Keep feeding the other side. After the worms have eaten the food on the old side they will begin to migrate to the side you are still feeding. Eventually, you will be able to harvest the old side.
  • Harvest as you Compost:
    You can also grab some castings from Subpod any time you plan to plant seedlings or make a liquid fertiliser - just open the lid and take out a handful or two of the dark soil looking castings and leave any larger items behind for the worms to keep eating.
  • Do you have to reintroduce new worms after you empty the compost?
    ● When you empty your castings and compost, the worms will not be with the castings, but where the food is, on the other side of the Subpod divider. ● When the system is getting full, stop feeding one side. After two weeks, most of the worms will move to the other side where the food has been added. This allows for easy harvest of the castings from the unfed side.
  • How much garden area is being enriched/serviced by the Subpod?
    There are three ways your garden area is being enriched by the Subpod from nearby to to intermediate distance to as far as your garden extends: ● worms: As the worms move through the walls of your Subpod, they will gradually improve the soil in the immediate region around the Subpod. If the soil is well mulched, this encourages the worms to move more frequently and further from the Subpod. This will condition the uppermost region of soil gradually through a whole raised garden bed with several growing seasons. ● plants: The roots of plants grown around the Subpod will find their way through the below ground worm holes and draw from the compost directly. These plants will grow very vigorously and that root region will improve the soil structure deeper into the growing bed than compost worms typically travel. ● people: Spreading the compost castings from the Subpod and sprinkling liquid extracts of the compost casting will allow the nutrients to cover the widest possible area in the shortest time possible.
  • What can be composted in Subpod?
    You can compost a lot more in Subpod than in other worm farm systems. You can compost food scraps, including citrus, onions, and after four months of active use, even small quantities of meat, fish, dairy, and spicy foods. Carbon items such as paper and cardboard, lawn and garden clippings, and a whole lot more can be composted in Subpod. You CANNOT compost non-organics such as plastic, tin cans, cigarettes, and such.
  • Does my food waste need to be broken up into small pieces before adding to the Subpod?
    ● You don’t need to chop everything up small for the worms, but it does speed up the process so your food will break down even faster. ● Composting will still take place in the warm, moist environment if you put in larger chunks. The worms will just wait until the microbes have softened up the more resistant pieces. ● Remember to use the aerator when you add food so larger chunks are sent below the surface to break down, rather than drying out.
  • Can I compost commercially compostable food packaging?
    ● We’ve been experimenting with different compostable packaging and at the moment we are finding they are taking a while to break down, probably due to the Subpod composting system being more of a cold composting/worm system rather than a hot composting system. ● While looking up the specifications of home composting and how long it takes, 12 weeks to break down is acceptable for home composting bioplastic. We're just used to things breaking down super quick in Subpod! ● Time-frames will vary, and depend on the strength of your Subpod, so you’ll need lots of worms and microbes to break everything down quickly and efficiently. Torn bags will allow oxygen, microbes and worms to get to work more efficiently. For any brand of compostable product, look for the icon that shows “Home Compostable” which will not require an industrial process (usually high heat) to compost. An important thing to note is that if it’s not certified, it probably hasn’t been tested and may not break down in your Subpod.
  • Type of worms and where to get them:
    In nature, composting worms live in the top layer of a forest floor, which is high in organic matter. In other words, they need high amounts of organic matter (your food scraps) to thrive. Tiger worms or red worm (Eisenia foetida) and the Indian blue worm (Perionyx excqvatus) are the best compost worms for Subpod.
  • Where do I buy composting worms?
    ● Generally, compost worms can be bought from worm farmers, plant nurseries, community gardens or home hardware stores. If you can source locally grown worms they are more likely to be adapted to your environment. There are also worm suppliers online. It’s safe for worms to be mailed through the post and they are fine in transit for four to five days with no hardship. ● Tip: If you can pick them up yourself using your own container/bucket you are more likely to get a good number of worms as mailing them can be costly by weight.
  • How many worms do I need per Subpod?
    You'll need a minimum of 1000 worms, but 2000 is better. When you order worms your supplier will most likely be selling worms in lots of 1000. If you really want to kick start your Subpod, you can add up to 4000 worms.
  • What material do you recommend for the worm bedding in the Subpod?
    The ideal material for worm bedding is coconut coir. It holds water very well, which keeps the worms moist, can be a food supply for your worms and is also a good carbon source. Dried bricks are easily purchased in the gardening section of garden stores such as Bunnings and Stratco. If fine and coarse forms are available, choose the fine. Follow the directions on the pack to pre-soak the coir with water until it has fully swelled and is uniformly damp, but not dripping wet. The worms can be directly added on top of this pre-moistened bedding. To save money, shredded (non-glossy) paper or newspaper is another option, but not as ideal for initially setting up bedding as it clumps together when wet. Any carbon material can be used as long as it is damp.
  • Worms gone missing. My worms have disappeared!
    It’s common for some people to have their worms vanish in the first week, and there’s an easy solution to help you get them back into your Subpod. Can’t find your worms don’t panic Feeding the worms What I can feed my Subpod
  • Does Subpod attract pests and rodents?
    ● No it shouldn’t. Subpod’s built-in ventilation panels have small holes that keep out bugs, pests and rodents, whilst allowing air to flow in. Just make sure the ‘worm holes’ in the sides of the Subpod are covered with soil so nothing can sneak in. ● Some pests are attracted to the smell of rotting food. By keeping a healthy Subpod, your food won't rot, it will instead be composted by your worms and microbes. ● Keep your food scraps in a sealed container/caddy to make sure bugs don’t lay eggs in your waste before you transfer it to the Subpod.
  • How do I keep ants out of the Subpod?
    ● Ants are attracted to dry conditions, so this is usually an indicator that your Subpod is too dry. ● Try wetting your worm blankets or slightly wetting your compost down. ● Aim for compost moisture levels similar to a sponge - only a few drops should come out when squeezed If you find invasive ants around the Subpod, try sugar mixed with Borax at a ratio of 3:1, mixed with water to make a thick paste (adult ants only digest liquids) and place next to invasive ant mounds.
  • Fruit flies
    ● Fruit flies can enter Subpod when you are adding your food waste. They can also get into the system before your food scraps are added to Subpod if there’s a loose lid. ● The more thoroughly you stir your food waste into the bedding, the less likely you will have a problem with fruit flies and other insects. If you add more moist bedding (carbon), it’s easier to bury the food waste thoroughly. Make sure that the larger holes on the sides of your Subpod are below the soil line in your garden bed. ● Any fruit fly larvae that finds its way into the Subpod will slowly diminish over time if the above techniques are used. You should also visit or call 1300 666 010 for further information if you live in South Australia.
  • To prevent flies from breeding in your Subpod:
    ● Check your kitchen caddy to make sure the lid closes well and keep it closed when not filling it- flies lay eggs quickly! ● Check the soil around the sides of your Subpod hasn’t dropped to expose the worm holes where the flies can get in. ● To amend the fly and larvae/worm balance mix in enough dry carbon to bring the moisture levels down to just moist and and stop feeding the Subpod system for a week. Your worms will survive on the carbon and the flies will starve out or fly awayStir every couple of days to speed the food breakdown.
  • How can I prevent black soldier flies taking over the Subpod system?
    Black soldier fly larvae will eat kitchen scraps faster than compost worms, especially in hot weather. Add large amounts of dry carbon to dilute the food and bring moisture levels down to just moist. Stop feeding the Subpod system for a week but keep stirring every few days.. Your worms will continue to eat microbes and the BSF will diminish. You can speed up this process by picking out the fly larvae if you are not squeamish about it. To prevent black soldier flies from breeding in your Subpod: ● Check your kitchen caddy to make sure the lid closes well - black soldier flies are fast at laying their eggs! ● Soldier flies thrive on sweet foods, so try to add more veggie scraps if you add a lot of fruit pulp. ● Check the soil around the sides of your Subpod hasn’t dropped to expose the worm holes where the flies can get in.
  • Placement of Subpod. Shade or no shade
    If you live in an area with hot summers, you will want to provide some shade for the Subpod worms (and the plants) by picking a place that gets shade in the hottest part of the day, or by setting up a simple frame for shade cloth to be placed over the bed. If you plan to grow food bearing plants around your Subpod they will need at least 6 hours of sunlight, so some sort of seasonal shade cloth structure could be a good solution. We have even seen people plant an umbrella base behind their Subpod in the garden bed to allow a beach or cafe umbrella to be popped up in the heat of the day!
  • Summer - Advice for extreme heat
    The Subpod lid is insulated to keep out direct heat from the sun, but if you live in an extremely hot climate, we recommend installing your Subpod in a shady location to prevent overheating or build a shade structure to protect it in the heat of the day. Keeping the worm blanket wet/moist will also help to keep your Subpod cool or adding frozen water bottles on top of the worm blankets so the air flow keeps them cool.
  • Winter advice
    ● Worms are happy to keep composting until temperatures start reaching around 12°C. Once the needle dips below that, your worms will be feeling a little tired, and things can quickly go downhill from there. ● We have found 3 three proven methods to keep your Subpod happy through the cold. Here's how to keep your worms alive in winter, and keep on composting while you're at it.
  • Carbon - for bedding, how much, what type, when to add.
    Adding Carbon: Every time you add food scraps, add a few handfuls of dry carbon (paper, straw, hay, sawdust, dry leaves, cardboard). About one 5th the amount of carbon to food waste. It’s better to add more carbon than less, as the carbon acts as a bedding material for the worms 3 tips for a healthy Subpod ● It’s important to have carbon in any composting system but Subpod is a little more relaxed about this rule because the worms and microbes can take carbon from the surrounding soil. However, we still suggest placing a handful or two of carbon into the Subpod every time you feed. ● As well as leaves, dry grass clipping and newspaper, ripped up cardboard boxes are a great carbon resource. Does your workplace throw out old paper documents? Check that the ink is plant-based and the paper is safe (planet ark) and if so, add it in. ● You could contact a wood mill or furniture maker for some sawdust. Sawdust is super concentrated as a carbon source, so a big bag would probably last you 6-12 months. ● Coffee husks can be another free source of carbon material if you have a coffee roaster nearby - oh and don’t forget coconut coir peat is one of their favourites!
  • Damaged items
    If you received a damaged product, please notify us immediately for assistance.
  • Why does my Subpod smell?
    ● If your Subpod smells, it indicates that food is rotting before the worms can eat it or there is not enough oxygen in the system. ● In most cases, adding more carbon should balance your Subpod out ● Add carbon sources such as shredded newspaper or cardboard, coconut peat, wood shavings, dry leaves or sawdust each time you feed your Subpod, along with a handful of biochar. ● Have you been using your aerator? Each time you add your food waste make sure you use the compost aerator to mix the scaps thoroughly whilst also adding oxygen to the Subpod, which creates a healthy, fresh-smelling aerobic environment.
  • Can we leave the Subpod if we go away on holidays?
    ● To keep the worms happy while you’re away, buy a pumpkin (or use one that is starting to rot), cut it in half and lay the open sides face down on the top of the bedding of the Subpod. ● Then add a generous layer of dry carbon, either shredded newspaper, coir (coconut husk), wood shavings, crushed dried leaves or dried (brown) grass clippings on top of the pumpkin, and place the worm blankets over everything.
  • Does the Subpod come with a timber slatted seat?
    No, but we’ve got a DIY video on how to make your own. Growhub instructional video
  • Why is Subpod made of plastic?
    From Subpod: ● After extensive testing and research, we decided to use P.P (polypropylene). It is BPA free, food-safe and found in everyday items such as fridges, cars and water filters. ● This material can withstand high temperatures of about 110 degrees Celsius/230 Fahrenheit and has a minimum lifespan of 10-15 years in the soil without any leaching or degradation. This is important since the Subpod will contain, and be surrounded by a microbe-dense soil in a wide range of conditions, including damp and high humidity areas. ● Doubling as bench seating requires that the materials chosen support body weight. Polypropylene based Subpods can bear up to 200 kilograms/440.93 pounds. ● Finally, the Subpod can be recycled when it reaches the end of its life in your garden, completing its cycle. ● There are exciting plastic substitutes being developed which we are looking into, but most of these are designed to be composted after use and we need the Subpod to hold up strong for many years while it is efficiently composting all of your kitchen waste.
  • Additional Resources:
    Grow Hub tutorials: - Caring for Subpod in the first week youtube live: Worms - How to introduce worms into Subpod blog: - Where to buy compost worms blog: - Everything you need to know about compost worms blog: - Getting your Subpod ready for compost worms youtube video: General Subpod Care - How to compost during winter blog: - Set up a grow bed on concrete youtube video: - How to uproot and replant a subpod youtube video: - Tips for fixing an overfed Supod youtube video: - What to do if pests get inside Subpod youtube video:
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