A worm farm is a fantastic way to minimize your food waste by turning it into a rich fertilizer for your plants and soil. There are various types of commercial worm farms available to choose from. If you are interested in buying a worm farm, then this article will help you choose the right worm farm for your needs. We’ve done all of the hard work for you to put together the best worm farm reviews. Our reviews are based on our own experience, hundreds of Amazon reviews, other blogs and numerous Youtube videos.
Jump straight to our reviews of the best worm farms.
Quick Summary of Worm Farms
|Name||Image||Price Range*||Description||Suitable For|
|Worm Factory 360||Medium||A high quality designed stackable worm farm with 4 trays expandable up to 8.||A good worm farm for outdoors that comes with lots of extras bundled.|
|VermiHut 5-Tray||Low||Compact and comes with 5 trays.||A more affordable option.|
|Urbalive Indoor||Medium||A sleek and modern designed stackable worm farm for indoors which has 2 trays.||An indoor worm farm for small amounts of food waste that can be used all year round.|
|Can O Worms||Low||Round with 2 trays. Medium size.||A basic worm farm for beginners.|
|Worm Cafe||Low||A basic stackable worm bin that is rectangle with 3 trays.||A basic worm farm for beginners.|
|Hungry Bin||High||A high quality innovative flow-through designed worm farm which has a large capacity. Can easily move around on wheels.||If you have a lot of food waste and need a larger capacity worm farm.
|Chef’s Star||Low||A basic stackable system that is compact with 3 trays.||A small worm farm that is affordable.|
|Exaco 610016||Medium||A bright colored stackable design for indoors that moves on wheels and has 3 trays.||Indoors|
|Worm Inn||Low||A unique flow-through designed worm farm that hangs from a stand and has terrific air ventilation.||If you’re looking for a worm farm that is highly breathable.|
- Low < $100 USD
- Medium <= $ 150 USD
- High > $150 USD.
What To Look For In a Worm Farm
Worms are quite tolerant to varying environment conditions. But there’s a little bit of science involved in order to properly maintain a worm farm. This includes regulating the bin temperature and checking the moisture level. If the conditions in the bin are unkept, then your worms will likely suffer and perish.
So when buying a worm farm, there’s a few other things to look out for including:
- Price – This depends on your budget. In general, for higher quality or a larger size, you can expect to pay a little bit more.
- Design – Some worm farms are easier to use than others. Most worm farms come in trays allowing you to easily expand by adding more trays. Flow-through worm farms such as the Hungry Bin and the Worm Inn are becoming increasingly popular.
- Appearance – The visual aesthetics. Nobody wants an ugly worm farm.
- Setup – How easy is the worm farm to assemble?
- Air Ventilation – Airflow helps the decomposition process and worms need oxygen to perform at their best level. Recycled plastic is not very breathable.
- Drainage – A worm farm bin should also have a drain system. Insufficient drainage of excess liquid can lead to all sorts of anaerobic activity. Worms breathe in air through their skin and will drown if the bedding is too moist.
- Size & Shape – The shape of the farm can also be an important consideration depending on where you want to store it. If you only have a small amount of food scraps or not much space, then a smaller worm farm is more suitable. Though generally speaking, the larger the worm farm the better, as it can hold more worms.
What to Consider When Buying a Worm Farm
Choosing a Worm Species
Certain worm species are suited to different environments. Some worms do better in warmer weather, whilst other species do best in colder weather. Therefore it’s not unusual to combine different species of worms to improve the overall strength and resiliency of your worm farm.
Red Wiggler worms are the most popular species of worms for vermicomposting because they are:
- prolific breeders
- very tolerant to varying environment conditions (more than other species)
- don’t mind the occasional disruption or handling (unlike other species)
- live in the top later of material only
Nightcrawler worms tend to burrow deeper in the soil and only come to the surface at night to feed. Blue worms and African Nightcrawler worms are more suited to warmer climates. Whereas European Nightcrawler worms prefers cooler conditions.
Quantity of Worms
A good starting amount is 1,000 worms. You may want more worms for larger bins such as a the Hungry Bin when starting out. Under favorable conditions, your worms will increase in population quickly. In very general terms, a Red worm population can double in number approx every 60 to 90 days.
Worms eat about half of their body weight each day. 1,000 worms weighs approx. 1 pound or 500 grams. So if you average about 250 grams or ½ a pound of food waste every day, then you will need about 1,000 worms. It’s important to note that not all food waste is suitable to feed to worms.
Preparing the Bedding
Compost worms live near or on top of the soil surface. Worm bin bedding creates a habitat for your worms to thrive in. Bedding helps to retain moisture and improve airflow in the worm bin. It also makes a long term food source for your worms.
Worm bin bedding usually consists of a mix of carbon materials such as shredding newspaper, cut up pieces of carboard, egg cartons etc… Worm bin bedding material needs to be at about 80% moisture level. Hence you should dampen the bedding material before adding it into the worm bin to keep things moist. The bedding material should feel like a damp sponge, moist but not dripping.
Some worm farm kits come packaged with a coconut coir bedding block to help you get started.
Maintaining The Worm Farm
Once you understand the fundamentals, maintain a worm farm is easy and fun. To maintain a thriving worm farm, you need to do the following 9 things:
- Be conscious of what you feed your worms. It’s very important not to overfeed your worms as this can lead to serious worm farm problems. Remember that worms can only eat roughly half their body weight everyday. You will also want to avoid adding certain foods such as meat, dairy, starch, citrus, garlic and onion.
- Always add lots of carbon such as paper, cardboard etc… The Carbon-to-Nitrogen ratio in a worm bin should be 1:1 or higher. When in doubt, add more paper.
- From time to time, the pH level in the worm bin may dip too low. A handful of agriculture lime of crushed eggshells each week will help to control the pH level in check.
- Even though worms can tolerate a wide temperate range between 59° – 86° Fahrenheit or 15° – 30° Celsius, you will still need to constantly regulate the worm bin temperature. In extreme heat or cold your worms will likely suffer and perish.
- Every couple of days, check the moisture level in the worm bin. The “damp sponge” test is the standard. Squeeze the worm bedding in your hand and check whether any water drips out.
- Worms are very sensitive to sunlight, so keep the worm bin dark at all times.
- You will also need to keep a lookout for any harmful pests in the worm farm. Most pests such as potworms and fruit flies are harmless so don’t worry too much. Just keep an eye on it.
- Every couple of days remember to drain any excess liquid (worm tea or worm farm leachate).
- After worms digest organic materials, they release waste from their bodies called worm castings. It’s the richest fertilizer known to humans. When your bin become full of worm castings, you will need to harvest the worm castings. It can also be applied as a liquid fertilizer called worm tea.
Best Worm Farm Reviews – The List
OK. Now lets get down to business. Here are our reviews of the best worm farms you can buy on the market.
- Worm Factory 360
- VermiHut 5-Tray
- Urbalive Indoor
- Can O Worms
- Worm Cafe
- Hungry Bin
- Chef’s Star
- Exaco 610016
- Worm Inn
1. Worm Factory 360 Review
The worm farm kit comes with some bedding material including coconut coir, mineral dust and pumice. As well as some tools including a scraper, rake, thermometer, pH meter and moisture meter. The worm farm kit also comes with instructional DVD, a manual and a 70 page book called “The Complete Guide to Vermicomposting With the Worm Factory 360″. As a bonus, the lid has a sticker on top which provides some useful worm farming tips and advice.
The worm farm includes 4 vertically stacked trays, allowing you to have more than one working tray at a time. It’s easy to get started; you just fill the bottom tray with bedding, food waste, and worms. As your worm colony grows, you can just add more trays. The worms will migrate upwards to feed. The number of trays can be expanded up to 8. If trays are too full, the weight compresses the worm castings in the lower trays which can restrict airflow.
There’s a detachable worm ladder for the base of the worm farm. This helps your worms climb back up into the bottom tray in case they get down into the base.
The spigot makes it easy drain and collect worm farm leachate or worm tea. But it can sometimes get clogged with worm castings.
The legs are slightly angled outwards and a little wider which helps to make the worm farm more stable.
The lid double acts as a stand to hold the trays when you need to harvest the worm castings. The bottom of the trays will be covered in compost so this helps to make the process a bit cleaner; especially if your worm farm is kept indoors.
- Worm ladder helps worms climb back up to the bottom tray if they get down to the base.
- Bundled with an instruction DVD and a 70 page book on how to use the Worm Factory 360.
- A durable design and quite stable as a freestanding structure.
- The trays are not too large so they’re still easy to move around when full.
- The spigot makes it easy to drain any excess liquid.
- It’s quick and easy to setup.
- The lid double acts as a stand for trays when harvesting worm casting.
- Not too big so it can be stored either inside or outside.
- It’s plastic and isn’t very breathable.
- Spigot can get clogged with worm castings.
- When using lots of trays, the lower trays can get compressed which restricts airflow.
2. VermiHut 5-Tray Review
The VermiHut 5-Tray is one of the best worm farms if you’re looking for a more affordable option. It has an aesthetic design and is made from recycled plastic. It comes with a lid, five stacking trays, a liquid collection tray, and a pedestal base. The trays can expanded up to 7 trays so there’s plenty of room for your worms to grow.
The bottom tray sits on top of a plastic board or cloth filter which helps to stop your worms from falling into the liquid collection tray.
The worm bin is compact which makes it suitable for smaller backyards, courtyards and balconies etc… It is straightforward to assemble. And like other stackable worm farms, it is very easy to use and maintain.
The lid is shaped like a roof with air holes on the side for greater ventilation which is a big plus. The downside is the air holes are fairly large which makes harder to keep pests out and enables your worms to escape. Note that worms may try to escape if the conditions in the worm bin are unsuitable to live in (e.g. temperature, pH level, moisture etc…).
The worm farm comes with an instruction manual and coconut coir bedding block to help you get started.
- The domed lid with holes is designed for air ventilation
- The plastic board filter stops worms from getting into the liquid collection tray
- It comes with 5 trays which can be expanded up to 7 trays
- The design looks great and is compact
- The trays are small making it easy to harvest
- The spigot makes it easy to drain any excess liquid.
- It’s quick and easy to setup.
- The air holes in the lid are fairly large which makes it hard to keep pests out such as flies
- The instructions are not as detailed as other worm farms
3. Urbalive Indoor Review
The Urbalive Indoor worm farm is one of the best indoor worm farms available. It is a more expensive worm farm with a sleek and modern design. This worm farm looks more like chic furniture, so it wont look out of place inside.
The worm farm is made from recycled polyethylene and it comes with 2 stackable trays.
A step-by-step instruction guide is provided to help you get started. The worm farm is super easy to setup; most of it is already assembled except the legs. There’s a spigot on the bottom rather than on the side which is unusual. In order to collect worm farm leachate or worm tea, you’ll need to slide a container underneath which is somewhat annoying.
The lid is little tricky to close as well. And be mindful that even indoor worm farms will attract fruit flies and bugs. The cloth handles of the screen between the base and the bottom tray are known to degrade.
The Urbalive Indoor worm farm is an excellent choice if you’re looking for a worm farm that can be used indoors.
- Looks great with a sleek and modern design
- Very easy to set up, most of it was already assembled
- Can be used indoors all year round
- The lid can be a little tricky to close
- The cloth handles of the screen between the base and the bottom tray are known to degrade
- Does not have much capacity
4. Can O Worms Review
The Can O Worms is a great worm farm for beginners. It is a 2 tier circle worm farm, made from recycled plastic. The bottom tray is the processing tray and the top tray is the working tray where the worms feed on organic food waste. When the top tray is full, you harvest the bottom tray and rotate the trays so the bottom tray becomes the top tray.
The worm farm is very easy to setup, with no screws needed. It also comes bundled with a coconut coir bedding block to help you get started.
The round shape of the worm farm is unique and appealing at first. But it takes up more space compared to a square design. In addition to this, whenever you cover up food with newspaper or cardboard, you will never be able to tear it perfectly to fit along the rounded sides.
The lid has plenty of small air holes for ventilation. It keeps flies out and worms cannot escape. Although some rainwater may get in. The worm farm only comes in black which absorbs heat quickly.
The trays are large and bulky which makes them difficult to lift. The legs are not very strong and become unstable under the weight.
The liquid collection tray is fairly big which improves airflow to the bottom tray. The other benefit is you do not need to collect the worm farm leachate or worm tea very frequently. There’s also a handy worm mound so that your worms can climb back up into the bottom tray.
The Can O Worms is a good starter worm farm, and it’s height makes it ideal for kids.
- Flyproof lid
- Good ventilation with lots of small holes in the lid and a large liquid collection tray
- Very easy to setup
- Great for kids
- Provides a large surface area for feeding
- The round shape can be annoying
- Only has 2 trays
- Not as easy to harvest worm castings as the trays can become very heavy
- The plastic isn’t very strong and the legs are prone to buckle underneath
- Only basic setup instructions provided
- Rainwater can get into the bin due to the air ventilation holes on top
For more information, read our in-depth Can O Worms review.
5. Worm Cafe Review
The Worm Cafe is a 3 tier stackable worm farm, made from recycled plastic. Even though it is made from plastic, the worm farm is quite sturdy. There are 3 large trays which each have air ventilation holes on the sides.
It has a similar design to the Can-O-Worms worm farm except that it is rectangular in shape. The lid is hinged which makes it easier to feed the worms. Instructions are also engraved on it’s underside of the lid.
The liquid collection tray is fairly large, with a worm mound so that worms can climb back into the bottom tray.
- Flyproof lid
- Good ventilation with air holes on the side of each tray and a large liquid collection tray
- Very easy to setup
- Hinged lid makes it easier to feed worms
- Instructions engraved on the underside of the lid
- Simple and straighforward design
- Not as easy to harvest worm castings as the trays can become very heavy
- Only has 3 trays
6. Hungry Bin Review
The Hungry Bin worm farm lives up to it’s name as an efficient food processor. It’s innovative flow-through patented design makes it super easy to maintain. This is one of the best worm farms productivity wise, but it comes at a high price.
Worm castings should only be harvested when the bin is nearly full. As the bin is large, this can take a long time if you do not produce much food waste. If you attempt to harvest the worm castings too early before it is properly compacted, all the material present in the bin, including the worms, will fall out. To harvest the worm castings you just need to release the bottom of the bin. The floor should be full of worm castings. Since worms migrate upwards to the surface to feed, the castings will be worm free.
The top of the bin has a larger surface area and the lid has lots of air holes for ventilation. However airflow can be a problem due to the scale of the Hungry Bin. The structure of the bin is sturdy and you can move it around on wheels. There’s a drip tray which sits underneath the bottom in the open.
- Well designed
- Super easy to maintain (except when there are problems…)
- No lifting of heavy trays
- No need to sort out the worms from the casting (as worms migrate upwards)
- Large capacity and highly efficient
- Sturdy and moves on wheels
- Wider surface area
- Large mass makes it easier to regulate temperature e.g. takes longer to heat up
- Although unlikely, it is claimed that worms can escape through the gaps between the lid
- Insufficient ventilation for it’s size
- Worm tea evaporates as the drip tray is in the open
For more information, read our in-depth Hungry Bin review.
7. Chef’s Star Review
The worm farm is quick and easy to assemble. The lid comes with a useful handle and it has some some air holes for ventilation. The spigot drains any excess liquid for easy worm tea collection.
A feedback theme is the instructions are incomplete.
- Appealing design
- Compact and does not take up much space
- Useful handle on lid
- Study and durable plastic
- Instructions are incomplete
- Contents in package sometimes looks different than in pictures
8. Exaco 610016 Review
The Exaco 610016 moves around on 6 wheels and has an eye catching design with bright colors. This worm farm would not look out of place inside your home. The worm farm is made from plastic and does not have any ventilation features.
It has 3 trays or rings and the lid is designed to hang on the side of the bin when in use. The trays can become difficult to pull a part over time. There’s also a reservoir to catch the worm farm leachate or worm tea.
Note there has been some complaints that the instructions are not in English; but you can find them online.
- Easily movable via wheels
- Good depth for each ring
- Ideal size for being inside
- Eye catching bright colors
- The trays are hard to pull a part. It is almost like a tight suction.
- It’s plastic and isn’t very breathable. This can make the worm farm too moist and muggy.
- Only 3 trays
9. Worm Inn Review
The Worm Inn is a continuous flow-through worm farm made from lightweight cordura fabric (the same material used for high end backpacks). It is arguably the most breathable worm farm around. One of the criticisms of plastic worm bins is they are prone to become too wet and anaerobic. The Worm Inn is not a plastic worm bin. It has a amazing air ventilation which is very helpful for the vermicomposting process and keeping your worms healthy. There’s a regular and mega size available.
It has an unusual design though with a composting bag hanging down from a stand.
The Worm Inn can be a bit of a hassle to put together. Unfortunately it does not include all of the materials for the stand. You are expected to purchase PVC piping and glue it together with the pipe joints they do provide.
The bag has a mesh screen on top with a zipper for opening. To harvest you need to open the drawstring at the bottom to release the worm castings. The bottom is tapered so no worm castings should fall out in theory. Note it may be difficult to tighten and close it back up when in use. And note the bottom does not close entirely, leaving a nickel-sized hole.
You will need to put bucket underneath to catch any compost falling out and also any drips of worm farm leachate or worm tea.
As the worm farm is highly breathable, you may need to add some water occasionally or foods with high water content to keep the bedding moist.
- Excellent air ventilation. This produces high quality worm composting results.
- A continuous flow-through design keeps it simple.
- The zipper and top mesh are flimsy
- It tends to get really dirty at the bottom
- Not straightforward to harvest the worm castings. You will need to get down low to collect the worm castings.
- Difficult to move to a different location
- If you like to monitor the worms you will need to dig to find them
- Bottom cannot close entirely which causes some compost to fall out of the bottom
- No collection tray provided
- Hassle to assemble the stand. You are expected to purchase PVC piping separately from a local hardware shop.
- Difficult to keep the bedding moist
Conclusion: Our Top Picks
Worm farms vary in price, shape, size, and design. Choosing the right worm farm depends on your individual needs. Here’s our top picks from the best worm farm reviews for different criteria:
- Most Convenient: Hungry Bin
- Best Value For Money: Worm Factory 360
- Most Efficient: Worm Inn and the Hungry Bin in 2nd place
- Most Attractive: Urbalive Indoor
- Best Low End: Worm Cafe
- Best Mid Range: Worm Factory 360
- Best Indoor: Urbalive Indoor
Please leave a comment below with your own thoughts on the best worm farms that you can buy.