Best Worm Composter Reviews 2018

Any fruit or vegetable scraps, leftover pasta or bread, leaves, even coffee grounds, and eggshells. These are all great food sources for worms so all you need is the best worm composter and the little wiggly compost eaters – the worms.

Top  3 Worm Composters

4.7/5

  • A standard 4-Tray size that can be expanded into 8 trays
  • The handy, redesigned lid/harvesting stand
  • Good quality materials with little maintenance needed

4.7/5

  • A standard 5-Tray size that can be expanded into 7 trays
  • Solid quality materials used and little maintenance needed
  • Comes also with a "worm tea" collector tray and the spigot for easy draining

[BEST WORM COMPOSTING BIN]

3. VermiHut 5-Tray Worm Compost Bin

4.5/5

  • Does the job well and looks great
  • Odorless and can even be put indoors
  • The design makes it super-easy to harvest castings

There are a lot of great worm composters with different useful features. There are also numerous worm species but not all of them can be used for vermicomposting (making compost using worms). We’ll go over some of the most popular worm composters, introduce you to the best worms for the job and go over some important things you need to know if you want to have a successful compost home production.

What to look for in the best worm composter and how to make the best of it

Protection From The Light And The Elements

This is a must, especially if you plan on keeping your composter outside. Solid quality materials are crucial because you need the compost protected. It also needs to have a good quality lid to keep rain out. We recommend putting the worm composter in a shady spot so that it doesn’t get overheated in the sun.

Worms naturally thrive away from sunlight. This is why you want your composter to simulate that natural environment as much as possible. Choose a composter that’s non-transparent so that its contents stay in the dark.

Drainage Feature

The composting worms don’t like the excess moisture. Worst case scenario: they will drown if there’s too much leachate (also called “worm tea”). To avoid this, look for a composter with a spigot or any other draining feature.

Avoid adding too much fruit or vegetable matter, especially watermelon rinds or other wet materials. Leachate contains some nutrients and can be used as a fertilizer source. However, as it doesn’t go through the worm’s gut and get digested, it may contain pathogens which aren’t safe for edible plants.

If your worm composter has a spigot, you should drain off the leachate regularly. In addition, you should mix it at least 50/50 with water and spread it on your lawn or on the soil in a flower garden.

The Ease of Harvesting Castings

Most commercial worm composters provide harvesting in a way which doesn’t disturb your worm colony. The less you disturb your worms, the faster they will reproduce and make you great castings. Because of this, a built-in option that makes the process easy is ideal.

Ample Composting Space And Good Ventilation

Choose the composter size depending on the number of people producing waste food for the worms. The perfect choice would be a composter that meets the expected scraps input but can also expand as regards the capacity so that your composting worm colony can breed and expand as well.

As for ventilation, your composting worms need to breathe just like you do. This is why you need a composter which is well-ventilated at all times.

Which composting worms are the best?

Apart from the best worm composter that fits in your budget, you will need live composting worms. 

The best composting worms are Red Wigglers (Eisenia Fetida). Their incredible appetite makes them very popular among composter owners. They also breed faster and grow better in a worm composter environment. 

Another great composting worm species is European Nightcrawlers (Eisenia Hortensis). These are the most tolerant of temperature fluctuations and although they don’t breed as fast as Red Wigglers, they work really great in the worm compost bin. Both species are readily available for purchase so no need to dig around for them. 

What not to feed composting worms

Remember not to feed your worms meats or oils that tend to go rotten and smell bad. In addition, too many acidic foods can irritate the tender worm bodies and increase the pH of your bin, so don’t add too many acidic foods.

You should never add inorganic stuff like plastic, glass or any other non-compostable materials like metal or glass. The worms can’t eat them and they are not useful or nutritive. In addition, colored newspaper or cardboard should also be avoided because some dye types can be dangerous or toxic to your composting worms.

Best Worm Composters Reviews

4.7/5

Worm Factory 360 Worm Composting Bin is a perfect composting solution to use throughout the year. This kit comes with four trays with screened bottoms. The trays are stackable, which is a great feature for expanding as well as decreasing your worm farm.

The Worm Factory 360 has an attached spigot, worm bedding materials, and a base with an angled worm ladder. It’s super easy to start vermicomposting using this kit. All you need to do is fill the bottom tray with bedding, food scraps, and worms, of course.

This kit conveniently includes a manual and an instructional DVD for easy set up and maintenance. It shows how easy it is to recycle scraps from your kitchen and turn it into nutritive fertilizer for your garden plants.

The fertilizer created from worms which happily work in your Worm Factory 360 has been reported to have nutrients that are ten times greater than normally produced compost.

As the composting worms make their way through the “delicious” food waste from your home, they migrate up into the next tray of scraps. The compost can be harvested monthly, and you can use it in your vegetable garden, flower beds or even in your potted house plants.

The Worm Factory 360 requires very little maintenance - only about fifteen minutes each week and comes with a built-in "worm tea" collector tray and spigot for easy draining.

Things We Liked

A standard 4-Tray size that can be expanded into 8 trays

The handy, redesigned lid/harvesting stand

Good quality materials with little maintenance needed

Comes with a "worm tea" collector tray and spigot for easy draining

Includes a manual and DVD with a step-by-step guide to maintain your worm

Things We Didn't Like

Some of the extras occasionally miss on arrival

4.7/5

Worm Factory DS5BT 5-Tray Worm Composting Bin comes with standard 5 trays but the composter can be expanded up to 7 trays. This makes it possible for you to get as much worm compost as your garden plants will ever need.

When full, each tray weighs only 12.5 pounds, which makes lifting and arranging trays very easy. This worm composter is odor-free, making it ideal for both indoor and outdoor use.

To get started worm composting, you need to add a handful of worms and your compostable waste to the bottom tray. The worms will then start processing the food. Once the bottom tray is filled add another tray on top.

The worms will migrate upward to the new food source leaving the bottom tray full of nutrient-rich compost. Easy-peasy! You can do this throughout the year and harvest the compost up to once a month!

The finished compost can be used in your garden, your raised flower beds or your potted houseplants. The Worm Factory DS5BT is simple to set up and operate and it will take less than 15 minutes a week.

With the unit, you will also get a 38-page instruction manual which offers a convenient step-by-step guide to managing your Worm Factory. You will also get a bonus "What Can Red Wigglers Eat?" infographic magnet which you can stick on your fridge for a handy reference.

This 6" x 9" magnet splits common food items into 3 categories: perfect worm foods, foods to feed in moderation, and foods to avoid feeding altogether. You will find it very useful until you memorize what to feed and what not to feed your hungry and hardworking worms.

For example, if the worms are crawling up onto the sides and lid of your Worm Factory DS5BT composter, the bedding might have become too acidic. In this case, you should reduce the quantity of citrus peels or pineapple scraps which you’re putting in the bin. Adding some crushed-up dried eggshells can also reduce the pH level of the bin, which should make your worms happily composting.

Things We Liked

A standard 5-Tray size that can be expanded into 7 trays

Solid quality materials used and little maintenance needed

Comes also with a "worm tea" collector tray and the spigot for easy draining

Includes a detailed instruction step-by-step guide

Fridge magnet reminder of what to feed the worms also included

Things We Didn't Like

Some of the extras occasionally miss on arrival

4.5/5

VermiHut 5-Tray Worm Compost Bin is a very ease to assemble vermicomposting unit. This worm composting bin has very little (if any) odor so you can easily use it indoors as well as in your garden where it will look as a beautiful addition.

It features the doomed shape lid design which is designed to ventilate air and moisture so that the worm bed is comfortable for worms to do their job. The special corner design reinforces the strength of the products and also allows better air circulation.

The lid universally fits into the existing trays in the worm composter market, which is a cool bonus feature. VermiHut 5-Tray Worm Compost Bin can automatically separate worms and worm castings to save hassle during worm casting harvest.

The stacking tray feature allows you to add up to seven trays to meet your growing compost demands. This stackable worm compost bin allows food scrap to be fed into the bottom tray with compost worms and bedding. As the worms finish digesting, they will migrate upward into the tray above, leaving rich castings behind them for you to harvest.

This bin requires little maintenance and if you by any chance notice molds, you are probably adding too much food to the bin. The worms can’t eat it all so it rots. You can prevent molds from forming by burying the food an inch or two under the bedding’s surface, and adding some moistened newspaper or cardboard over the top to help keep mold spores out.

If you are adding just about the right measure of food scraps, VermiHut 5-Tray Worm Compost Bin will produce great compost and look great in your garden, too. Overall, a great bin at a really affordable price.

Things We Liked

Does the job well and looks great

Odorless and can even be put indoors

The design makes it super-easy to harvest castings

Easy setup and no liquid leaks

Efficient use of space and visually pleasant

Things We Didn't Like

The bin holes are too big to keep the fruit flies away

4.6/5

Hungry Bin Flow-Through Worm Farm features a quick and convenient way to compost your kitchen scraps. This is a highly efficient composter with an innovative, patented design that allows worms to process up to four pounds of food scraps a day. 

This bin enables organic waste to be quickly converted into castings and a nutrient-rich worm tea. The waste is easily converted into natural fertilizers, including both castings and liquid.

The fertilizer is easy to collect from the sturdy Hungry Bin, which can be moved around easily. The wheels make it easy to move around the Hungry Bin depending on the conditions and your needs.

The instructions you will get with the Hungry Bin state that harvesting should be done only when the contents are about 1” from the top. This is to ensure that the castings at the bottom are properly compacted and not fall out in a big slide when the bottom tray is removed during harvest.

In addition, getting the vermicompost off the bottom is much easier and quicker using this unit. We recommend getting this bin if you live in a temperate climate region and the bin should be placed in a position where there is no excessive heat or freezing weather conditions for a longer period of time.

Things We Liked

Very easy to add scraps and get the casting out

Works great and there are no smell and leaks

Super convenient to use and sturdy build

No maintenance issue with this bin

Things We Didn't Like

It could do with even better ventilation

4.3/5

Chef's Star 3-Tray Stackable / Expandable Worm Composter is a 3-tray composter made of terra cotta colored high-density polyethylene. It is sturdy, durable and odorless.

What you need to do is fill each tray with scraps (vegetables, fruits, egg shells, coffee grounds, and other kitchen scraps). Your worms will dig in and happily eat away, leaving behind the very best compost available.

At this point, all you need to do is pull out the bottom tray, refill it with scraps and put it back on top. There are simple included instructions to guide you through the process. No need to worry, just get the worms and they will know exactly what to do with your food scraps.

We recommend starting with 1000 worms. You will see that their numbers will grow fast, because they're living the luxurious life in this bin. Soon enough, you can expect a colony of more than 3000 worms, all working for the benefit of your plants.

You won’t have to sift through your worker worms, because they quickly move up to the next tray. The super nutrient-rich moisture is captured in the drip tray which holds the nutrient-rich liquid fertilizer known as ''worm tea.''

Just follow the easy instructions included, and the natural vermicomposting process will provide your plants with a fresh and nutritive source of natural fertilizer.

Things We Liked

The trays stack, taking up little space

No big tumbler, no shoveling, no foul smell

Sturdy build and easy to maintain

Each tray holds about 1200 worms

Things We Didn't Like

Instructions are simple but not comprehensive enough for new users

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