Can You Mix Red Wigglers and Nightcrawlers?
Last Updated 9/16/20
Red wigglers and nightcrawlers are two worm species you can use on your farm to maintain and/or increase the fertility of plants' soil.
You may already know that by now...
But, the question you'd like answered is, "can you mix red wigglers and nightcrawlers?"
Yes, you can. Depending, however, on a number of factors we're going to be examining in detail later in this article.
So, find a cool spot you can relax to read this...
What are Red Wigglers & Nightcrawlers?
For those of you who have been wondering what red wiggler and nightcrawlers are.
These red worms are just two worm species that you can use for composting your worm farm and worm bin.
These worm species can help in maintaining the health of your plants' soil, and also in facilitating plants' growth, as well.
Nightcrawlers | All Around Worm
For those who don't know what nightcrawlers are, they're also known as common earthworms or, simply, earthworms (Lumbricus terrestris).
These large red worm species are known to be great diggers.
You even have noticed them a number of times trying to burrow into the soil in your yard after rainstorms.
This is because night crawlers solely depend on the soil for all the nutrients they need to survive.
These composting worms also fancy their solitary underground homes, which is one of the reasons these worm species love to travel down deep into the soil.
As they dig their way through, they eat dirt and, in the process, leave behind what is called "worm castings".

Which can significantly fertilize your farm bin and keep your plants thriving all through the year.
Nightcrawlers make deep burrows that can aerate the soil and allow your plants' root to properly absorb the oxygen they need to stay healthy and keep growing.
You'll usually find these worms after a rainstorm or late at night when they come out to mate (which is probably why they were given the name, "nightcrawlers").
Red Wigglers | Tigers of The Soil
Red wiggler (Eisenia fetida) are otherwise known as red worms or tiger worms. They are similar to earthworms (even categorized as a species of earthworms) with only a few differences in their features.
Compared to regular earthworms, red wiggler are usually tinier and shorter. They also have a reddish-purple hue that distinctly distinguishes them from earthworms.
Below are some of the basic facts that differentiate red worms from common earthworms:
- Red wiggler mainly feed on manure and rotting plant matter.
- They can withstand high temperatures, unlike earthworms.
- They do not burrow deep into the soil as earthworms do.
- You'll find them closer to the earth's surface in large groups.
- They reproduce quickly.
Earthworms Or Nightcrawlers Help to The Rescue
You might not be aware of some of the benefits that using earthworms and nightcrawlers can be to help your soil. Maybe it is time to get yourself a worm bin.
How can earthworms help your plants?
Contributes to Soil Nutrients
As the earthworms dig through the soil, they feed on dead organic matters or underground composts, and, automatically, convert them into "castings" (waste-like materials they excrete after devouring soil composts), which they release back into the soil.
These composting worm castings are made up of important nutrients (like calcium, phosphorus, magnesium, and nitrogen) that can improve the structure of your plants' soil.
Soil Aeration & Water Drainage Improvements
These castings can also reduce water drainage, too.
As mentioned earlier, earthworms love solitary, which is why these fascinating creatures can burrow as deep as six inches into the soil to enjoy this solitude.
The deep tunnels they create in the process serve as efficient channels through which oxygen is allowed to flow through to the plants' root structure.
Increased Plant Growth
The burrows they make also creates a better environment in which the microorganisms can assist in the growth of your plants.
Red Wiggler Worm Benefits For Your Garden
The benefits of red garden worms are similar to that of having earthworms in your garden with only a few differences in the environmental preferences and limits of red worms.
Improve Soil Nutrients
For example, red wigglers prefer to feed on decaying soil matter (like fallen leaves and animal wastes) and manures instead of in-ground composts, as opposed to earthworms.
In this process, they also release castings (as do earthworms, too), which can highly contribute to the nutrients level of your plants soil. This can be also harvested by using a worm bin to help break down kitchen waste.
Increased Oxygen & Air Circulation
Red wigglers cannot dig as deep as earthworms, probably because of their small size and short length, and can be only found within an average of two inches deep into your plants' manure compost or soil.
However, red worms can also aerate your plants' soil to allow the easy absorption of water, oxygen, and other necessary nutrients you decide to use in your garden.
Are Worms Good For Gardens?
Top 5 Ways To Keep Nightcrawlers Alive
You may have to integrate some conditions in your garden to keep your nightcrawlers alive and also ensure the sustainable growth of your plants all at the same time.
1. Keep Soil pH Above 4.5
Earthworms dislike acidic soil, especially a soil structure that has a pH level of less than 4.5.
You might want to measure your soil pH level regularly to keep your soil at and above 4.5 at all times. You can also add lime whenever it falls below the line, as lime can substantially increase the soil pH as well as the calcium level of your plants' soil.
Composting worms, generally, need calcium for survival and the continuous supply of this element will ensure they thrive properly on your farm.
2. Fill Soil with Enough Organic Matter
Earthworm feeds on soil and largely on dead and decaying organic matter. This is why you might want to adequately provide them with such things as plant matter and animal remains to help them, and also help your plant in the process.
3. Limit Use of Toxic Chemicals
Toxic chemicals like fungicides and ammonium sulfate can seriously injure and reduce the number of worms. So, to prevent this, you can reduce, or stop, the use of fertilizers and fungicides that can harm the worms as well as your plants.
4. Regularly Moisturize Soil
Composting worms usually lose about 20% of their body to casting. To help them stay alive, you would need to keep your soil moisturized at all times.
5. Improve Drainage
You might also want to keep your plants' soil aerated to prevent water-logging and to give your worms the access they need into your soil.
Final Thoughts
Mixing both species of red worms together can be good and bad at the same time for your worm farm or compost bin. However, whether you choose to mix or not, worms would still remain invaluable to your garden.
You only just have to do the needful: plant your crops, water them regularly, and the worms will do the rest of the job to ensure you have a fruitful farming season.

Frequently Asked Questions
Can you use nightcrawlers for composting?
Yes, you can. In fact, they're the common worm species used on a worm farm.
What is the difference between red wigglers and nightcrawlers?
Red wiggler and nightcrawlers differ in their overall appearance. They also differ, slightly, in their environmental preferences.
Are red wigglers the same as earthworms?
No, they're not. Red wiggler are tinier and shorter red worms, while earthworms are larger in size.
Do worms interbreed?
No, worms cannot interbreed.

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