Worm Composting

I have received a number of emails asking why I state the African nightcrawlers must be raised in temperatures of 70 degrees to 85 degrees Fahrenheit when other sites state that they can live in temperatures of 60 degrees, some 45 degrees and others state they can survive freezing temperatures during the overnight hours.

Let me begin that many websites offering information, not just African nightcrawlers but other worms as well, do not even raise worms. Rather, they simply use a drop ship company or companies to fill and ship all of their customer orders. That being said, I personally raise red wigglers, African nightcrawlers, European nightcrawlers, Alabama Jumpers and Mealworms. I also have two dogs

Why would some websites state that you can raise African nightcrawlers in colder temperatures? Your guess is as good as mine however many probably due to lack of knowledge and experience. I have seen a number of websites which have literally copied and pasted, word for word from other websites.

Rather than me simply restating what I have before, which is in direct conflict with some other websites, I figured I would prove it to you so as there would be no question in your mind. I decided to run an experiment which by the way I had informed a friend would only last 24 hours due to my experience in raising worms. After all, as the saying goes, a picture is worth a thousand words.

Now before I proceed, let me inform you that the last picture is kind of graphic which may not be suitable for some…

That being said, I decided to use a refrigerator which I store mealworms prior to shipping which is set at a constant 48 degrees Fahrenheit. Now mind you, I only used four good and healthy 6 – 8 inch African nightcrawler worms since I did not wish to waste a bunch, which by the way I hated to part with

You can see the four worms in the bait cup, which I then placed some castings which were straight from the original bin I had pulled the four worms from. You will notice the worms look in great shape. I proceeded to place the African nightcrawlers into the refrigerator at 7:48pm January 1, 2010.

Now for any skeptics out there, I used my automotive multimeter which also has a built in thermometer that I now use full time on my worm bins as it is easy to read the temperature especially when your eyes begin to deteriorate as mine have. As you can see when I placed the sensor on the end of the wire inside the refrigerator with the door shut, the reading was at 48 degrees Fahrenheit.

I checked on the worms 12 hours later and they were already just about dead as they had begun to discolor turning a pale white towards the tail ends. Basically the circulation to the tail end of the worms has either stopped or slowed considerably. Mind you twelve hours is basically the time for an overnight temperature. At this point, even if the temperatures had risen up to the eighties, these four worms would not have made it as they were already too far gone.

I did not get a picture of this stage as I found out the batteries in the camera had run too low, hence I placed them on the charger.

I had some running to do this evening, January 2, 2010, hence I checked on the worms a little later than I had anticipated. I pulled the worms out of the refrigerator at 8:29pm just about 24 hours and 49 minutes since the experiment had begun.

As you can see from the picture below, the African nightcrawlers are dead. The pale white color has spread throughout their bodies while a bulging red color separates the paler areas. These worms are not only dead but have been for a while since they are now beginning to decompose.

One major item to notice is the fact that all four worms are the same. In other words, the temperature did not affect 25% or 50% but rather 100% of the worms!

Even if you tried to raise African nightcrawlers at 60 degrees Fahrenheit they would die, most likely surviving up to a week before keeling over, however the end result would be the same.

This is mainly why I state the African nightcrawler needs 70 degrees minimum. In fact, this is the low end of the spectrum. If you really want your Africana nightcrawlers become active and prolific, get the internal worm bin temperature up to 80 – 85 degrees Fahrenheit, which is what they prefer!

I hope this helps to clarify first the temperature range by which you want to raise your African nightcrawlers and secondly that I will not throw you a bunch of misinformation, but rather facts from my years of experience in raising worms.

Now go and tuck your worms in for the night to keep them warm

Bruce