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celery_gw

Population too low for recovery?

19 years ago

Hello worm experts!

I am new at this vermiculture thing so unfortunately my worms suffered many losses.

I started my system at the beginning of March. We made a wooden bin 2'x2' by 1' deep of plywood and 2x4s coated with linseed oil with about 14 3/4" holes drilled in the sides. I put damp newspaper about 8" deep in the bin then added the worms (1/2 pound).

Everything seemed to be going well for the first couple weeks. The compost was being eaten and I was slowly adding more (I follow the 'pocket feeding' technique). Then I noticed some worms had attempted to evacuate and I found them dried up on the kitchen floor. I knew that they don't attempt to escape unless there's a problem, but I couldn't figure out what the problem was. Finally yesterday I did some digging and found thousands of white mites and a huge amount of dead worms. I dug deeper and found that the bottom layers of newspaper were all dried up, which was the likely reason for the worm deaths and attempted evacuation. I panicked and added a lot of water, then some dry bedding to balance it out.

I'm not sure how many are left, I still see some that are alive, and today I dug around and noticed some babies (tiny pale worms). In your opinion is my vermicompost system doomed or should I take the hatchlings as a sign that there may still be hope of recovery? Should I wait a while before feeding them again?

I feel terrible about the deaths, I hope all is not lost!

Thanks so much for your help!

Cathy

Comments (4)

  • 19 years ago

    If you have baby worms the system will recover in time. Worms do escape from time to time, a few, without there being any bin problem. In this case you did have a problem. I don't think the dry bedding at the bottom was the problem, they simply move to where things are wetter if there is a place where things are wetter. It sounds like there is something toxic to the worms or the entire bin was just to dry. What type of food are they getting besides the compost and is it wet or dry? If everything you add is dry you must monitor and add moisture regularly. I'm not sure the linseed oil is a good or bad idea. I'm sure someone will read this and comment about that.

  • 19 years ago

    Thanks for your response!

    Hmmm.. I was convinced that the only thing that could have been killing them was the dryness. But I only noticed a problem after I fed them avocado peel. I was afraid that that might have been a bad idea but I've never heard anyone say that it is toxic to the worms. Most of the other compost I feed them includes tea bags, banana peel, egg shells, cucumber peel and the odd other thing. All the food is frozen ahead of time to kill fruit fly eggs (as recommended by the worm breeder). The food is moist when I put it in.

    Would avocado make them sick? I know it has a very high fat content which might not be good for them. Regardless, they are never getting avocado again, just in case.

    I'm also thinking that the 'baby worms' may have been pot worms... so I'm not getting too optimistic yet.

    Cathy

  • 19 years ago

    Cathy,

    Small amounts of avocado shouldn't bother them. If you're scooping out the skin and putting it in there then that shouldn't be enough oil to be a problem.

    The fact that the newspaper at the bottom was dry is a warning sign. Generally speaking the bottom of a worm bin is the wettest part, because water tends to seep downward. So if the bottom is dry then chances are the whole bin is too dry.

    Wooden bins are prone to drying out, because the wood is porous enough to let water evaporate. Plastic bins have the opposite problem: water can collect in them if you're not careful. With a wooden bin you should always wet your fresh bedding before you add it, and keep an eye on the moisture levels. (Just check it by feel every time you add food.) If it gets dry you can add wet bedding or just soak the surface with a spray bottle.

    As long as you have some adult worms, there's still a fair chance that the population will recover. However you won't be able to feet them as much while that's happening. Depending on how patient you are, you might want to order some more adults to re-seed your bin.

  • 19 years ago

    Yeah, I'm fairly convinced it was a dryness issue. Most of what I've read about vermicompost problems was related to the bin being too moist and acidic, so I wanted to avoid that problem and ended up at the opposite extreme. I guess most people have plastic bins so I should have been focusing on what often happens with wooden bins. Well, I've learned my lesson I guess.

    The unfortunate part is that I wanted to have the compost ready to harvest by June so I could fertilize my garden but at this current population level it looks like that won't happen. If I decide to order more worms I'll either have to wait until it gets warmer out or take another long drive to the city.

    Do people ever harvest part of their compost before the whole bin is finished to use as fertilizer? In that case I might have enough to use in 2 months if I can maintain the current worm population.

    Thanks a lot for your advice!

    Cathy

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