I fed my herds this evening. I’ve been feeding them on the weekends, but this time I was out of town. That’s one of the great things about the worms. No other livestock can have such a varied feeding schedule and thrive. Want to go on a vacation for weeks at a time? No problem! You can feed the worms and not worry about them until you get back!
Saturday I was up in Waterloo, Iowa, visiting my grandmother on her small farm. There were harvest (immature green) apples on the ground under the apple trees. I conned my kids into the picking those up for me and I brought home a bag of apples for my worms. It’s not that I needed the apples, really. I have an apple tree of my own which has dropped a lot of apples. Those have been tossed— whole— into my outdoor worm bin. It’s rather that I couldn’t stand to see them go to waste. However, when at my aunt’s house later I declined to pick hers up, as well, when she heard about it. I couldn’t get the kids to do it again and I wanted to visit. The apples I brought home will get halved and quartered, bagged and frozen until future use.
Each person has to figure out what works best for herself when it comes to vermiculture. It’s only recently that I’ve really started feeding my worms in any quantity. My early attempts led to over-feeding and that’s not pretty. It can also kill off entire herds if the foods get “hot.” To avoid that, I started feeding just little dribs and drabs. I had no more problems with overfeeding, but I also didn’t have a herd grow like it should.
I began to feed my herd a layer mash that I ground up and to which I added some additional items. This is a known worm-fattening recipe and I will say that my worms devoured the meal as quickly as I could sprinkle it onto their bedding. It definitely gave the worms a more consistent supply of food, but it wasn’t delivering it in much quantity. Food items can become “hot” in the worm bin. This can happen, for instance, when too much of an item is added in one place. The food items also get hot when they come into contact with the carbon bedding (if newspapers or cardboard are used). To make sure the worms have some safe part of their bin to flee to if this happens, the food should never cover the entire surface of the bin. This limited the area of bedding I could sprinkle my chicken meal banquet over. I was having to do this daily. (Note: if you decide to feed chicken mash, be cautious. Chicken mash can contain more salts than your worms can deal with. Check before feeding it).
The other problem I had if I wanted to feed in greater quantity was that I didn’t have enough food scraps at my house to reliably feed all my worms on a consistent basis. If I was going to feed in greater quantity, I needed a reliable food source.
After a year and a half, I finally decided to go for it and feed the worms much closer to their capacity. I contacted the produce manager at a local grocery store and asked him if I could have their old produce that they had pulled from the shelves. I fully expected him to say “no” but I was delighted when he said yes. Many, if not most, grocery stores refuse to allow this, preferring to put the food waste in a landfill rather than risk a law suit. They worry that the person getting their old produce will eat it, get sick, and sue. It makes me sick just thinking about the waste.
So now I’m on a new learning curve, figuring out how often and how much of my grocery produce haul to feed my worm bins each time. So far, I haven’t fried the worms in any of my bins, thank goodness. Because I had an experience with that about 2 months ago, I’ve been very cautious about over feeding, particularly in my small 3-gallon tubs. I believe I’m still under-feeding those bins at this point. It’s much better to under feed than to over feed. I think I’m doing well overall. The food I place in each bin is gone within 7-10 days. I haven’t had any blooms in mite populations and no odor problems. All in all, it’s going well. One thing that surprises me is how much newspaper bedding I’m going through these days. It decomposes and is consumed right along with the food scraps.
In the coming 3 or 4 months, I should find that the amount of food I’m feeding now each one to two weeks will need to increase to last that same time period. This will be because the herd is growing.
As I said above, each person needs to decide what works best for himself. (Yes, I said “herself” above. I’m trying to be equal opportunity on gender here). Some people puree their food scraps and pour it onto the worm bedding. Others only exert themselves so far as to chop the big pieces into halves or quarters. Some people microwave the food scraps. Other people freeze them and still others let them sit in a slop jar until feeding time. Each of these approaches is valid although usually a person finds one particular way that works the best for them.
I started off with the puree method. That got me into trouble for two reasons: 1) that introduces a LOT of liquid at one time. Chunks decomposing slowly release their water more slowly, not drenching the bedding all at once. Soggy bedding is prone to anaerobic conditions, mite blooms, and other problems. 2) It is easy to over-feed. Chunks of food are bulky. Puree is not. You can add a whole lot of pureed food before it begins to look like as much as some chunks of food. I now do the chunks of food method. I also freeze all my fruit before putting it into the bins. Freezing first does three things: 1) it kills any fruitfly eggs that might hatch and start an infestation in your bin which, from the fruit flies’ point of view, is paradise and 2) the freezing water explodes many cells in the plant materials and speeds decomposition up. 3) After the materials have thawed, a good deal of the moisture has pooled and can be drained from the food, thereby helping to insure the bedding doesn’t get soggy from too much added moisture.
Here’s a picture that shows this. This bag contained several bananas, sliced. I popped that bag into the freezer. Yesterday, I pulled that bag out of the freezer and let it sit for a day. This is how it appeared tonight, after sitting for a day. (It’s not pretty, but then decomposing food really isn’t!). Look at all the liquid that has accumulated in the bag. This all came from the bananas themselves.

So what delicacies did my worms get tonight? They got a delightful mix of squashed grapes (green), some cherries and the slices of bananas shown above. This is my first time with the grapes. I’m curious to see if they take longer to disappear. For that reason, my feedings tonight were on the small side. I did take a potato masher to the grapes first, thinking that if I could split the skins on some of them they’d be food for the microorganisms (and hence the worms) more quickly.
I took pictures of my feeding process this evening, but I’m going to hold off on showing those. For one thing, I wasn’t very happy with them. And, more importantly, I wasn’t doing a full feeding since I’m testing how the grapes go over. Some time soon, though, I’ll take lots of pictures and show the before, during, and after.