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What to Use as Worm Bin Bedding

By Edited Nov 13, 2013 1 0

Overview of worm compost bedding material to be used in your vermicomposting bin or worm farm

Composting Worms
Composting worms need moist bedding in order to survive. Almost any carbon source can be used as worm bin bedding, but some worm bedding material works better than others. This article will give you an overview of what worm bin bedding material works best and where to get it.

Worm composting (vermicomposting) is a composting process in which you feed your food scraps to a specific type of earthworm (red wigglers). The worms eat your food scrap waste and turn it into a nutrient rich worm casting compost that can be used in your garden, on your lawn, or on your house plants to make them healthier. To learn more about vermicomposting read Getting Started with Worm Composting

Worm composting uses a specific type of worm called a red wiggler (the scientific
Vermicomposting (worm composting) bin
 name is eisenia fetida). In nature, this worm lives above the soil in moist piles of leaves or rotting wood. In your worm bin you will want to recreate this environment and get the worms to work for you. To learn more about setting up a worm bin read How to Make a Worm Bin


What to Use as Worm Bin Bedding
Almost any carbon source can be used as worm bin bedding, but some worm bedding material works better than others.
  • Shredded Paper makes an excellent worm bin bedding. I prefer to use shredded newspaper but any type of shredded paper will work. Avoid the glossy section of the newspaper or the glossy junk mail. Shredded (ripped up) newspaper has enough bulk that it creates room for airflow and for the worms to wiggle around it but it also does a great job of absorbing and holding in moisture which these composting worms need to survive. Another benefit is that you can easily find a free source of paper to be used a worm farm bedding. If you don’t get the newspaper at your house, perhaps your neighbor does. You may also have a home paper shredder that you use to dispose of sensitive security information. This makes great worm bin bedding. In fact, I take great pleasure in feeding my red worms my paid bills and unwanted credit card offers!
  • Shredded Corrugated Cardboard is another good source of worm compost
    Corrugated Cardboard
     bedding. Cardboard is thicker than paper so it takes longer for the worms to process it (eat it and poop it out!). Corrugated cardboard does a great job of leaving room for air and worm movement because of the space in each piece of cardboard. You can probably find a free source of cardboard (one large box will fill a worm bin). One drawback to using corrugated cardboard as your primary source of worm bin bedding is that it is difficult to shred or tear. You will make your hands sore tearing it up.
  • Dead Leaves can also be used as worm bin bedding. They are free and plentiful (especially in the fall). One benefit is that they do not need to be shred or torn up. Leaves usually do not hold as much moisture as cardboard or paper so you may need to add water to keep the composting worms at the optimal moisture level. One drawback to using leaves as bedding in your worm bin is you will surely be adding some other little creatures and bugs that were living in the leaves. This is not a problem for the worms but it may be for you, especially if you keep your worm bin inside. Avoid using magnolia leaves as they are too large and waxy to be used as worm bin bedding.
  • Hay or Straw works well as worm bedding material, however unless you live on a farm, you will need to purchase the hay or straw. Another drawback is that hay and straw do not hold moisture as well as paper and cardboard (after they have been soaked). Hay and straw do provide great space for air and worm movement because of their structure.
  • Coir is another option for worm bin bedding. Coir is a natural material that is made from the husk of the coconut shell. It will need to be purchased if you want to use it. It holds moisture very well and is fluffy and nice to work with. You may have received a brick of it with your initial purchase of worms depending on where you ordered from. Coir works extremely well as worm bin bedding however, I do not use coir simply because I do not want to have to purchase anything for my worm composting bin.
  • Half Finished Pile Compost can also be used as worm farm bedding. If you
    Hot Compost Pile
     have an outdoor hot compost pile already then this is another free option. You want to use material from your hot compost pile that is about half way finished. Once it is totally finished it is too much like dirt. Remember, red wiggler composting worms live above the soil and cannot tunnel through dirt like night crawlers can. To use it as worm bin bedding, pull some half finished compost out of your pile, add some water, and add it to your worm composting bin. It will be mostly leaves and therefore will have some extra critters in it. I choose not to use pile compost in my worm bin because I would rather wait for it to finish and then use the hot pile compost in my vegetable garden.
Worm composting is a great way to turn a waste product (food scraps) into a nutrient rich plant fertilizer (worm poop!). Vermicomposting (worm composting) can easily be done indoors. Composting worms need moist bedding to live in. Almost any carbon source can be used as worm bin bedding, but some may fit your system better. The above list of worm bin bedding materials is not comprehensive. If you are having success using another source of worm bedding please share in the comments below.
 
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