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Participant Age: 
7 to 12
Approximate Cost: 
Under $10
Date submitted: 
Physical Challenge: 
Make a Wormarium
Make a worm-friendly habitat in a glass container so you can observe them.
  • 2 to 3 earthworms
  • 1 large, wide-mouthed jar or an old fish bowl
  • Handful of dead leaves
  • 1 small paper bag
  • 2 to 3 cups peat
  • 2 to 3 cups sand
  • Hand shovel
  • 2 to 3 cups topsoil
  • Spray bottle
  • Water
Step 1
Gather your supplies.
Some supplies you can gather from your backyard, such as dirt and dead leaves. Others you might have to purchase, such as peat or sand.
Step 2
Pour the soil in the glass jar or bowl.

Don't push down on the soil after you pour it in. It needs to stay "fluffy" so the worms can easily move around.

Next pour in the peat, and finally the sand. Do not mix the layers.

Step 3
Go find worms.

Dig a hole until you find some worms.

Place the earthworms on top of the soil, peat, and sand layers.

Cover the earthworms with dead leaves.

Step 4
Spray inside the wormarium with water.

Make sure it is moist but not soaking wet.

Cover the jar with a paper bag and put the jar in a cool place.

Step 5
Watch and wait.
Check the jar each day, watering the soil when it looks dry.  Watch the layers in the jar shift as the earthworms tunnel through the soil. Look for mounds of rippled soil on the surface. Tell your child that these mounds (called casts) are the earthworms' poop.  After a few weeks, when you have finished watching the earthworms, release them in an outdoor garden.
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