Why Do Compost Worms Leave a Bin?

Compost bins can vary greatly in size.

According to Washington State University, three types of worms are best for composting: the Eisenia foetida, Lumbricus rubellus and Lumbricus terrestris. Compost worms thrive best in compost conditions that are moist and warm. Under amicable conditions, worms will not leave a compost bin, and will enjoy working for you.

Facts

Worms prefer warm, moist conditions because they breathe through their skins. Without proper moisture, worms will shrivel up and die. Worms may leave a compost bin in order to find more moist conditions.

Considerations

Since direct sunlight may decrease moisture content, keep the compost bin in a shady area. Additionally, compost worms do not tolerate direct sunlight. Place a bright light over the bin to encourage worms to stay put.

Features

Gently rotate the compost heap to keep moisture levels equal throughout the bin. Rotating also encourages aeration.

What Worms Eat

Worms preferred decayed food to fresh, and will eat that first.

Worms eat about half their body weight each day, so for every 1 pound of worms you will need 1/2 pound of food. Worms left without food for a long time may seek food elsewhere.

Benefits

Worms inside compost heaps help to break down the organic materials quicker than normal. Worm feces also contribute to the nutrients found in compost materials.

References

• Washington State University: Composting with Redworms