Earthworm Temperature Tolerance and Biology for a Student Project

A 6th‑grader asks about earthworm temperature limits and effects on reproduction and feeding.

Temperature Range

Earthworms thrive at 50–75°F (10–24°C). They cannot regulate body temperature; respiration and metabolism increase with warmth, raising food requirements. Cold slows them down. Different species are adapted to different climates and soil types.

Reproduction Data

Specific data linking temperature to reproduction rates isn't readily available, but generally, optimal temperatures support higher activity and cocoon production.

Good luck with your project!

— Mack Jean, Master Gardener, Tennessee