Do Composting Worms Pose a Threat as Invasive Species? - Red Worm Composting
Facts About Nightcrawlers
European Night Crawlers (As Breeders) – Worms For Worm Farms & Education
Introducing the Earthworm - Napa Master Gardener Column - ANR Blogs
Composting with Worms OSU Extension Service
Composting with Worms - CSWD
How to Identify the European Nightcrawler Composting Worm - Dengarden
Red Wiggler Composting Worms: Everything You Need to Know
Pheretimoid jumping worms confirmed to be in Ontario; can destroy topsoil - Clean North
Scouring your Worms! - An Introduction.
1000 Red Wigglers Composting Worms VERMI Indoor Compost Worm castings Live : Patio, Lawn & Garden
Differences Between Red Wrigglers & Earthworms
Using Earthworms to Improve Soil - Grit