Vermicomposting

Vermicomposting (worm composting) is an environmentally-friendly way to turn your food waste into nutrient-rich castings for your plants or garden beds.

Learn how easy it is to start composting with red wiggler worms and check out how to start your own bin at home with the resources below!

Creating Your Worm Bin

• Build Your Own Worm Bin
• DIY: How to build your own in-ground worm bin
• Home Composting Resources (Where to purchase bins, worms, and supplies)
• Learn About Compost Bin Discounts
  • Compost Bin Voucher Program for Unincorporated County Residents
  • Compost Bin Voucher Program for City of San Diego Residents

Maintaining Your Worm Bin

• "Compost It Yourself" Guide (See the full resource here, or jump to the section you need below)
  • What is Composting and Why Do it?
  • Choose a Compost Style that Works for You
  • Vermicomposting Basics (composting with worms)
  • Harvesting and Using your Compost
  • Compost Troubleshooting & Additional Resources
• Worm Care Guide
• Wiggling Through Winter
• Squiggling Into Summer
• Wiggling Through Winter
• Red Wiggler Reproduction
• Critters In Your Compost!

Using Finished Castings

• 5 Ways to Harvest Worm Castings
• Compost Tea, Worm Tea, & Leachate

FAQs From the Rotline

• Why do I need bedding in my worm bin?
• Are super dense worm castings still usable?
• What are the white things in my worm bin?