Wondering what the best worms for composting are? Not all worms are created equal—at least not when it comes to composting. While earthworms in your backyard might be great for aerating soil, they’re not cut out for the demanding job of processing food scraps. That’s where composting worms come in.
This guide will help you choose a species for a simple DIY tote, a store-bought worm bin, or a larger setup. If you need help choosing a home for them, start with my beginner worm-bin guide. Some supplier links below are affiliate links; I may earn a commission at no added cost to you.
The MVP: Red Wigglers (Eisenia fetida)
Red wigglers are the gold standard of composting worms. These hard-working critters are the Beyoncé of the worm world—efficient, versatile, and resilient.
Why They’re the Best:
- Thrive in organic waste.
- Reproduce quickly.
- Handle a wide range of temperatures (ideal: 55–77°F).
Pro Tip: You do not have to buy a pound of worms to begin. Start with a manageable population and a prepared bin, feed lightly, and increase the scraps only as the worms settle in and consume earlier feedings. A larger colony can process more, but adding too many worms or scraps at once makes the setup harder to manage.
The Runner-Up: European Nightcrawlers (Eisenia hortensis)
Slightly larger than red wigglers, European nightcrawlers are a great choice if you’re looking for dual-purpose worms. In addition to composting, they’re fantastic for fishing bait.
Why They’re Great:
- Process food scraps efficiently.
- Tolerate cooler temperatures better than red wigglers.
- Great for outdoor bins or worm towers.
Fun Fact: European nightcrawlers are also called “super reds” due to their larger size.
The Wild Card: Indian Blues (Perionyx excavatus)
Indian blues (Perionyx excavatus) can compost quickly in warm conditions but are less forgiving of cool temperatures and changing bin conditions. For most first-time worm farmers, red wigglers are the easier choice.
Why They’re Unique:
- Work quickly to process food scraps.
- Thrive in warm, humid environments.
- Require careful monitoring to prevent escape (they’re active explorers).
Pro Tip: Use Indian blues only if you can maintain a consistently warm bin environment.
Comparison Chart
| Worm Type | Ideal Temperature | Processing Speed | Special Traits |
|---|---|---|---|
| Red Wigglers | 55–77°F | High | Best all-around composting worm. |
| European Nightcrawlers | 50–75°F | Medium | Great for compost and fishing. |
| Indian Blues | 70–85°F | Very High | Thrive in tropical climates. |
Where to Buy Composting Worms
When sourcing worms, quality matters. Look for trusted suppliers like:
- Meme’s Worms: A reliable source for red wigglers and other species. Our favorite supplier for both Red Wigglers & European Nightcrawlers
- Local Garden Centers: Check for composting worms in your area.
- Online Retailers: Many reputable sellers ship worms directly to your door.
FAQs About Composting Worms
Q: Can I use regular earthworms for composting?
Most common garden earthworms live in mineral soil and are not well suited to a shallow, food-scrap-rich compost bin. Use a composting species such as red wigglers instead of collecting random worms from your yard.
Q: How many worms do I need to start?
There is no single required number. You can begin with a smaller starter population in a prepared tote and let it grow, or begin with a larger group if your bin and feeding plan can support it. Feed according to what disappears, not a promised daily consumption rate.
Q: What if my worms die?
Don’t panic! Evaluate the conditions in your bin (moisture, temperature, food) and adjust. You can always restock from a trusted supplier.
Some Useful Worm Composting Links
- Learn How to Start Worm Composting.
- Explore Troubleshooting Common Worm Bin Problems.
- Discover 5 Easy Ways to Use Vermicompost in Your Garden.
Final Thoughts On Best Worms for Composting
For most beginners, I would choose red wigglers. European nightcrawlers make sense if you want composting worms that can also serve as fishing bait. Indian blues are worth considering only when you can manage their preference for warmth. Whichever species you choose, the daily routine matters most: breathable bedding, wrung-out-sponge moisture, and patient feeding.
Ready to get started? Grab your worms, set up your bin, and let the composting magic begin!
