What to Feed Your Worms: A Complete Food Guide

One of the most common questions new worm farmers ask is simple:

“What exactly can my worms eat?”

It’s a great question. Because while earthworms are powerful decomposers, they’re not tiny rubbish bins. Feeding them correctly is the difference between a thriving, productive worm farm—and a smelly, frustrating mess.

This guide will walk you through exactly what to feed your worms, what to limit, and what to avoid entirely.

🪱 First, Understand How Worms Eat

Worms don’t actually “bite” into food the way we do. Instead:

• Microbes begin breaking down the food.

• Worms consume the softened, decomposing material.

• The result is nutrient-rich vermicast (worm castings).

💡 This means worms prefer food that’s starting to soften—not fresh, hard chunks.

✅ The Best Foods for Worms (Worm Favourites)

These items break down easily and create a healthy worm environment.

🍌 Fruit Scraps

• Banana peels

• Apple cores

• Pear scraps

• Melon rinds (cut small)

💡 Chop large pieces into smaller chunks to speed things up.

🥬 Vegetable Scraps

• Carrot peels

• Potato peels

• Pumpkin skins

• Lettuce and spinach leaves

• Broccoli stalks

These are ideal because they’re nutrient-rich and decompose well.

☕ Coffee Grounds & Tea Leaves

• Used coffee grounds (including filter paper)

• Loose tea leaves

• Tea bags (only if plastic-free)

Coffee grounds add nitrogen and worms love them.

🥚 Crushed Eggshells

Eggshells provide grit (worms don’t have teeth!) and help balance acidity.

💡 Crush them finely before adding.

⚖️ Foods to Feed in Moderation

These aren’t “bad,” but they can cause issues if overdone.

🍊 Citrus

Small amounts are okay. Large quantities make the bin too acidic.

🧅 Onion & Garlic

Strong smells and antimicrobial properties can disrupt the bin if added heavily.

🍞 Bread, Rice & Pasta

Feed sparingly. These can go mouldy quickly and attract pests if overfed.

❌ What NOT to Feed Your Worms

Avoid these completely in a standard worm farm:

🚫 Meat

🚫 Dairy

🚫 Oily or fried foods

🚫 Spicy foods

🚫 Salty foods

🚫 Pet waste

These create odours, attract pests, and disrupt the worm ecosystem.

🌱 How to Feed Properly

Knowing what to feed is only half the story. Here’s how to do it right:

1. Bury the Food

Always bury scraps under bedding to reduce flies and smell.

2. Feed Small Amounts

Start with 1–2 handfuls at a time.

3. Rotate Feeding Zones

Add food in different areas each time to prevent overload in one spot.

4. Watch and Adjust

If food remains after a week, you’re feeding too much.

💡 A healthy worm farm smells earthy—not sour.

🧠 Pro Tips for Faster Composting

• Chop scraps small

• Freeze scraps before feeding (this breaks cell walls and speeds decomposition)

• Balance “greens” (food scraps) with “browns” (cardboard, paper, dry leaves)

💚 The Compost Kitchen’s Approach

At The Compost Kitchen, we work with carefully balanced inputs to ensure:

✅ Healthy worm colonies

✅ High-quality vermicast

✅ Odour-free systems

✅ Maximum waste diversion

If you’d rather not manage the balance yourself, we offer:

• Worm starter kits

• Ongoing support

• Weekly food waste collection

Final Thought

When you feed your worms correctly, something powerful happens.

What used to make you feel guilty in the bin—banana peels, coffee grounds, veggie ends—becomes the beginning of something regenerative.

Less waste. More life.

And it all starts with knowing what’s on the menu.