Why You Should Never Add Grass Clippings to Your Wormery

September 22, 2026

by Wiggly Wigglers

Why You Should Never Add Grass Clippings to Your Wormery

It’s tempting to throw in your lawn clippings, but they don’t belong in your worm composter.

Grass Causes Trouble

Fresh grass releases heat and ammonia as it breaks down – both of which can harm your worms. Leaves, especially in large quantities, can also mat together and slow the composting process.

Better Options

Stick to soft veg peelings and brown materials like shredded paper or cardboard. Save the grass and leaves for your traditional compost heap instead.

Quick Tip: When in doubt, leave it out – your worms will thank you.

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🌱 Over the Compost Heap…

A healthy garden starts beneath your feet.

— A Wormsworth