Coco Coir Bricks – Pack of 3 (650g each)

Natural Coco Coir Bricks for Worm Bins, Seed Starting & Gardening

Downswood Worms Coco Coir Bricks are a natural, peat-free growing medium suitable for worm keepers, gardeners and hobbyists alike. Each pack contains three compressed coco coir bricks weighing approximately 650g each (±10%). Simply add water to expand each brick into approximately 9 litres of loose, absorbent coco coir that’s ready to use wherever you need it.

Made from natural coconut fibres, coco coir is valued for its excellent moisture retention, free-draining structure and long-lasting performance. It’s ideal for creating healthy worm bedding, improving potting mixes and providing an excellent growing medium for a wide range of gardening applications.

At Downswood Worms, we use coco coir in our own worm bins as part of a balanced bedding mix to help maintain moisture, improve aeration and create an ideal environment for healthy worms.

Key Features

• Expands to approximately 9 litres per brick – simply add water to create a light, fluffy growing medium.
• Excellent moisture retention – helps maintain consistent moisture levels without becoming waterlogged.
• Promotes healthy aeration – the natural fibres improve airflow around plant roots and throughout worm bedding.
• Peat-free and renewable – made from sustainable coconut fibres as an environmentally friendly alternative to peat.
• Compressed for convenient storage – lightweight, space-saving bricks that expand only when required.

Ideal For

• Worm bins and worm bedding
• Seed starting and propagation
• Potting mixes and container gardening
• Improving garden soil structure
• Houseplants
• Terrariums and reptile enclosures

How to Prepare

1. Place one coco coir brick into a suitable container.
2. Add 3–4 litres of water and leave it to soak for around 15 minutes.
3. Gently break apart and fluff the coir.
4. If any areas remain dry or haven’t fully expanded, simply add a little more water until the brick has completely expanded into loose, fluffy coco coir.

Frequently Asked Questions

How much does each coco coir brick expand?

Each 650g brick expands to approximately 9 litres, giving you around 27 litres of coco coir per pack.

Is coco coir suitable for worm bins?

Yes. Coco coir is widely used as bedding for worms because it retains moisture well while remaining loose and well aerated. It can be used on its own or mixed with shredded cardboard and other bedding materials.

Can coco coir replace peat?

Yes. Coco coir is a popular peat-free alternative for seed sowing, potting mixes and improving soil structure. It’s renewable, easy to use and provides excellent water retention while allowing good airflow around roots.

Can I mix coco coir with compost?

Absolutely. Coco coir blends well with compost and other growing media, helping improve moisture retention, aeration and soil structure for a wide range of plants.