Nutrifield Coco Coir Mega Brick 11lb – Organic Coconut Coir Block, Pre-Washed, Buffered, RHP Certified

Overview

Nutrifield Coco Coir Mega Brick is a lightweight, compressed block of premium coconut coir designed to expand into a clean, peat moss–free growing medium. Each 11lb (5kg) brick is easy to ship, store, and handle, making it a practical substrate for a wide range of indoor and outdoor gardening tasks.

When hydrated, the block breaks apart into a soft, fibrous, airy media that helps roots breathe while retaining moisture. The media is rinsed and buffered, with pH stabilization and a very low salt index, so it provides a stable base for plants without introducing excessive salts.

Key benefits

• Lightweight, compressed blocks that are portable and space efficient  expand easily into a fluffy growing medium.
• High water holding capacity with drainage, helping plants take up moisture without becoming waterlogged.
• RHP certification guarantees consistency, pest- and disease-free material, thorough rinsing, and calcium pre-buffering for pH stability.
• Peat moss–free and made from organic coconut husks, offering a renewable, sustainable substrate.
• High cation exchange capacity supports nutrient availability, making it suitable for seeds, cuttings, and young plants.

Practical uses

• Seed starting and rooting cuttings in pots or trays, indoors or outdoors.
• Ideal for micro greens, houseplants, and container gardening where a light, well-draining medium helps root development.
• Compatible with hydroponic setups as a soilless base or in combination with other substrates.
• Suitable for mushrooms and other edible crops, depending on your growing system and supplemental nutrients.

Care and setup tips

To use, hydrate the compressed brick with water until it expands into a loose, airy media. Gently fluff and rehydrate as needed, then mix with perlite or vermiculite if you want extra drainage or aeration. While it’s pre-buffered with calcium, monitor EC and maintain a balanced feeding program to support sustained growth. The coconut coir is designed to break down naturally over time, providing a renewable base for ongoing plant projects.