Buying in bulk or for a business? Trade pricing from £8.50/brick ex VAT — pay-now pallet packs (no account needed) and 30-day terms for approved accounts. See Trade Pricing → This product is a raw coco coir brick — the ideal base substrate for growers who want to create their own custom growing mixes. Blend it with perlite, vermiculite, or your preferred amendments to suit any plant. Prefer a ready-made option? Our plant-specific growing mixes (coming soon) are pre-blended and ready to use straight from the bag. Good to know: Coco coir is also known in the trade as “coco peat” or “coir pith” — it is the fine, spongy material from coconut husks. Despite the name, it contains absolutely zero peat and is 100% peat-free. One 5kg brick expands to 75 litres of premium, ready-to-use coco coir — calcium-buffered, peat-free. Blue Apple Garden’s buffered coco coir is engineered for consistent results. Add 20 litres of clean water, allow 20–30 minutes to fully expand, and your growing medium is ready. No rinsing. No pre-treatment. No conditioning required. Why Buffered Coco Coir? Standard coco coir aggressively absorbs calcium and magnesium from your nutrient solution — starving plants before they establish. Our bricks are pre-saturated with calcium and magnesium during production, so those exchange sites are already occupied when the product reaches you. Your plants access nutrients from day one, with no lock-out and no adjustment period. Key Features Expands to approximately 75 litres from one 5kg compressed brick Easy to store — the dry brick is a compact 300 × 300 × 140 mm, so 75 litres of growing medium sits on a shelf instead of filling your shed with bulky bags Washed and calcium-buffered — flushes out excess salts and prevents nutrient lock-out from day one Stable pH 5.5–6.5, ultra-low EC — ready to use straight from the pack Naturally resistant to mould — supports healthy root development (natural lignin structure) Low sodium — gentle on salt-sensitive plants and seedlings Superior water retention and airy texture — keeps compost moist while preventing waterlogging 100% peat-free and biodegradable — made from renewable coconut husk fibre Compatible with all liquid nutrients, organic feeds, and hydroponic systems Stocked and dispatched from our UK warehouse Shrink film: LDPE ≥ 30% recycled — widely recyclable How to Use Place the brick in a large bucket or container. Add 20 litres of clean water (warm water speeds expansion). Wait 20–30 minutes while the brick swells (expands to 75L). Fluff thoroughly with a fork or hand tool until light and even. Use alone or blend with perlite (70:30 ratio) for improved drainage and aeration. Begin feeding with a balanced nutrient solution from week one. Suitable For Containers and pots, raised beds, propagation trays, seedlings and cuttings, hydroponics (DWC, NFT, Dutch Bucket), and indoor growing environments. Also the moisture-holding seed cover for lawn repair and overseeding — one brick covers 15–25 m² of freshly sown lawn, or well over a hundred bare patches. Spring containers: potatoes in bags (one brick fills four 40-litre bags), hanging baskets and strawberries in pots. Beyond the garden: peat-free bulb fibre for indoor bulbs, a storage medium for dahlia tubers, a washed additive-free reptile and terrarium substrate, wormery bedding and the medium for composting toilets — see all 30+ uses. Technical Specifications Net weight: 5kg compressed Brick dimensions: 300 × 300 × 140 mm (dry, compressed) Expanded volume: approximately 75 litres pH: 5.5–6.5 EC: Ultra-low Pre-buffered: Yes (calcium and magnesium) Format: Single compressed brick Shelf life: 24 months from manufacture when stored correctly Prefer a Ready-Made Mix? If you'd rather skip the blending, our plant-specific growing mixes are formulated for individual plant types — houseplants, tomatoes, herbs, orchids, cacti, and seed starting. Pre-blended, peat-free, and ready to use. View the range → 🧮 How Much Do You Need? Calculate the exact amount for your raised bed, pot, or grow bag — including mix ratios and water needed. Open Calculator → Not sure how much you need? Use our free calculator to get the exact quantity for your garden. Coco Peat Calculator → Buffering specification Every batch is calcium-buffered at source and quality-checked before dispatch. This pre-saturates the cation-exchange (CEC) sites with calcium so your fertiliser-supplied calcium and magnesium stay plant-available, and keeps electrical conductivity (EC) low for predictable nutrient uptake. pH: 5.5–6.5 (ideal for most plants) Electrical conductivity (EC): below 0.5 mS/cm in fresh hydrated coir Buffering: calcium-buffered at source (not buffered at home; no Cal-Mag pre-treatment required) Source: direct import from Kerala, India — no middlemen Quality checks: EC and pH checked before dispatch Want to understand the chemistry? Read how buffering works.
