Kempf Compressed Coco Coir Pith Block – 10 lb, Expands to 18 Gallons, Natural Potting Mix

Premium coco coir for versatile gardening

Meet a compact, natural growing medium that grows with your plants. The Kempf Compressed Coco Coir Pith Block starts as a tight 10 lb block and expands into a fluffy, breathable base capable of yielding up to 18 gallons of potting mix. Its earthy aroma and fibrous texture invite a tactile, hands-on feel that many gardeners associate with healthy root systems and well-hydrated media.

This block is designed for ease and reliability in real-world gardening scenarios. Hydration releases a light, airy substrate that supports steady moisture without waterlogging, making it suitable for everything from seedlings to mature container setups. The final mix retains moisture when needed and provides air pockets for roots to breathe, helping your plants establish strong roots from day one.

Key performance you may notice

• Exceptional water retention: holds up to 10 times its weight in water while still draining excess moisture, reducing the frequency of watering.
• Air-rich structure: the fibrous matrix creates pores for oxygen flow, helping prevent soil compaction and supporting root development.
• Nutrient-friendly & balanced: high cation exchange capacity promotes nutrient absorption; neutral pH (5.5–6.5) and low EC simplify use with a wide range of plants.
• Pure & clean composition: pre-rinsed, triple-filtered, and screened to remove sand, rocks, and impurities for a premium, odor-free experience.

Planting versatility

• Perfect as a standalone potting soil for containers, raised beds, and balcony gardens.
• Excellent as a soil amendment to improve moisture retention and aeration in existing mixes.
• Suitable for mulch, hydroponic media, seed starting, and a wide variety of plants including orchids, succulents, vegetables, and more.
• References in hobby setups such as reptile bedding or composting applications, thanks to its clean, natural composition.

Eco-conscious gardening

Derived from coconut by-products that would otherwise be discarded, this coir helps reduce peat moss dependence. It is biodegradable, renewable, and designed to support sustainable gardening without compromising performance.

Getting started

Hydrate the block with clean water or a preferred nutrient solution, then fluff and blend into your chosen mix. Store in a cool, dry place to preserve freshness and consistency for future uses.