This high-performance formula features a 50/50 mix of worm castings and coco coir, enhanced with a custom nutrient pack formulated specifically for the legal cultivation of dung-loving mushroom species. It’s the same substrate that fueled the award-winning strain crowned at the Denver Psychedelic Cup 2024 — a true benchmark for consistency and potency.

Clean, nutrient-rich, and eco-conscious, HB4 offers a manure-free alternative to traditional dung-based substrates without compromising results.