BuildASoil Potting Soil Recipe 3.0 is one of BuildASoil’s richest and most complete compost-based soil blends, formulated to deliver sustained nutrition, strong microbial activity, and consistent results across a full grow cycle. Built using Logan Labs soil testing, this recipe balances high nutrient density with biological stability, making it both powerful and forgiving.
The foundation of Recipe 3.0 starts with high-quality compost, worm castings, and peat moss, providing organic matter and microbial habitat. Aeration is handled through pumice, rice hulls, and volcanic tuff, helping maintain oxygen flow and proper drainage in containers. The nutrient profile is supported by a diverse range of organic inputs and mineral amendments designed to release nutrients gradually over time.
Ingredients like kelp meal, camelina meal, alfalfa meal, malted barley, fish bone meal, mustard meal, and rice bran provide slow-release nutrition and feed soil biology, while volcanic basalt, gypsum, limestone, and biochar contribute mineral diversity, structure, and long-term soil performance.
Recipe 3.0 is often compared to traditional “super soil” mixes, but with a cleaner ingredient list and a stronger emphasis on microbial life and balance. While many growers can run this soil with minimal inputs, longer cycles or heavy-feeding plants may benefit from top-dressing or light soil maintenance as the grow progresses.
As with all BuildASoil products, this soil is not sterilized, ensuring a living ecosystem full of beneficial organisms ready to support healthy root development and vigorous plant growth.
Because Recipe 3.0 is nutrient-rich, avoid overwatering early and give seedlings time to establish before pushing growth. For longer runs, monitor plant demand and plan to top-dress lightly rather than adding bottled nutrients.