Organic compost and fertilizers
High quality compost comes from a carefully tended compost pile with the right mixture of brown and green matter, water, and oxygen. When all is working optimally in a pile it will reach high temperatures of 80C. The high heat will kill most pathogens and weed seeds, but the beneficial mycorrizhae will survive. There is a natural "cooling off" period and then the compost is "finished compost" or "humus" and can be put to use. Down2earth Creations source top quality soil enrichment products from reputable suppliers.