| Liquid Fish Fertilizer | Amino acids, peptides, organic nitrogen, phosphorus, potassium, trace minerals (Fe, Zn, Mn, Cu), fatty acids | ~5-1-1 to 4-1-1 | Rapid microbial stimulation; nitrogen mineralization; improves vegetative growth | Soil drench: 1–2 tbsp per gallon water every 2–3 weeks | Foliar feeding, compost activator, transplant solution |
| Kelp Extract | Cytokinins, auxins, gibberellins, alginates, potassium, iodine, magnesium, trace minerals | ~1-0-2 | Plant hormone stimulation; stress resistance; root initiation | Foliar spray: 1–2 tsp per gallon water every 2 weeks | Seed soak stimulant, transplant shock reduction |
| Compost Tea | Microbial biomass, enzymes, organic acids, soluble nitrogen compounds, humic substances | Variable (typically <1-1-1) | Introduces beneficial microbes; improves rhizosphere biology; disease suppression | Soil drench: 1–2 gallons per 100 sq ft | Foliar microbial inoculation; soil restoration |
| Mycorrhizae Inoculant | Arbuscular mycorrhizal fungi spores (Glomus spp.), fungal hyphae fragments, carrier minerals | Not NPK based | Expands root nutrient absorption; improves phosphorus uptake; drought tolerance | Direct root contact: 1–5 g per plant root zone | Seed coating, transplant root dip |
| Organic Soil Amendments | Organic carbon, nitrogen compounds, phosphorus minerals, potassium salts, humic substances | Variable depending material (2-2-2 typical compost) | Long-term nutrient release; improves soil structure; increases microbial diversity | 1–2 inches incorporated into top 6 inches of soil | Raised bed filling, soil remediation |
| Biochar | Stable carbon matrix, porous aromatic carbon rings, mineral ash, surface charge sites | Typically 0-0-0 | Improves cation exchange capacity; microbial habitat; moisture retention | 5–10% by soil volume when mixed with compost |