Collection: Soil Biology & Microbial Activity Inputs
Compare products by nutrient analysis, formulation, application method and label directions.
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Sup'R Green Organic Chicken Manure (Composted) (25 lb)
Regular price $6.99Sale $6.99Unit price per -
Citrus & Fruit Tree Food 7-3-3 (4 lb bag)
Regular price $11.99Sale $11.99Unit price per -
Acid Mix 4-3-6 (5 lb Box)
Regular price $15.99Sale $15.99Unit price per -
Nutri-Rich 4-3-2 Fertilizer Pellets (50 lb)
Regular price $13.99Sale $13.99Unit price per -
Azomite Micronized (44 lb)
Regular price $27.99Sale $27.99Unit price per -
Peaceful Valley Organics All Purpose Pelleted Fertilizer 4-3-2 (50 lb)
Regular price $12.99Sale $12.99Unit price per -
Fish Bone Meal 4-12-0 (5 lb)
Regular price $15.99Sale $15.99Unit price per -
Tomato & Vegetable Food 4-5-3 (4 lb bag)
Regular price $11.99Sale $11.99Unit price per -
Azomite - Micronized (2 lb)
Regular price $9.99Sale $9.99Unit price per -
Soil Conscious Glacial Rock Dust - 50 lb - Organic
Regular price $30.99Sale $30.99Unit price per -
Peaceful Valley Organics Premium Earthworm Castings (1 cu ft)
Regular price $22.74Sale $22.74Unit price per -
Down to Earth Bio-Live Fertilizer (50 lb)
Regular price $104.99Sale $104.99Unit price per -
Down to Earth All Purpose Mix 4-6-2 (5 lb Box)
Regular price $15.99Sale $15.99Unit price per -
Peaceful Valley Organic Liquid Kelp
Regular price $8.99Sale $8.99Unit price per -
Kelp Meal 1-0.1-2 (4 lb Box)
Regular price $32.99Sale $32.99Unit price per -
Acid Mix (25 lb Bag)
Regular price $48.99Sale $48.99Unit price per -
Bio-Live 5-4-2 Fertilizer (4 lb)
Regular price $20.99Sale $20.99Unit price per -
Ultra Bloom 0-10-10 (15 lb bag)
Regular price $36.99Sale $36.99Unit price per -
Tomato & Vegetable Food 4-5-3 (15 lb bag)
Regular price $36.99Sale $36.99Unit price per -
Sure Start 4-6-2 (4 lb bag)
Regular price $11.99Sale $11.99Unit price per -
Alfalfa Meal (4 lb Box)
Regular price $13.99Sale $13.99Unit price per -
Down To Earth All Purpose Mix 4-6-2 (25 lb bag)
Regular price $47.99Sale $47.99Unit price per -
Ultra Bloom 0-10-10 (4 lb bag)
Regular price $11.99Sale $11.99Unit price per -
Humic Acids, Granular (5 lb Box)
Regular price $13.99Sale $13.99Unit price per -
Bio-Fish All Purpose 7-7-2 Fertilizer (5 lb)
Regular price $17.99Sale $17.99Unit price per -
Acid Mix 4-3-6 (1 lb Box)
Regular price $4.99Sale $4.99Unit price per -
Alfalfa Meal (40 lb Bag)
Regular price $55.99Sale $55.99Unit price per -
Rose, Flower & Bulb Mix 4-8-4 (5 lb Box)
Regular price $17.99Sale $17.99Unit price per -
Citrus and Avocado Fertilizer (50 lb)
Regular price $57.99Sale $57.99Unit price per -
Bio-Fish All Purpose 7-7-2 Fertilizer (50 lb)
Regular price $107.99Sale $107.99Unit price per -
Citrus Mix Fertilizer 6-3-3 (1 lb box)
Regular price $5.99Sale $5.99Unit price per -
Rose and Flower Mix 4-8-4 (25 lb Bag)
Regular price $53.99Sale $53.99Unit price per$0.00Regular price
Collection: Fertilizers That Boost Microbial Activity
Inputs for Soil Biology and Microbial Activity
Shop compost-based materials, microbial inoculants, humic products and fertilizers commonly used in soil-building programs. These products have different functions and should not be treated as interchangeable.
How to Choose
Identify whether you need an inoculant, an organic-matter source or plant nutrients. Review organism claims, storage requirements, analysis and label directions for the specific product.
Compare soil-life products, organic-matter amendments and humic products.