Soil Fertilizer
Our 4 step lawn care program products. Also for use in vegetable gardens, perennial gardens and potted plants.
Step 1
OS-Spring™ (9-0-0) 50 lbs.
Granular corn gluten meal fertilizer which contains no phosphorus or potassium. Discourages conditions that support crabgrass, dandelions and other broadleaf weeds. Adds slow-release nitrogen derived from safe, natural plant proteins. Fortifies soil with beneficial microbes to improve soil biology.
STEP 2
OS-Green™ (11-0-0) 50 lbs.
Granular high nitrogen all-purpose summer fertilizer derived from bone and feather meals that works well with a liquid biological program. This product make for an excellent fungal food that can stimulate beneficial biological activity.
Step 3
OS-Summer™ (6-0-3) 50 lbs.
Granular, all-purpose, summer fertilizer derived from soy and alfalfa that works well with a liquid biological program. Nutrients and slow-release nitrogen from this product are derived from de-hulled soybean meal, alfalfa, distillers dried grains, sulfate of potash, and molasses.
Step 4
OS-Fall™ (6-2-12) 50 lbs.
Granular product containing soy meal, lava rock, humate, dextrose, kelp meal, gypsum (for calcium), humic acid, iron sulfate, soft rock phosphate, potassium sulfate, ammonium sulfate, sulfur, and bacteria. Upon application it releases stored nutrients, promotes beneficial microbial activity, encourages root development, and conditions the soil. In fall applications it increases a plant’s stored sugar reserves which helps the plant overcome challenges of over-wintering.
Soil Conditioners & Amendments
OS-Cal™ (0-5-0) 50 lbs.
calcium 7%, sulfur 2%, iron 1.7%
OS-Cal is a restorative formula that can reduce the build-up of salts in all types of soil simply by releasing and buffering the sodium. Its all-natural, concentrated blend of humates, soft rock phosphate and complex calcium provides essential humic, fulvic, and amino acids that enhance soil conditions for healthier roots and plants.
OS-Conditioner™ 50 lbs.
sulfur 1.5%, iron 2.25%, humic acid 45%
This soil conditioner is an OMRI-listed, certified organic, granular product and is the foundation of all of our humic acid products. Its essential humic, fulvic, and amino acids naturally promote enhanced soil activity for healthier roots and plants. The unusually high carbon content guarantees balanced carbon-to-nitrogen ratios necessary for maintaining a healthy soil.

