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Organic Fertilizer and Soil Amendment Guide Some information below adapted from The Chemical-Free Lawn by Warren Schultz. General soil care objective Organic solutions Promote large blooms and fruits Bat guano (4-13-1) Alfalfa meal (great for roses, quick release). Pro-Gro (5-3-4) Bio-Magic 0-0-12 Compost Condition soil Stress-X liquid seaweed Build plant hardiness and resistance to disease, pests and drought biostimulant (great for lawns) Promote root growth in transplants and seedlings Phosphate rock Pro-Start Myco-Magic Bone meal Bat guano Add balance blend of main macro-nutrients (nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur) plus greensand to provide important micronutrients Pro-Gro (5-3-4) Winterize plants Pro-Start Enhance composting process Crab meal Alfalfa meal (breaks down carbonaceous material) Blood meal Bind sandy soil Colloidal rock phosphate Loosen clay soil Greensand Sphagnum peat moss Soil deficiency Symptoms in turfgrass How to correct Acidity Soil too acid: phosphorus, calcium, magnesium Aragonite (sweetens soil without adding availability reduced. magnesium) Soil too alkaline: iron, zinc, manganese and copper Dolomitic limestone (pelletized or powder) not available. Boron Slow growth, pale green tips, bronze tint Boron 10% Boron 14.3% Calcium Reddish-brown leaves, may curl and die Gypsum (for alkaline soils) Calcium limestone flour Phosphate rock Fertrell CaFe 9-1-4 Dolomitic limestone (for acid soils) Copper Yellow and stunted leaves, tips die Copper sulfate Reduce nitrogen fertilization Iron Pale leaves, turning yellow Iron (chelated 10%) Fertrell CaFe 9-1-4 Iron sulfate Reduce phosphorus fertilization Magnesium Yellow stripes on leaves, turning red Epsom salt (for alkaline soils) Sul-Po-Mag Dolomitic limestone (for acid soils) Manganese Yellow spots on leaves, withered at tips Manganese sulfate Molybdenum Yellow and withered leaves Dolomitic limestone (for acid soils) Blood meal (quick release) Cotton seed meal (advisory:acidifies soil) Corn gluten meal 10-0-0 Cottonseed meal 6-1-1 Crab meal (slow release) Feather meal (slow release) Leather meal (slow release) Nitrogen Light green or yellow-green leaves, may start dying at tips Phosphorus Raise pH (reduce acidity) Bone meal (slow release - good for new Thin sod, thin curled leaves, dusky blue-green with plants/transplants) purple tint in cool weather Phosphate rock Bat guano Potassium Yellow tips on leaves, may turn brown and die at tips Kelp meal (quick release, good for fruit/flower production) Sul-Po-Mag Granite meal Greensand Greensand Plus (0-0-17)for faster availability Wood ashes (caution: too much can raise the pH level too high) Sulfate of potash (0-0-52) Sulfur Yellow leaves Phosphate rock Gypsum Elemental sulfur Zinc Small and yellow leaves Zinc sulfate Zinc chelates Trace elements/minerals Microbial activity Kelp meal (quick release, good for fruit/flower production) Greensand Granite meal Stress-X liquid seaweed biostimulant Bio-Magic 0-0-12 Nature's Turf 8-1-9 Crab meal Bio-Magic 0-0-12 Yuccah Compost Organic Garden Supplies - Organic Fertilizers - Organic Pest Control - Organic Weed Control Extremely Green Gardening Company LLC ©