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Greenway Biotech Ammonium Sulfate Fertilizer 21-0-0 supplies 21% nitrogen as ammonium and 24% sulfur in a water-soluble form. Use it where your lawn or crop needs these nutrients, including suitable blueberry and acid-loving plant programs. Nitrogen supports leafy growth, while sulfur contributes to amino acids and proteins. Ammonium sulfate can also...

K-Mag Fertilizer 0-0-22 (sulfate of potash magnesia, also called langbeinite) is a naturally mined mineral fertilizer that delivers three nutrients in a single soil-applied product: 22% soluble potash (K₂O), 11% magnesium, and 22% sulfur, with less than 2.5% chloride and no nitrogen. Potassium supports fruit size, sugar movement, and stress tolerance; magnesium...

Organic Elemental Sulfur Powder is a CDFA-registered, finely milled elemental sulfur (≥98% S) for lowering soil pH and supplying sulfur as a plant nutrient. The fine particle size gives soil bacteria more surface area to colonize, which speeds the conversion to plant-available sulfate. Elemental sulfur is not directly acidic — soil bacteria...

Greenway Biotech Organic Alfalfa Meal 2.5-0-2.5 is a ground, plant-derived fertilizer for garden beds, rose beds, and soil preparation. It supplies nitrogen and potassium while adding organic matter to the soil. 2.5% total nitrogen: water-insoluble nitrogen from alfalfa meal, gradually made available through microbial activity. 2.5% soluble potash: potassium expressed as...

Feed in-ground roses, flowering perennials, annual beds, bulbs, and flowering shrubs with one dry, slow-release meal blend. Rose & Flower Fertilizer 4-7-5 combines fish bone meal, bone meal, feather meal, alfalfa meal, kelp meal, and Azomite, guaranteeing 4% total nitrogen, 7% available phosphate (P₂O₅), and 5% soluble potash (K₂O). Soil...

Potassium Sulfate Fertilizer 0-0-53 is a solution-grade, 100% water-soluble potassium fertilizer (K₂SO₄) that delivers 53% soluble potash (K₂O) and 17% sulfur in a single crystalline form. It is one of the most concentrated chloride-free potassium sources available. Potassium regulates water movement, enzyme activity, and sugar transport into developing fruit, supporting fruit size,...

Greenway Biotech Chelated Copper EDTA is a water-soluble copper fertilizer with a guaranteed 14% copper, all of it chelated by EDTA. It supplies one micronutrient for two jobs: correcting a copper shortage that a soil or tissue test has confirmed, and providing the copper line in a complete hydroponic or fertigation recipe. Copper is a cofactor...

<p>Greenway Biotech Chelated Iron DTPA is a fully chelated, water-soluble powdered iron fertilizer with a guaranteed 11% iron, all of it chelated by DTPA. It prevents and corrects iron deficiency (yellowing between green veins on the youngest leaves) in vegetable, field, tree, vine, and ornamental crops, and supplies the iron line in...

Strawberry Fertilizer 8-12-32 is a premium, 100% water-soluble specialty formula built specifically for strawberries — June-bearing, everbearing, and day-neutral. The moderate 8% nitrogen, enhanced 12% available phosphate, and very high 32% soluble potash are tuned to the strawberry's fruiting window, with EDTA-chelated iron, manganese, zinc, and copper plus boron and molybdenum....

Greenway Biotech Magnesium Citrate Powder is a single-ingredient, unflavored magnesium supplement in loose-powder form: trimagnesium citrate with no flavors, sweeteners, fillers, or flow agents. Stir one level teaspoon (about 3 g) into a glass of water or juice with a meal for at least 330 mg of magnesium, 79% of the Daily Value. The...

Greenway Biotech Magnesium Oxide Powder is heavy-grade magnesium oxide meeting the USP and FCC monographs, a single-ingredient powder with no flavors, sweeteners, fillers, or flow agents. It is the most concentrated magnesium supplement form: at least 520 mg of elemental magnesium per gram, so a quarter of a level teaspoon (about 0.4 g)...

Monopotassium Phosphate (MKP) 0-52-34 is a nitrogen-free, 100% water-soluble P-K fertilizer — a single technical-grade crystal (potassium dihydrogen phosphate) supplying 52% available phosphate (P₂O₅) and 34% soluble potash (K₂O) with no nitrogen and no fillers. The zero-nitrogen profile is what defines MKP: at flowering and fruit set it delivers concentrated phosphorus and...

Organic Cinnamon Leaf Essential Oil is 100% pure, certified-organic Cinnamomum verum from Sri Lanka — the ancestral home of true cinnamon. Steam-distilled from the leaves (not the bark), the oil is dominated by eugenol (68-87%), giving it a warm, clove-like aroma distinct from the sharp character of cinnamon bark oil. Best...

Greenway Biotech Copper Sulfate Crystals are copper sulfate pentahydrate (CuSO₄·5H₂O), 99% pure, guaranteeing 25% copper (Cu), so each pound supplies a quarter pound of copper. The fine blue crystals dissolve readily in water and are sold as a copper fertilizer for correcting a deficiency confirmed by plant tissue analysis, with a soil test on...

Manganese deficiency and iron deficiency look almost the same, so test before you treat. Greenway Biotech Chelated Manganese EDTA is a water-soluble powder guaranteeing 13% manganese, all of it held by EDTA, for preventing and correcting a confirmed manganese shortage. The manufacturer’s directions for this 13% manganese EDTA run 4 to 12 lb...

Iron chlorosis is usually a pH problem, not a missing-iron problem, so the chelate matters as much as the iron. Greenway Biotech Chelated Iron EDTA is a water-soluble powder guaranteeing 13.2% iron, all of it held by EDTA — more iron per pound than DTPA or EDDHA chelates, and the right choice for...