Greenway Biotech, Inc.

Chelated Fertilizers Correct micronutrient deficiencies fast — chelated iron, zinc, manganese & copper Chelated fertilizers help keep iron, zinc, manganese, and copper soluble and available to plants — especially in neutral to alkaline soils where these micronutrients become tied up and difficult for roots to absorb. In high-pH conditions, chelated forms can significantly improve availability compared to non-chelated sulfate alternatives. Greenway Biotech chelated micronutrients are water-soluble and...

Water Soluble Fertilizers Water-soluble fertilizers for soil, hydroponics, foliar spray, and drip irrigation Water-soluble fertilizers dissolve completely in water and are designed for direct delivery to plant roots or leaves — without waiting for soil microbial breakdown. Whether you're looking for a water-soluble fertilizer for vegetables, a complete nutrient program for hydroponics, a foliar spray to correct a deficiency mid-season, or a reliable fertigation product for drip irrigation, every product in this...

Hydroponics Nutrients Hydroponic growing gives you precise control over every nutrient your plants receive — but that precision only works if you start with the right fertilizers. Greenway Biotech's hydroponic nutrient lineup covers everything you need: crop-specific base fertilizers formulated for your exact plant, calcium and magnesium supplements to prevent deficiencies, chelated micronutrients that stay available across a wide pH range, and bloom boosters to maximize fruit quality and yield. All products ...

Fertilizers Fertilizers for every crop, soil type, and growing method Greenway Biotech has manufactured and sourced high-quality fertilizers from Madera, California since 1989. Our catalog covers the full spectrum of plant nutrition — from fast-acting water-soluble formulas for hydroponics and foliar feeding, to slow-release organic amendments that build long-term soil health, to precision chelated micronutrients for pH-challenging soils. Products in this collection are CDFA registered, third-party...

Tomatoes & Vegetables Fertilizers for tomatoes, peppers, eggplant, squash, and every fruiting vegetable in your garden or hydroponic system. Fruiting crops carry heavy nutrient demands: phosphorus for root establishment and fruit set, high potassium through ripening, and steady calcium and magnesium to prevent blossom end rot. This collection pairs our crop-specific Tomato Fertilizer 4-18-38 with the supporting nutrients a complete program needs — Calcium Nitrate, Cal-Mag Plus, Epsom Salt, and chelated micronutrie...

Pepper & Herbs Balanced, potassium-rich nutrition for peppers, basil, cilantro, and culinary herbs. Peppers set more fruit and ripen with stronger flavor when potassium stays high through the season, while herbs respond to moderate, even feeding that builds oil content without forcing weak growth. Pepper and Herb Fertilizer 11-11-40 anchors this collection with a full chelated micronutrient package, supported by Calcium Nitrate for structure, Epsom Salt for magnesium, and Monopotassium Phosphate for bloom a...

Cucumbers & Vines High-potassium feeding programs for cucumbers, zucchini, melons, and every vining crop that sets fruit fast and keeps producing. Vine crops are heavy feeders with a distinctive preference: they're chloride-sensitive, which is why this collection leans on Potassium Sulfate and Sulfate of Potash Magnesia rather than muriate sources. Cucumber Fertilizer 8-16-36 anchors the program with chelated micronutrients for soil, foliar, and hydroponic use, while Calcium Nitrate and Epsom Salt keep cal...

Citrus & Fruit Trees Complete nutrition for citrus, avocado, stone fruit, and orchard trees — from the balanced seasonal feeding that drives fruit production to the micronutrient corrections trees signal through their leaves. Citrus & Avocado Fertilizer 14-6-4 anchors the program with the nitrogen-forward ratio these evergreen producers want, while the chelated micronutrient line handles what trees are famous for running short on: iron for the pale, yellowing new growth of chlorosis, zinc for small-leaf roset...

Palms & Tropicals Purpose-built nutrition for palms, bananas, birds of paradise, and tropical ornamentals — indoors and out. Palms have the most distinctive nutrient profile in the landscape: they are famously hungry for magnesium and manganese, and the yellowing older fronds and frizzled new growth that plague palms are almost always those two deficiencies, not disease. Our Palm Tree Fertilizer delivers the complete program, supported by Epsom Salt and Sulfate of Potash Magnesia for magnesium, Manganese Sulfa...

Azaleas & Acid-Lovers Specialized nutrition for azaleas, camellias, rhododendrons, hydrangeas, gardenias, and blueberries — the acid-loving plants that struggle in ordinary soil no matter how much fertilizer they're given. These plants need their soil chemistry managed first: below pH 6, their roots can actually take up iron and the nutrients around them. Azalea & Camellia 15-5-15 delivers the complete feeding program in one formula, while Elemental Sulfur, Cottonseed Meal, and Ferrous Sulfate bring pH dow...

Houseplants & Indoor Clean, precise nutrition for houseplants, indoor citrus, and container gardens — sized and formulated for pots, not fields. Container plants live in a closed system: nutrients deplete, salts accumulate, and deficiencies show fast in a monstera or ficus that can't reach fresh soil. All-Purpose Houseplant Food 21-7-14 delivers the classic 3-1-2 foliage ratio at measured indoor strength, while Chelated Iron corrects the pale, yellowing leaves common in indoor citrus and acid-loving houseplan...