Made in California
Made in California
Made in California
Made in California
Made in California
Made in California
Made in California
Made in California
Made in California
Made in California
What does your garden — or your body — need today?
Yellowing or Non-Producing Citrus & Avocado
Most often a sign of nitrogen, iron, or zinc deficiency. Our 14-6-4 blend with chelated micronutrients fixes the cause, not the symptom.
Hydroponic Garden Setup
From beginner systems to advanced grows — water-soluble nutrients with everything your plants need to thrive without soil.
Bigger, More Vibrant Roses & Flowers
A balanced 4-7-5 formula that fuels lush blooms, deeper colors, and stronger stems all season long.
Trouble Falling Asleep
USP-grade magnesium chloride supports relaxation and natural sleep. Mix into water — pure, pharmaceutical-quality, no fillers.
Sore Muscles & Recovery
Concentrated topical magnesium oil for fast, targeted muscle relief. Spray, rub in, and feel the difference within minutes.
Stress & Tension Relief
USP-grade Epsom salt for relaxing baths, foot soaks, and full-body recovery. The classic mineral remedy, made in California.
Shop by Crop
Custom-blended formulas for the crops you actually grow.
Tomatoes & Fruiting Vegetables
Bigger fruit, deeper flavor, more abundant harvests. Works for tomatoes, eggplant, melons, and squash.
Lettuce & Leafy Greens
Tender, fast-growing leaves with rich color and density. Ideal for lettuce, kale, spinach, and chard.
Peppers & Herbs
Stronger flavor and bigger yields for peppers, basil, cilantro, mint, and culinary herbs.
Strawberries & Berry Crops
Sweeter, juicier berries with bigger harvests. Built for strawberries, blueberries, and bramble fruits.
Cucumbers & Vine Crops
Crisp, productive vines with steady harvests. Ideal for cucumbers, zucchini, and squash.
Azaleas, Camellias & Acid-Loving Shrubs
Vibrant blooms and lush foliage for plants that thrive in acidic soil. Built for azaleas, camellias, rhododendrons, hydrangeas, and blueberries.
Why Greenway Biotech
Greenway Biotech, Inc. is a family-owned fertilizer and USP magnesium manufacturer in Madera, California, operating since 1989. Every product is made in our own FDA-registered facility — we are the manufacturer, not a reseller.
Our fertilizers are CDFA-registered, custom-blended NPK formulas with chelated micronutrients. Every batch is third-party tested for heavy metals, with results available on request. Our magnesium products are USP pharmaceutical grade with no fillers.
We've shipped to gardeners, hydroponic growers, and commercial farms in all 50 states, and we manufacture private label and contract blends for other brands. Thousands of verified customer reviews, three decades running.
Not Sure Where to Start?
Take our 2-minute quiz — we'll match you to the right fertilizer for your crop, soil, and goals.
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- Sale Price
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For Your Body, Not Just Your Garden!
USP-grade magnesium and personal care, made in the same FDA-registered California facility.
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The Organic Gardener's Guide to Soil Preparation
Organic fertilizers feed soil biology, not plants directly — so timing, soil pH, and a current soil test matter more than any single product. This guide breaks down the three families and how to combine them for healthier soil. -
How Do Soil Microbes Affect Plant Health?
Your soil is alive — a single teaspoon holds up to a billion bacteria working to feed your plants. Learn how the soil food web drives nutrient uptake, which organic amendments support it, and what you can do to keep it thriving.
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Flower Fertilizer 101: How to Choose, Apply, and Troubleshoot for Vibrant Blooms
Flower Fertilizer 101: How to Choose, Apply, and Troubleshoot for Vibrant Blooms Eve...
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The Healing Garden: A Nurturing Guide to Mental Wellness Through Plant Care
Clinical research shows gardening and plant care significantly reduce depression, anxiety, and stress. Learn which plants offer the most therapeutic value and how to build a healing garden — from a single houseplant to a full backyard retreat.
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The Ultimate Guide to Deep Hydration: Ingredients for Silky Smooth Skin (2024)
The Ultimate Guide to Deep Hydration: Ingredients for Silky Smooth Skin (2024) Whil...
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Exploring Lavender Essential Oil: Health Benefits, Uses, and Extraction Methods
Learn more about lavender essential oil, its uses and benefits for your health, here.
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What is the best organic way to get rid of moss in your lawn?
Ferrous sulfate effectively controls moss in lawns while improving grass health. This guide covers:
- Moss characteristics and affected grass types
- Specific mosses and weeds targeted
- Preparing and applying ferrous sulfate solution
- Application frequency and post-treatment care
- Fertilization with ammonium sulfate or urea for lawn recovery
The article provides step-by-step instructions for mixing and applying ferrous sulfate, including timing, method, and frequency. It also offers tips for maintaining a healthy lawn to prevent moss regrowth.
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DIY Rosemary and MSM Powder Spray to Boost Hair Growth
Learn how to make a rosemary and MSM powder spray for hair growth.
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Sweet Dreams in a Glass: The Sleepy Girl Mocktail Recipe
Make the popular tart cherry juice mocktail.
