Family-owned in California
Family-owned in California
Family-owned in California
Family-owned in California
Family-owned in California
Family-owned in California
Family-owned in California
Family-owned in California
Family-owned in California
Family-owned in California
What does your garden — or your body — need today?
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 company based in Madera, California, and has been in business in California since 1989. We blend our own formulas and pack every product in our own FDA-registered facility, so you buy straight from the source, 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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- from $ 31.99
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For Your Body, Not Just Your Garden!
USP-grade magnesium and personal care, packed and made in the same FDA-registered California facility.
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Best Fertilizer for Lawns: Nitrogen Rates, Timing, and Iron by Grass Type
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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
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What is the best organic way to get rid of moss in your lawn?
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- 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
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Sweet Dreams in a Glass: The Sleepy Girl Mocktail Recipe
Make the popular tart cherry juice mocktail.
