{"title":"Micronutrients \u0026 Chelated","description":"\u003cp\u003eMicronutrients are needed in the smallest amounts and missed the most dramatically — iron deficiency yellows new growth between the veins, zinc shortage stunts leaves into rosettes, and a whisper of missing boron can cost a strawberry bed its whole season. This collection carries every essential micronutrient in the right form for the job. Chelated versions (EDTA and DTPA) stay plant-available even in alkaline soil and mix safely into foliar sprays and hydroponic reservoirs — with DTPA iron holding up where soil pH runs highest. Sulfate forms deliver the same nutrients economically for soil application, Micro Green 2-0-3 combines the full package in one concentrate, and Azomite adds seventy naturally occurring trace minerals. Every product is CDFA registered, third-party tested for heavy metals, and manufactured in our FDA-registered Madera, California facility. When leaves tell you something is missing, this is where you find it.\u003c\/p\u003e","products":[{"product_id":"organic-ferrous-sulfate","title":"Organic Ferrous Sulfate (Iron Sulfate) | 20% Iron (Fe)","description":"\u003cp\u003eFerrous Sulfate 20% Iron is a high-purity ferrous sulfate heptahydrate (FeSO₄·7H₂O) supplying 20% soluble iron and 12% sulfur — a fast-acting, versatile single-ingredient amendment for correcting iron deficiency, supporting soil pH reduction, and managing lawn moss.\u003c\/p\u003e\n\u003cp\u003eIron deficiency (interveinal chlorosis — yellow tissue between green veins on new leaves) is usually a solubility problem rather than a supply problem: above roughly pH 7.0, soil iron converts to forms roots cannot absorb. Ferrous sulfate supplies iron already in the plant-available Fe²⁺ form, so foliar applications can produce visible green-up in new growth within days, and the oxidation chemistry that follows soil application gradually lowers root-zone pH — faster than elemental sulfur, which depends on slower microbial activity. It dissolves completely for foliar spray and soil application and also serves as an iron source for lawn moss management.\u003c\/p\u003e\n\u003cp\u003eFerrous sulfate works best in acidic to neutral soils; in persistently alkaline or free-lime calcareous soils a chelated iron source is more reliable, and it is not preferred for recirculating hydroponic systems, where Fe²⁺ precipitates out of solution. Important handling note: ferrous sulfate stains concrete, brick, stone, and fabric rust-brown on contact — sweep granules off hardscape immediately and rinse spray drift before it dries. Apply foliar sprays in cool conditions, wear gloves, and store sealed and dry, away from metal containers.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":1556793985,"sku":"701748874129","price":19.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1556794049,"sku":"701748874136","price":22.99,"currency_code":"USD","in_stock":true},{"title":"3 Pounds","offer_id":1556794113,"sku":"018227120289","price":26.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":1556794241,"sku":"701748874198","price":31.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":1556794305,"sku":"701748874204","price":49.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":1556794561,"sku":"018227120302","price":79.99,"currency_code":"USD","in_stock":true},{"title":"50 Pounds (or 2 x 25 pound bags)","offer_id":1556794625,"sku":"018227120296","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/files\/Ferrous_Sulfate_Fertilizer_-_Heptahydrate_-_20_Fe_-_1_Pound.png?v=1782246058"},{"product_id":"chelated-iron-edta","title":"Chelated Iron EDTA Fertilizer","description":"\u003cp\u003eChelated Iron EDTA 13% is a 100% water-soluble micronutrient fertilizer delivering 13.2% EDTA-chelated iron — one of the highest iron concentrations among chelated iron forms — formulated to prevent and correct iron deficiency (interveinal chlorosis) in gardens, raised beds, containers, and hydroponic systems.\u003c\/p\u003e\n\u003cp\u003eIron is essential for chlorophyll synthesis and photosynthesis, and deficiency shows first as yellowing between still-green veins on the newest leaves. Iron is often abundant in soil yet chemically unavailable: above roughly pH 6.5 it converts to insoluble forms roots cannot absorb. The EDTA chelate wraps each iron ion in a stable ring that shields it from reacting with soil calcium, phosphate, and carbonate, keeping iron plant-available through the pH 4.0–7.0 range — where unprotected iron sulfate can lock up within hours. It dissolves cleanly for foliar sprays, soil drenches, fertigation, and hydroponic reservoirs.\u003c\/p\u003e\n\u003cp\u003eEDTA is effective only in acidic to neutral conditions: confirm soil or solution pH before applying, and for soils above roughly pH 7.0–7.5 a DTPA or EDDHA chelate performs better. Apply foliar sprays in cool conditions, avoid drought-stressed plants, wear gloves and eye protection, and store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":1556850497,"sku":"726670283399","price":29.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1556850561,"sku":"726670283450","price":45.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":1556850753,"sku":"701748873641","price":95.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":7275787681827,"sku":"018227121484","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/files\/Chelated_Iron_EDTA_Fertilizer_1_Pound_380bbfce-b776-4ec4-9f71-ef33a2d56fc6.png?v=1781046663"},{"product_id":"organic-manganese-sulfate-fertilizer","title":"Organic Manganese Sulfate Fertilizer","description":"\u003cp\u003eManganese Sulfate Fertilizer is a high-purity manganese sulfate monohydrate (MnSO₄·H₂O) micronutrient supplying 31% elemental manganese and 18% sulfur — one of the most concentrated, fully water-soluble manganese sources available for preventing and correcting manganese deficiency.\u003c\/p\u003e\n\u003cp\u003eManganese is an essential micronutrient: it sits at the center of the water-splitting complex in photosynthesis and acts as a cofactor for more than 30 plant enzymes involved in nitrogen metabolism, carbohydrate transport, and chlorophyll function. Because manganese is immobile in the plant, deficiency shows first on the youngest leaves as interveinal chlorosis — and it is common in high-pH, calcareous, sandy, or over-limed soils where manganese availability drops sharply. This product is widely used on palms, citrus and fruit trees, vegetables, berries, field crops, turfgrass, and hydroponic systems, and dissolves cleanly for soil, fertigation, and foliar application.\u003c\/p\u003e\n\u003cp\u003eConfirm need with a soil or tissue test before applying — manganese sulfate works best in acidic to neutral soils, while above roughly pH 7.5 a chelated form performs better. Do not tank-mix with glyphosate; apply the two at least three days apart. Wear eye protection and minimize dust when handling, and store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits. The 50 lb size is repackaged from OMRI Listed® material; other sizes are CDFA registered but not repackaged from OMRI Listed® material.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":1557286273,"sku":"701748874563","price":19.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1557286337,"sku":"701748874426","price":24.99,"currency_code":"USD","in_stock":true},{"title":"3 Pounds","offer_id":1557286401,"sku":"701748873610","price":29.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":1557286529,"sku":"018227120494","price":49.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":1557286593,"sku":"701748874570","price":69.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":1557286785,"sku":"018227120500","price":109.99,"currency_code":"USD","in_stock":true},{"title":"50 Pounds (or 2 x 25 pound bags)","offer_id":1557286849,"sku":"018227120517","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/products\/Mangenese_Sulfate_Organic.JPG?v=1711585790"},{"product_id":"lettuce-fertilizer","title":"Lettuce Fertilizer 8-15-36 | Chelated Micronutrients | Hydroponics, Soil \u0026 Foliar Application","description":"\u003cp\u003eLettuce Fertilizer 8-15-36 is a premium, 100% water-soluble formula built specifically for lettuce, kale, spinach, chard, and all leafy green crops. The high 36% soluble potash, 15% available phosphate, and moderate 8% nitrogen are tuned to leaf quality, texture, and shelf life, with EDTA-chelated iron, manganese, zinc, and copper plus boron and molybdenum.\u003c\/p\u003e\n\u003cp\u003eLeafy greens are largely water, and potassium regulates water pressure within plant cells, supporting cell-wall strength for crisp texture and post-harvest quality. The moderate nitrogen supplies enough for healthy green leaves while avoiding the overly succulent growth, reduced shelf life, and excess nitrate accumulation that come from overfeeding. It dissolves cleanly for hydroponic systems, drip fertigation, soil and container growing, and supplemental foliar use, and can be scaled down for baby leaf and microgreen production.\u003c\/p\u003e\n\u003cp\u003eThis formula does not contain calcium by design — calcium and phosphate should not be combined in concentrated stock solution, so a separate calcium source should be applied independently. Pre-dissolve each fertilizer separately, keep solution EC moderate, follow label crop restrictions, and stop foliar feeding well before harvest. Store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":31482194985038,"sku":"619206360469","price":24.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1840836993,"sku":"018227121538","price":38.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":1840837057,"sku":"701748873689","price":59.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":1840837185,"sku":"018227121545","price":106.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":1840837249,"sku":"018227121552","price":214.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/files\/Lettuce_Fertilizer_8-15-36_1_Pound.png?v=1780779137"},{"product_id":"cucumber-fertilizer","title":"Cucumber Fertilizer 8-16-36 | Chelated Micronutrients | Hydroponics, Soil \u0026 Foliar Application","description":"\u003cp\u003eCucumber Fertilizer 8-16-36 is a premium, 100% water-soluble formula engineered for cucumbers, melons, squash, pumpkins, zucchini, and all cucurbit vine crops. The very high 36% soluble potash, enhanced 16% available phosphate, and controlled 8% nitrogen are tuned to the demand profile of fruiting cucurbits, with EDTA-chelated iron, manganese, zinc, and copper plus boron and molybdenum.\u003c\/p\u003e\n\u003cp\u003ePotassium supports water regulation inside fruit cells, sugar transport, cell-wall strength, and post-harvest shelf life, while the controlled nitrogen keeps energy moving into fruit rather than runaway vine growth. The enhanced phosphate supports the continuous flowering and root growth that cucurbits need across a long season. It dissolves cleanly for hydroponic reservoirs, drip fertigation, soil and container growing, and foliar use.\u003c\/p\u003e\n\u003cp\u003eThis formula does not contain calcium by design — calcium and phosphate should not be combined in concentrated stock solution, so a separate calcium source should be applied independently. Pre-dissolve each fertilizer separately, follow label crop restrictions, and for foliar use, spray in early morning or late afternoon below 85°F. Store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":31482092290126,"sku":"619206360445","price":24.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1841085313,"sku":"018227121569","price":38.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":40574866311,"sku":"018227121576","price":59.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":40574916871,"sku":"018227121583","price":106.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":40574960711,"sku":"018227121590","price":214.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/files\/Cucumber_Fertilizer_8-16-36_1_Pound.png?v=1780609384"},{"product_id":"strawberry-fertilizer","title":"Strawberry Fertilizer 8-12-32 | Chelated Micronutrients | Hydroponics, Soil \u0026 Foliar Application","description":"\u003cp\u003eStrawberry 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.\u003c\/p\u003e\n\u003cp\u003ePotassium supports sugar movement to developing fruit, cell water balance, firmness, and shelf life, while the moderate nitrogen avoids the soft berries and excess runners that come from overfeeding. Strawberries are also EC-sensitive, and the potassium-forward but moderate-nitrogen profile helps meet potassium demand without driving solution salinity too high. It dissolves cleanly for per-plant soil feeding, container growing, drip fertigation, hydroponic towers and NFT, and targeted foliar use.\u003c\/p\u003e\n\u003cp\u003eThis formula does not contain calcium by design — calcium and phosphate should not be combined in concentrated stock solution, so a separate calcium source should be applied independently. It is an oxidizing solid, so keep it away from heat, flame, and combustible materials. Pre-dissolve each fertilizer separately, follow label crop restrictions, and store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":31482207043662,"sku":"619206360476","price":24.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1841163905,"sku":"018227121491","price":38.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":40329529735,"sku":"018227121507","price":59.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":40329535495,"sku":"018227121514","price":106.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":40329547527,"sku":"018227121521","price":214.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/files\/Strawberry_Fertilizer_8-12-32_1_Pound.png?v=1780623070"},{"product_id":"cal-mag-plus-2-0-0-concentrate","title":"Cal-Mag Plus 2-0-0 Concentrate","description":"\u003cp\u003eCal-Mag Plus 2-0-0 is a 100% water-soluble calcium, magnesium, and iron supplement built for hydroponics, coco coir, and reverse-osmosis water — the three growing conditions where calcium and magnesium deficiency is most likely. It supplies 3.2% calcium, 1.2% magnesium, 0.1% EDTA-chelated iron, and 2% nitrogen from nitrate sources.\u003c\/p\u003e\n\u003cp\u003eCalcium supports cell-wall integrity, magnesium sits at the center of every chlorophyll molecule, and the EDTA-chelated iron stays plant-available across the working pH range of hydroponic systems. Because RO and distilled water carry no minerals, and because coco coir naturally binds calcium and magnesium, base fertilizers alone often leave these nutrients short. Cal-Mag Plus fills that gap and is the first component poured in Greenway's 4-part hydroponic feeding program.\u003c\/p\u003e\n\u003cp\u003eDissolve into a reusable stock concentrate, add it to the reservoir first — before any other nutrient — to help prevent precipitation, then set pH last. Never combine concentrated Cal-Mag directly with concentrated sulfate or phosphate fertilizers; use separate stock tanks and dilute each independently. Adjust the dose to your water hardness, and for coco coir, feed at every watering. Store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"2.5 Pounds (Makes 1 Gallon)","offer_id":1841274369,"sku":"0701748874266","price":33.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds (Makes 2 Gallons)","offer_id":1841274433,"sku":"0701748874273","price":55.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds (Makes 4 Gallons)","offer_id":1841274497,"sku":"018227121439","price":97.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds (Makes 10 Gallons)","offer_id":1841274561,"sku":"018227121446","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/products\/CalMag.JPG?v=1708406691"},{"product_id":"pepper-herb-fertilizer","title":"Pepper and Herb Fertilizer 11-11-40 | Chelated Micronutrients | Hydroponics, Soil \u0026 Foliar Application","description":"\u003cp\u003ePepper \u0026amp; Herb Fertilizer 11-11-40 is a premium, 100% water-soluble fertilizer formulated for the fruiting window in peppers and the harvest window in culinary herbs. The balanced 11% nitrogen and 11% available phosphate paired with very high 40% soluble potash supports fruit quality while sustaining the canopy through long fruiting cycles, with EDTA-chelated iron, manganese, zinc, and copper plus boron and molybdenum in every bag.\u003c\/p\u003e\n\u003cp\u003ePotassium supports fruit sizing, sugar and aromatic-compound transport, firmness, and post-harvest quality, while the sustained nitrogen keeps peppers productive through repeat harvests — peppers fruit over a longer window than tomatoes and benefit from more nitrogen than a tomato formula provides. It is well suited to sweet and hot peppers and to woody Mediterranean herbs such as rosemary, thyme, oregano, sage, and lavender, and dissolves cleanly for soil, container, drip fertigation, hydroponic, and foliar use.\u003c\/p\u003e\n\u003cp\u003eThis formula does not contain calcium by design — calcium and phosphate should not be combined in concentrated stock solution, so a separate calcium source should be applied independently. Pre-dissolve each fertilizer separately, check pH and EC, and for foliar use, spray in early morning or late afternoon. Store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":31482202718286,"sku":"619206360452","price":24.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1841393601,"sku":"018227121606","price":38.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":1841393665,"sku":"018227121613","price":59.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":1841393729,"sku":"018227121620","price":106.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":1841393793,"sku":"018227121637","price":214.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/files\/Pepper_Herb_Fertilizer_11-11-40.png?v=1780625780"},{"product_id":"tomato-fertilizer","title":"Tomato Fertilizer 4-18-38 | Chelated Micronutrients | Hydroponics, Soil \u0026 Foliar Application","description":"\u003cp\u003eTomato Fertilizer 4-18-38 is a premium, 100% water-soluble fertilizer formulated for the flowering-through-harvest window of fruiting nightshade crops. The low-nitrogen, high-phosphate, very-high-potassium ratio is tuned to fruit development rather than leafy growth, with EDTA-chelated iron, manganese, zinc, and copper plus boron and molybdenum in every bag.\u003c\/p\u003e\n\u003cp\u003ePotassium supports fruit sizing, sugar transport, firmness, and post-harvest quality, while available phosphate supports flowering and fruit set and the controlled 4% nitrogen keeps energy directed toward fruit. It is well suited to tomatoes, peppers, eggplants, tomatillos, and other fruiting nightshades, and dissolves cleanly for soil, container, drip fertigation, hydroponic, and foliar use.\u003c\/p\u003e\n\u003cp\u003eThis formula does not contain calcium by design — calcium and phosphate should not be combined in concentrated stock solution, so a separate calcium source should be applied independently for a complete program. Pre-dissolve each fertilizer separately, check pH and EC, and for foliar use, spray in early morning or late afternoon below 85°F. Store sealed and dry.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":31482214416462,"sku":"619206360483","price":24.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":1841458497,"sku":"701748873948","price":38.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":1841458561,"sku":"701748873931","price":59.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":1841458625,"sku":"018227120937","price":106.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":1841458689,"sku":"018227120944","price":214.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/files\/Tomato_Fertilizer_4-18-38_1_Pound.png?v=1780616124"},{"product_id":"zinc-sulfate","title":"Zinc Sulfate","description":"\u003cp\u003eZinc Sulfate 35.5% is a 100% water-soluble micronutrient fertilizer that corrects zinc deficiency in plants. Supplied as zinc sulfate monohydrate (ZnSO₄·H₂O), it delivers 35.5% actual zinc and 16.5% sulfur in a single application — among the highest zinc concentrations of any dry source, about 54% more zinc per pound than heptahydrate forms.\u003c\/p\u003e\n\u003cp\u003eZinc is an essential micronutrient and a cofactor for hundreds of plant enzymes involved in growth-hormone synthesis, protein formation, and carbohydrate metabolism. Deficiency shows as interveinal yellowing, small leaves, and shortened, rosetted growth, and is most common in high-demand crops such as pecans, citrus, corn, beans, and stone fruit. The sulfur supports amino acid and chlorophyll formation, covering two nutrient needs at once. It dissolves cleanly for foliar sprays, soil application, and fertigation.\u003c\/p\u003e\n\u003cp\u003eConfirm zinc deficiency with a soil test before applying, since zinc accumulates in soil and over-application can cause toxicity. Zinc sulfate is most effective in acidic to neutral soils; for foliar use, spray well-hydrated plants in early morning or late afternoon and test a small area first. Keep zinc out of stormdrains and waterways.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits.\u003c\/p\u003e","brand":"Greenway Biotech, Inc.","offers":[{"title":"1 Pound","offer_id":3508963393,"sku":"701748874433","price":19.99,"currency_code":"USD","in_stock":true},{"title":"2 Pounds","offer_id":3508963457,"sku":"018227120456","price":23.99,"currency_code":"USD","in_stock":true},{"title":"3 Pounds","offer_id":3508963521,"sku":"018227120463","price":27.99,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":3508963585,"sku":"701748873955","price":37.99,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":3508963649,"sku":"701748874082","price":49.99,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":3508963713,"sku":"018227120470","price":103.99,"currency_code":"USD","in_stock":true},{"title":"50 Pounds (or 2 x 25 pound bags)","offer_id":3508963777,"sku":"018227120487","price":201.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0850\/0900\/products\/Zinc_Sulfate_Monohydrate_Powder_35.5_Zinc.JPG?v=1711585954"},{"product_id":"copper-sulfate-crystals","title":"Copper Sulfate Crystals","description":"\u003cp\u003eCopper Sulfate Crystals 99% Pure is a high-purity copper sulfate pentahydrate (CuSO₄·5H₂O) in a fully water-soluble crystalline form. Lab tested at 99% purity with no fillers or binders, it delivers a predictable, consistent copper concentration per measured dose — important for applications where accurate dosing matters.\u003c\/p\u003e\n\u003cp\u003eIt is one of the most versatile compounds a grower or homeowner can keep on hand. Common uses include pool and pond algae management, preparing Bordeaux mixture for garden and orchard disease programs, correcting copper deficiency in sandy and high-organic soils confirmed by a soil test, and livestock hoof footbaths. Copper is also an essential plant micronutrient that supports enzyme systems, photosynthesis, and cell wall formation. The stable crystalline form keeps its potency indefinitely when stored cool and dry.\u003c\/p\u003e\n\u003cp\u003eCopper sulfate is potent and dosing depends on site conditions, so test water alkalinity or soil copper before applying, and follow rates appropriate to your use. Always dissolve crystals in a plastic, fiberglass, or wood container — never metal. 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Its guaranteed analysis is 11% iron held as a DTPA chelate, which keeps the iron plant-available up to roughly pH 7.5 — past the point where standard EDTA iron chelates begin to lose effectiveness.\u003c\/p\u003e\n\u003cp\u003eIron deficiency is usually caused by soil pH locking up iron rather than a true shortage, and it shows as interveinal yellowing on the youngest leaves first. DTPA's stronger hold makes this product a practical choice for neutral-to-alkaline soils, alkaline or bicarbonate-rich irrigation water, and situations where an EDTA-based iron has failed. It dissolves completely with no residue for soil drench, foliar spray, hydroponic, and aquaponic use.\u003c\/p\u003e\n\u003cp\u003eConfirm the deficiency and check pH before applying, since a chelate corrects iron availability but does not lower soil or water pH. Fe-DTPA breaks down under UV light, so keep reservoirs shaded. 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It supplies seven trace elements — iron, zinc, manganese, copper, boron, molybdenum, and calcium — in a single powder, replacing the need for multiple separate micronutrient supplements.\u003c\/p\u003e\n\u003cp\u003eIron, zinc, manganese, and copper are EDTA-chelated, which keeps these metals dissolved and available across the typical 5.5–6.5 reservoir pH range where unchelated forms tend to precipitate and become unavailable to roots. Boron and molybdenum are supplied in mineral form, which is naturally stable across that range. Micronutrient demand stays relatively constant through the growth cycle, so Micro Green is dosed at a steady rate from early growth through flowering, making it a straightforward addition to a recirculating reservoir, drip system, or coco feed.\u003c\/p\u003e\n\u003cp\u003eMix into a stock solution and store it in a dark container, since light can degrade the chelates over time. 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Boric acid dissolves directly into plant-available borate ions with no conversion step, and stays available across the common soil pH range without chelation. One product covers soil broadcast, foliar spray, fertigation, and hydroponic feeding.\u003c\/p\u003e\n\u003cp\u003eBoron has the narrowest sufficiency-to-toxicity window of any plant micronutrient, so precise dosing is essential — confirm deficiency with a soil or tissue test, start at the low end of recommended rates, and avoid broadcasting on boron-sensitive crops such as corn and beans. For fruiting crops, a pink-bud or pre-bloom foliar application supports fruit set.\u003c\/p\u003e\n\u003cp\u003eCDFA registered and third-party lab tested for heavy metals, with results consistently well below required limits. 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