{"product_id":"oullyy-ferrous-sulfate-heptahydrate-20-iron-granules-6-lb-pack-for-greener-lawns-shrubs-trees-lowers-soil-ph","title":"OULLYY Ferrous Sulfate Heptahydrate 20% Iron Granules — 6 lb pack for greener lawns, shrubs \u0026 trees, lowers soil pH","description":"\u003cp\u003e\u003cstrong\u003eOULLYY Ferrous Sulfate Heptahydrate is a 20% iron granular plant food and soil conditioner designed to help lawns, shrubs, trees and garden beds develop deeper green color and improve nutrient availability.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis concentrated ferrous sulfate powder (heptahydrate) dissolves easily and is formulated for dry broadcast application or soil watering to supply bioavailable iron and modest sulfur while lowering alkaline soil pH. Supplied in a 6-pound package, it can be spread across lawns or worked into beds to address iron deficiency (chlorosis) and to make other nutrients more accessible in less acidic soils. Follow label directions for rates and timing to avoid foliage contact and to achieve even coverage.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will I see greener grass or leaf color?\u003c\/h3\u003e\n\u003cp\u003eVisible improvement can appear within days to a few weeks depending on plant type, season and soil conditions. Lawns often darken faster after a thorough watering because iron becomes available more readily in moist soils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLawns: apply 2 lbs per 1,000 sq ft for broadcast treatments.\u003c\/li\u003e\n  \u003cli\u003eBeds, shrubs, trees: use 1\/4–1\/2 lb per 100 sq ft and water in.\u003c\/li\u003e\n  \u003cli\u003eAvoid direct foliage contact and water immediately to activate the granules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this product change my soil pH and how should I apply it for acidifying?\u003c\/h3\u003e\n\u003cp\u003eYes — ferrous sulfate lowers soil pH when used at recommended rates, helping nutrient uptake in alkaline soils. Use conservative rates on sandy soils and higher rates on heavy clay; always water in after spreading to begin the reaction in the root zone.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAcidifying rate: 0.5–1 lb per 100 sq ft depending on soil texture.\u003c\/li\u003e\n  \u003cli\u003eLower rates for sandy soils, higher for heavy or compacted soils.\u003c\/li\u003e\n  \u003cli\u003eSpread evenly and water thoroughly to dissolve the granules into the soil.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat application methods and timing give the best results?\u003c\/h3\u003e\n\u003cp\u003eApply in the cool morning hours for best uptake and to reduce evaporation; avoid application during hottest parts of the day. You can broadcast granules over turf or distribute around beds and shrubs up to the dripline, then water to move the iron into the root zone.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadcast lawns: 2 lbs per 1,000 sq ft (approx. 1\/4 lb per 100 sq ft).\u003c\/li\u003e\n  \u003cli\u003eFlowers, shrubs, trees: 1\/4–1\/2 lb per 100 sq ft placed on soil, not foliage.\u003c\/li\u003e\n  \u003cli\u003eFor liquid root watering, dilute at roughly 1:500 and apply monthly as needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this product safe to use around my garden plants and how often should I reapply?\u003c\/h3\u003e\n\u003cp\u003eWhen applied as directed and washed into the soil, the granules are intended for use around lawns, ornamentals and vegetable beds. Reapply at label rates based on visual response; frequent light applications are better than heavy overuse.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not leave granules on leaves—sweep or rinse off and water in.\u003c\/li\u003e\n  \u003cli\u003eMonthly liquid root feeds (1:500 dilution) can maintain iron levels without over-acidifying.\u003c\/li\u003e\n  \u003cli\u003eMonitor plant color and soil pH to guide follow-up applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: OULLYY Ferrous Sulfate Heptahydrate is aimed at home gardeners, lawn-care enthusiasts and landscapers who want a straightforward iron supplement and soil conditioner to correct iron deficiency, improve turf color, and gently lower alkaline soil pH. It works well for lawns, garden beds, shrubs and trees when used according to directions and combined with routine watering and soil testing.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eFeSO4·7H2O\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much should I use on my lawn?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Broadcast 2 lbs per 1,000 sq ft (approx. 1\/4 lb per 100 sq ft), then water in thoroughly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use it on shrubs and vegetable beds?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—apply 1\/4–1\/2 lb per 100 sq ft around beds and under shrubs, avoid foliage contact and water in.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OULLYY","offers":[{"title":"Default Title","offer_id":56832138215764,"sku":"B0DJL1Q9LV","price":72.87,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/oullyy-ferrous-sulfate-front-packaging.jpg?v=1787023467","url":"https:\/\/gardenluxe.co.uk\/products\/oullyy-ferrous-sulfate-heptahydrate-20-iron-granules-6-lb-pack-for-greener-lawns-shrubs-trees-lowers-soil-ph","provider":"Gardenluxe Uk","version":"1.0","type":"link"}