{"product_id":"hormex-rooting-hormone-powder-for-cuttings-16-1-60-iba-max-strength-for-hardwood-semi-hardwood","title":"Hormex rooting hormone powder for cuttings #16 — 1.60% IBA max-strength for hardwood \u0026 semi-hardwood","description":"\u003cstrong\u003eHormex Rooting Hormone #16 is a max-strength powder containing 1.60% IBA formulated to encourage reliable root formation on hardwood and difficult-to-root cuttings.\u003c\/strong\u003e\n\n\u003cp\u003eWhen you need dependable rooting where softer formulations fail, this concentrated powder provides a professional‑grade boost of Indole‑3‑Butyric Acid (IBA) to kickstart root development. Hormex has produced propagation aids for decades; this #16 powder is the highest listed IBA strength in the line, designed for semi‑hardwood and hardwood cuttings, mature ornamental stems, fruiting wood, and other slow‑to‑root species. It works with soil, peat, coco, rockwool, and hydroponic systems and is compatible with Hormex rooting cubes and common propagation workflows.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will cuttings form roots with Hormex Rooting Hormone #16?\u003c\/h3\u003e\n\u003cp\u003eRooting time depends on species, environment, and cutting condition, but the higher IBA concentration helps shorten the lag phase for tough cuttings. Expect consistent initiation of root primordia sooner than with lower‑strength powders when heat and humidity are managed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpeeds root initiation on hardwood and semi‑hardwood stems.\u003c\/li\u003e\n  \u003cli\u003eWorks in soil, rockwool, coco, and peat‑based mixes.\u003c\/li\u003e\n  \u003cli\u003eBest results when combined with warm bottom heat and high humidity.\u003c\/li\u003e\n  \u003cli\u003ePair with Hormex Rooting Cubes for faster stabilization.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s the correct way to use this max‑strength rooting powder?\u003c\/h3\u003e\n\u003cp\u003eFollow standard propagation technique: take a healthy 3–8 inch cutting at a 45° angle below a node, optionally pre‑dip in clean water or a Hormex liquid, then tap the basal end into the powder so a thin, even coating adheres. Plant into your chosen medium and maintain gentle warmth and humidity until roots establish.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCut stems 3–8\" at 45° below a node for best uptake.\u003c\/li\u003e\n  \u003cli\u003eLightly coat the basal end; avoid overpacking with powder.\u003c\/li\u003e\n  \u003cli\u003eUse consistent moisture, bottom heat (if possible), and high humidity domes.\u003c\/li\u003e\n  \u003cli\u003eMonitor for rot—ensure good drainage and air circulation after rooting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich plant types benefit most from this 1.60% IBA powder?\u003c\/h3\u003e\n\u003cp\u003eThis strength is formulated for species that are slow or stubborn to root: mature hardwoods, deciduous and evergreen ornamentals, some fruit trees, and medicinal or rare cultivars where clonal success matters. For very soft, recently flushed cuttings, choose a lower IBA concentration in the Hormex range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHardwood cuttings from trees and shrubs.\u003c\/li\u003e\n  \u003cli\u003eOrnamental varieties and rare or valuable cultivars.\u003c\/li\u003e\n  \u003cli\u003eFruiting wood that resists rooting with weaker formulas.\u003c\/li\u003e\n  \u003cli\u003eProfessional cloning setups and hobbyists propagating precious stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use it with hydroponic systems and rooting media?\u003c\/h3\u003e\n\u003cp\u003eYes — the powder adheres to cutting bases and performs well whether you plant into rockwool, coco, peat moss, or traditional potting mixes. It’s compatible with both soil‑based and hydroponic propagation, serving as a versatile stimulant for many setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEffective in rockwool cubes for hydroponic clones.\u003c\/li\u003e\n  \u003cli\u003eSuitable for coco, peat, and porous potting mixes.\u003c\/li\u003e\n  \u003cli\u003ePairs well with humidity domes and heated benches.\u003c\/li\u003e\n  \u003cli\u003eNot a fertilizer—use alongside proper nutrient schedules once roots form.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Hormex Rooting Hormone #16 is ideal for experienced gardeners, nurseries, and propagators who work with hardwood or otherwise difficult cuttings and need a concentrated IBA powder to improve success rates. If you regularly clone shrubs, trees, rare ornamentals, or fruiting wood and are comfortable managing propagation environment controls (heat, humidity, sterile technique), this max‑strength formula gives you a reliable, industry‑proven option to increase rooting consistency.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eIBA\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: Is Hormex #16 suitable for softwood cuttings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—#16 (1.60% IBA) is best for semi‑hardwood and hardwood; use lower IBA strengths for softwood cuttings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much powder should I use per cutting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Tap a thin, even coat on the basal end—avoid clumping. A light dusting is usually sufficient for effective rooting.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Hormex","offers":[{"title":"Default Title","offer_id":54593677853011,"sku":"B01LZO27DQ","price":44.52,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1095\/4257\/2371\/files\/hormex-rooting-hormone-front-packaging.jpg?v=1786775599","url":"https:\/\/findsworth.co.uk\/products\/hormex-rooting-hormone-powder-for-cuttings-16-1-60-iba-max-strength-for-hardwood-semi-hardwood","provider":"Findsworth","version":"1.0","type":"link"}