{"product_id":"hygrozyme-hyshield","title":"Hygrozyme HyShield – Liquid Chitosan for Plants","description":"\u003ch2\u003eChitosan that switches on a plant's own defences\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHyShield\u003c\/strong\u003e from \u003cstrong\u003eHygrozyme\u003c\/strong\u003e is a liquid \u003cstrong\u003eplant biostimulant\u003c\/strong\u003e made with \u003cstrong\u003ehigh-molecular-weight chitosan\u003c\/strong\u003e, a natural compound extracted from recycled crab shells. Plant cell walls carry receptors that recognise chitosan, so each dose prompts the plant's natural defence responses as though it were under attack, without any damage being done. The maker reports \u003cstrong\u003ethicker, stronger stalks\u003c\/strong\u003e, \u003cstrong\u003ereduced transpiration\u003c\/strong\u003e and better resilience to \u003cstrong\u003eheat, cold and drought stress\u003c\/strong\u003e, with a protective layer on roots and leaves that builds with every application. It is used as a \u003cstrong\u003efoliar spray through vegetative growth\u003c\/strong\u003e and a \u003cstrong\u003eroot drench in flower\u003c\/strong\u003e, in any growing medium, alongside your normal feed.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural chitosan\u003c\/strong\u003e - high molecular weight for slow, long-lasting action; clear and odourless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStress resilience\u003c\/strong\u003e - lower transpiration helps plants ride out high heat, cold nights and dry spells\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThicker stalks\u003c\/strong\u003e - stronger stems to carry a heavier canopy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlower development\u003c\/strong\u003e - the maker reports better flower development and higher essential oil production\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvery medium, every stage\u003c\/strong\u003e - soil, coco, rockwool and hydro, from seed or cutting to flowering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlays well with others\u003c\/strong\u003e - compatible with water-soluble nutrients, beneficial microbes and hydrogen peroxide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHeat stress, wilting and weak stems\u003c\/h3\u003e\n\u003cp\u003eHot lights, a warm room, cold nights or a missed watering can push plants to lose water faster than the roots replace it, and the result is wilting, stalled growth and stems that struggle to hold the canopy. HyShield's chitosan lowers \u003cstrong\u003etranspiration\u003c\/strong\u003e and primes the plant's own defences, so it copes better with \u003cstrong\u003eenvironmental stress\u003c\/strong\u003e and builds sturdier stems for \u003cstrong\u003eflowering\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeedlings and cuttings:\u003c\/strong\u003e \u003cstrong\u003e1ml per litre\u003c\/strong\u003e as a drench, or soak the propagation plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetative, week 1:\u003c\/strong\u003e \u003cstrong\u003e1ml per litre\u003c\/strong\u003e as a foliar spray, once a week, lights off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetative, week 2 onwards:\u003c\/strong\u003e \u003cstrong\u003e5ml per litre\u003c\/strong\u003e as a foliar spray, once a week, lights off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlowering:\u003c\/strong\u003e \u003cstrong\u003e5ml per litre\u003c\/strong\u003e as a root drench, once a week; spray the stalks rather than the flowers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixing:\u003c\/strong\u003e do a small jar test with your nutrients first - if they congeal, apply HyShield on plain-water days. Add Hygrozyme before HyShield; aim for about \u003cstrong\u003epH 5.8\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e keep cool and dry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive ingredient:\u003c\/strong\u003e high-molecular-weight chitosan, from recycled crustacean shells\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e plant biostimulant for foliar spray and root drench\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRates:\u003c\/strong\u003e 1ml\/L for seedlings, cuttings and the first week of veg; 5ml\/L from week 2 of veg and through flowering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e once a week\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal pH:\u003c\/strong\u003e about 5.8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e soil, coco, rockwool and hydroponics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with:\u003c\/strong\u003e water-soluble nutrients, beneficial microbes, hydrogen peroxide and Hygrozyme\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAppearance:\u003c\/strong\u003e clear, odourless liquid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade by:\u003c\/strong\u003e Hygrozyme (SIPCO Innovations), Canada\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hcs-dosing\" style=\"margin:32px 0 0;border:1px solid #e6e6e6;border-radius:12px;overflow:hidden;font-family:Montserrat,-apple-system,'Segoe UI',sans-serif;\"\u003e\n\u003cdiv style=\"background:#101010;padding:16px 20px;border-bottom:3px solid #efc04c;\"\u003e\n\u003cdiv style=\"color:#ffffff;font-size:17px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;\"\u003eFeed Chart\u003c\/div\u003e\n\u003cdiv style=\"margin-top:6px;color:#b8b8b8;font-size:12px;line-height:1.5;\"\u003eHyShield · all media · foliar spray in vegetative growth, root drench in flowering, once a week\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;color:#2b2b2b;background:#fff;\"\u003e\n\u003ctr style=\"background:#f4f4f4;\"\u003e\n\u003cth style=\"text-align:left;padding:10px 20px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#6b6b6b;font-weight:600;\"\u003eStage\u003c\/th\u003e\n\u003cth style=\"text-align:right;padding:10px 14px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#6b6b6b;font-weight:600;white-space:nowrap;\"\u003ePer 1 L\u003c\/th\u003e\n\u003cth style=\"text-align:right;padding:10px 20px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#6b6b6b;font-weight:600;white-space:nowrap;\"\u003ePer 10 L\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;\"\u003eSeedlings and cuttings (drench or plug soak)\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;font-weight:600;\"\u003e1 ml\u003c\/td\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;color:#6b6b6b;\"\u003e10 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fcfaf4;\"\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;\"\u003eVegetative, week 1 (foliar spray)\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;font-weight:600;\"\u003e1 ml\u003c\/td\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;color:#6b6b6b;\"\u003e10 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;\"\u003eVegetative, week 2 onwards (foliar spray)\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;font-weight:600;\"\u003e5 ml\u003c\/td\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;color:#6b6b6b;\"\u003e50 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fcfaf4;\"\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;\"\u003eFlowering (root drench)\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;font-weight:600;\"\u003e5 ml\u003c\/td\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;color:#6b6b6b;\"\u003e50 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#101010;padding:12px 20px;font-size:12px;color:#b8b8b8;line-height:1.6;\"\u003e\n\u003cspan style=\"color:#efc04c;font-weight:600;\"\u003eNote\u003c\/span\u003e — Hygrozyme's own technical sheet: once a week, foliar sprays with the lights off. Jar-test with your nutrients first, add Hygrozyme before HyShield, and aim for about pH 5.8. Set EC first, then adjust pH, once every base nutrient and additive is in the tank.\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eIs HyShield a fertiliser?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. It carries no nutrients to replace your feed; keep to your normal nutrient programme and add HyShield on top as the schedule shows.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWill it mix with my nutrients?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eIt is compatible with water-soluble nutrients, but the maker recommends a jar test first. If the mix congeals, apply HyShield on its own as a foliar spray or on plain-water days.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan I use it with beneficial microbes or hydrogen peroxide?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eYes. Hygrozyme state HyShield is compatible with beneficial microbes and with hydrogen peroxide, and it can be drenched together with Hygrozyme.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan I spray it on the flowers?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eOnce plants are flowering the maker recommends spraying the stalks and applying the rest as a root drench, rather than spraying the flowers themselves.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWorks Well With\u003c\/h3\u003e\n\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/hygrozyme\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/hygrozyme.jpg?v=1787262373\u0026amp;width=160\" alt=\"Hygrozyme Root Zone Enzyme Cleaner\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eHygrozyme Root Zone Enzyme Cleaner\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eAdd before HyShield in the same tank\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/spray-bottles\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/spray-bottles-2l-pump-sprayer.jpg?v=1787263332\u0026amp;width=160\" alt=\"Spray Bottles\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eSpray Bottles\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eFor the weekly foliar spray\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/aqualine-pump-pressure-sprayer\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/aqualine-pump-pressure-sprayer-1.jpg?v=1790163754\u0026amp;width=160\" alt=\"Aqualine Pump \u0026amp; Pressure Sprayer\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eAqualine Pump \u0026amp; Pressure Sprayer\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eCovers a full room of plants\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"Hygrozyme","offers":[{"title":"1L","offer_id":53931121770762,"sku":"NUT-HYGR-005-01","price":24.95,"currency_code":"GBP","in_stock":true},{"title":"4L","offer_id":53931121803530,"sku":"NUT-HYGR-005-02","price":64.95,"currency_code":"GBP","in_stock":true},{"title":"10L","offer_id":53931121836298,"sku":"NUT-HYGR-005-03","price":133.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/hygrozyme-hyshield-1l-1.jpg?v=1792296194","url":"https:\/\/hydrocropshop.co.uk\/products\/hygrozyme-hyshield","provider":"Hydro Crop Shop","version":"1.0","type":"link"}