{"title":"Root Rot \u0026 Soil Biology","description":"\u003ch2\u003eRoot rot is a symptom, not an organism\u003c\/h2\u003e\u003cp\u003eMushy brown or black roots, a sour smell, leaves yellowing and dropping while the soil is still wet. Several different pathogens produce that picture, and they all take hold the same way: a root zone that stays saturated, low in oxygen and empty of competition.\u003c\/p\u003e\u003cp\u003eThe waterlogging is the cause. Fix that first — nothing here substitutes for drainage.\u003c\/p\u003e\u003ch2\u003eWhat lives there instead\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eTrichoderma harzianum\u003c\/strong\u003e strain T-22 is a beneficial fungus that colonises the root surface as roots grow. It occupies the space and consumes the resources pathogenic fungi would otherwise use, and it grows alongside the root system rather than sitting where you put it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRoot Biome Builder\u003c\/strong\u003e introduces beneficial soil bacteria that work the same territory from a different angle, building a more competitive root-zone community.\u003c\/p\u003e\u003cp\u003eNeither of these is a fungicide, and we won't call them one. They don't cure a rotted root — that tissue is gone. What they do is make the root zone a less easy place for the next pathogen to establish, which is why they belong in your potting mix, not in your emergency kit.\u003c\/p\u003e\u003ch2\u003eWhen to use them\u003c\/h2\u003e\u003cp\u003eAt potting and repotting, when new roots are about to grow and there's bare territory to claim. After a rot event once you've cut back the damage and corrected the drainage. And routinely in propagation, where cuttings sit in wet media with no root system to defend themselves.\u003c\/p\u003e\u003cp\u003eCompatible with \u003ca href=\"\/collections\/beneficial-nematodes\"\u003ebeneficial nematodes\u003c\/a\u003e and soil-dwelling predatory mites — they occupy different niches and don't interfere with each other.\u003c\/p\u003e","products":[{"product_id":"trichoderma-harzianum-t22-root-rot-prevention","title":"Trichoderma Harzianum","description":"\u003cp\u003e\u003ci\u003eTrichoderma harzianum\u003c\/i\u003e Rifai strain T-22 is not just a soil additive; it is a high-performance biological fungicide and root enhancer. While predatory mites guard your leaves, T-22 guards your root zone. This specific strain was hybridized to thrive across the widest possible range of soil types and temperatures, creating a living \"shield\" around plant roots that blocks pathogens and unlocks trapped nutrients.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" class=\"mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eField Notes — \u003cem\u003eTrichoderma\u003c\/em\u003e T-22\u003c\/h3\u003e\n\u003cdiv dir=\"ltr\" class=\"overflow-x-auto w-full px-2 mb-6 print:overflow-x-visible\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\" class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\"\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eOrganism\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\n\u003cem\u003eTrichoderma afroharzianum\u003c\/em\u003e strain T-22 (formerly classified as \u003cem\u003eT. harzianum\u003c\/em\u003e, strain KRL-AG2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eBeneficial soil fungus — root colonizer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eSold by\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eWeight \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eFormulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eWettable powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eShips as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eViable spores\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eApplied as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSoil drench, or incorporated dry into mix at potting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eWhere it lives\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eRoot surface — colonizes and grows outward with the root system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eMode of action\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eOccupies root space ahead of pathogens, competes for nutrients and exudates, parasitizes pathogenic fungi directly, and triggers the plant's own defense response\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eWorks against\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\n\u003cem\u003ePythium\u003c\/em\u003e, \u003cem\u003eRhizoctonia\u003c\/em\u003e, \u003cem\u003eFusarium\u003c\/em\u003e, \u003cem\u003eThielaviopsis\u003c\/em\u003e, \u003cem\u003eCylindrocladium\u003c\/em\u003e — root and crown rot organisms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eDoesn't work against\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eFoliar disease (powdery mildew, leaf spot), bacterial rot, insects, fungus gnats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eTiming\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePreventive. Establishes at potting, propagation, or deflasking — before a pathogen has the root surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eSoil temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eActive 50–90°F; colonizes fastest 60–85°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eMoisture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eMoist soil required for establishment; will not colonize dry media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003ePersistence\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eColonizes for the life of the root system if undisturbed; reapply after repotting or heavy media change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eMix water\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eDechlorinated. Chlorine and chloramine reduce spore viability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eMixed slurry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eApply the same day. Spores don't hold in solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eRefrigerate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eYes — refrigeration extends viable shelf life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eCompatible with\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eMycorrhizae, beneficial nematodes, predatory mites, beneficial insects, springtails, most insecticides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eKeep separate from\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSystemic and broad-spectrum fungicides — chemical fungicides will kill it. Check the interval on the fungicide label before applying\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eSafe around\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003ePets, children, plants at any stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u003cstrong\u003eHandling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eAvoid inhaling dust when measuring dry product — mask advisable, standard for any powdered fungal product\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"FGMN Nursery","offers":[{"title":"5 Gallons (5 grams of T-22)","offer_id":48772410802418,"sku":"T22-5G","price":12.0,"currency_code":"USD","in_stock":true},{"title":"10 Gallons (10 grams of T-22)","offer_id":48772410835186,"sku":"T22-10G","price":20.0,"currency_code":"USD","in_stock":true},{"title":"25 Gallons (25 grams of T-22)","offer_id":48772410867954,"sku":"T22-25G","price":35.0,"currency_code":"USD","in_stock":true},{"title":"50 Gallons (50 grams of T-22)","offer_id":48772410900722,"sku":"T22-50G","price":55.0,"currency_code":"USD","in_stock":true},{"title":"100 Gallons (100 grams of T-22)","offer_id":48772410966258,"sku":"T22-100G","price":75.0,"currency_code":"USD","in_stock":true},{"title":"250 Gallons (250 grams of T-22)","offer_id":48772411064562,"sku":"T22-250G","price":102.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/8275\/3778\/files\/T22productimagefgmn.png?v=1786023753"},{"product_id":"root-biome-builder-beneficial-soil-bacteria","title":"Root Biome Builder","description":"\u003cp data-path-to-node=\"3\"\u003eRoot Biome Builder is a professional-grade liquid biological inoculant designed to fortify the foundation of your plant collection. Specifically engineered for container-grown plants and high-value collector aroids, this formula introduces a concentrated dose of both \u003ci data-index-in-node=\"292\" data-path-to-node=\"3\"\u003eBacillus subtilis\u003c\/i\u003e and \u003ci data-index-in-node=\"314\" data-path-to-node=\"3\"\u003eBacillus amyloliquefaciens\u003c\/i\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"4\"\u003eBy establishing a robust microbial colony in the rhizosphere, it bridges the gap between sterile potting mixes and the complex ecosystems found in nature. Whether you are acclimating a rare import or maintaining a prized \u003ci data-index-in-node=\"221\" data-path-to-node=\"4\"\u003eMonstera\u003c\/i\u003e, this soil drench application supports the biological diversity necessary for superior root resilience and nutrient availability.\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,0,0\"\u003eFormulation:\u003c\/b\u003e Highly concentrated liquid beneficial soil bacteria.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,1,0\"\u003eActive Ingredients:\u003c\/b\u003e Contains \u003ci data-index-in-node=\"29\" data-path-to-node=\"5,1,0\"\u003eBacillus subtilis\u003c\/i\u003e and \u003ci data-index-in-node=\"51\" data-path-to-node=\"5,1,0\"\u003eBacillus amyloliquefaciens\u003c\/i\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,3,0\"\u003eApplication:\u003c\/b\u003e Simple soil drench designed for container-grown plants.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,4,0\"\u003eKey Benefit:\u003c\/b\u003e Directly supports and diversifies root zone biology.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FGMN Nursery","offers":[{"title":"8 ounces","offer_id":48799636193522,"sku":"ROOT-8OZ","price":80.0,"currency_code":"USD","in_stock":true},{"title":"12 ounces","offer_id":48799636226290,"sku":"ROOT-12OZ","price":110.0,"currency_code":"USD","in_stock":true},{"title":"16 ounces","offer_id":48799636259058,"sku":"ROOT-16OZ","price":140.0,"currency_code":"USD","in_stock":true},{"title":"32 ounces","offer_id":48799662538994,"sku":"ROOT-32OZ","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/8275\/3778\/files\/RootBiomeBacillussubtilisBacillusamyloliquefaciensBeneficialBacteria.png?v=1772262161"}],"url":"https:\/\/fgmnnursery.com\/collections\/root-rot.oembed","provider":"FGMN Nursery","version":"1.0","type":"link"}