Description
Biogreen Garlic is a concentrated garlic extract supplement formulated for foliar and root application as a natural pest deterrent and plant health stimulant. Garlic’s bioactive compounds — particularly allicin and related sulfur-containing organosulphides — are well established in agricultural science as natural repellents against a wide range of insect pests and as stimulants of plant immune response pathways that improve resistance to both insect attack and fungal disease. Biogreen Garlic delivers these benefits in a stable, ready-to-dilute liquid format that integrates naturally into organic and conventional growing programmes.
The Allicin Mechanism Against Pests and Disease
Allicin — the compound produced when garlic cells are damaged — is one of the most well-studied natural bioactive compounds in horticulture. Its broad-spectrum biological activity derives from its ability to react with the sulfhydryl groups of enzymes in pest insects and fungal organisms, disrupting critical biochemical processes. Applied to plant surfaces as a foliar spray, allicin and related garlic compounds create a surface environment that insects find aversive — reducing feeding and egg-laying on treated plants and encouraging pest populations to disperse to untreated areas. The sulfur compounds also interact with the plant’s own immune signalling systems — the jasmonate and salicylate pathways — stimulating systemic acquired resistance that improves the plant’s own defensive chemistry against both pest and pathogen challenge. Regular use of garlic extract creates a plant population that is both actively deterring pests through surface chemistry and more inherently resistant through upregulated immune function. At The Horticulture Company we recommend Biogreen Garlic as part of integrated pest management programmes, particularly for growers who want to reduce reliance on synthetic pesticides and build more naturally resilient crops.
Application Instructions
Dilute Biogreen Garlic at the recommended rate per litre of water. Apply as a foliar spray covering all leaf surfaces thoroughly, paying particular attention to the underside of leaves. Apply in the morning or evening with lights off. Can also be used as a root drench at a lower concentration. Repeat applications weekly as a preventative measure or every three to five days as a deterrent during active pest pressure.
Browse the full range: Explore our complete New Products range at The Horticulture Company. Also in this range: IONIC CALMAG PRO, UGRO XL BASIC 70LITRE, EXHALE CO2 BAG, PLANT !T YOYO (PACK OF 8).








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