BioGolf® Vinter is used preventively in areas where heavy frost and/ or substantial precipitation in the form of rain or snow can be expected in autumn and winter. BioGolf® Vinter is used in autumn for final fertilising of greens and tees. The composition provides the grass with the absolutely optimal combination of both macro- and micronutrients, ensuring that it will be in the best possible overwintering condition. BioGolf® Vinter’s symbiotic effect can also be expected to significantly reduce the frequency of fungal attacks because the grasses’ ability to ward off and resist fungal attacks is greatly increased.