An aqueous formulation that reduces the damage caused by spring frosts in plants having: (a) 0.001-2% by weight PVA micro/nanoparticles having a molecular weight of 10,000-100,000 g/mol and 1-20% acetate groups; (b) 0.0001-0.4% by weight stabilising agents; (c) 0.0005-0.05% by weight category IV adjuvants; (d) 0.00025-4% by weight emulsifier; (e) 0.003-6% by weight sodium hydroxide; and (f) 0.0065-13% by weight hydrochloric acid at 37% weight/weight and 1.18 g/mL density; a process for producing the aqueous formulation, and to uses.