Show Safe Practice to Prune Prone Grapevines During Winter Grapevines may be pruned any time after the wood has ripened In the faland fall fal falland and before the sap lap starts flowing In Inthe Inthe inthe the spring It should not be done however when the canes are frozen because then they are brittle and break easily aRlly In the time handling In sections where grapes winter over without danger from freezing when left unprotected the pruning Is Iii done on mild days In February and early March Wounds made at this time have a chance to dry before the sap saIl rises rise It If the cuts are made late lale In spring or In early summer lummer the sap asp flows freely from the wounds causing excessive bleeding Whether hether bleedIng bleed lag Ing Is III Injurious or not Is U still disputed ed but It Is II a safe practice to prune early |