Magners Irish Cider is Ireland's biggest single purchaser of Irish apples. The entire harvest from Magners' 200 acres of orchards, together with the total harvest of cull of apples in the Republic of Ireland plus a substantial portion of Northern Ireland's crop, is required for the Magners cider products. Seventeen varieties of apples are used in the production of Magners Irish Cider. They are Michelin, Dabinett, Yarlington Mill, Bulmer's Norman, Tremlett's Bitter, Breakwell Seedling, Taylor's, Harry Master's Jersey, Medaille d'Or, Reine des Pommes, Ashton Bitter, Bramley's, Grenadier, Brown Thorn, Brown Snout, Vilberies and Improved Dove. Most of these varieties are grown in the Magners' orchards in Clonmel.
Originally poles with hooks were used to shake the branches of the trees until the apple harvest carpeted the floor of the orchard. Today apples are harvested using a semi-automated process but hand-picking is still a major feature of the Magners apple harvest time. Traditionally cider apples were hand-harvested between September and December. Now different varieties of apple mature at different times of the season, thus allowing the orchard managers to pace the harvest and produce sufficient varieties to make up a traditional blend like Magners, throughout the year.