The centrepiece of the campaign, devised by Media Planning Group, is a large outdoor poster, situated on London's Talgarth Road, which will dispense bio-degradable apple blossom at 15-minute intervals between seven in the morning and seven in the evening.
The idea represents the passing of spring to summer and follows on from Magners blossom-themed TV campaign in April, during which London's Waterloo Tube station was transformed into a virtual apple orchard.
Magners has so far been marketing the drink in London and Scotland by encouraging drinkers with the tagline, "Time dedicated to you".
Stephen Kent, brands director at Magners, said: "This initiative successfully encapsulates the idea of sharing the natural environment and seasonal changes of the Magners orchard with our consumers, so they can enjoy it as we do."
MPG handled all media buying and planning for the campaign. Its other clients include Camelot, P&O Ferries, Conservative Party, Gucci and Peroni.
C&C is Ireland's largest drinks and snack company, owning brands such as Tayto, Club Orange and Ballygowan mineral water.
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