The Big Lottery Fund singled out the winner for its UK-wide Big Family Idea competition to encourage local communities to come together.
Whalley Range will receive £35,000 to make green improvements to the hard landscaping and to throw events to bring people together.
A Greening Your Alley guidebook is also being produced with information on funding, equipment, resources and growing guides to help other schemes.
Helen Bullough, Big Lottery Fund head of the north-west region, said: "The alleyways will be green areas to instil a spirit of community pride."
Christine Ricard, a representative from the Whalley Range Forum, said: "We look forward to getting together with our neighbours and other local gardeners."
The Big Family Idea was open to individuals, charities, companies, local authorities, sporting organisations and community centres.
A panel of judges selected 3 winning ideas that they felt would have a significant impact in improving family life across the UK.
Subscribe to Horticulture Week for more news, more in-depth features and more technical and market info.