Domestic gardens cover a significant proportion of the total area of Manchester, with around one fifth of Manchester's land area being gardens. The average proportion of domestic gardens to total ward area is 22-26%. This ranges between 0.5% (City Centre) to 47% across Manchester's wards.

The findings of the My Back Yard project demonstrate that gardens are not completely green infrastructure (green and blue space). This affects the total estimate of green and blue space cover across Manchester, which is now estimated at 49%. The previous estimate of GI across Manchester that assumed gardens were completely green and blue space was 58%.

Less green space in domestic gardens means that the potential benefits they provide to people (ecosystem services) are reduced.

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