Contractors celebrated planting 20,000 new trees in Merseyside with the balloon launch. The £688,000 planting job, at Mab Lane Community Woodland, helped turn two former brownfield sites in west Derby into natural landscapes as part of the Mersey Forest.
UPM Tilhill project manager Paul Manley said: "Planting the trees was a huge undertaking. As well as transforming a brownfield site, it brings joy to local people."
Mab Lane Community Woodland is part of a 23ha brownfield site. The trees overlook wild flower meadows, a community orchard and seasonal wetland areas.
Funding came from Northwest Regional Development Agency, Forestry Commission, Liverpool City Council, Big Lottery Fund and the English Woodland Grant Scheme.
The wood is part of Newlands, a £59m scheme launched seven years ago to reclaim large areas of derelict, underused and neglected land in the north-west of England.