Images of the final designs for the proposed Garden Bridge in central London have been revealed.
More than 270 trees and 2,000 shrubs and climbing plants will be included in the crossing which could stretch between the South Bank and Temple tube station, if it is built.
Campaigners have won the right to challenge Lambeth Council's approval of the construction.
The judicial review of the matter will be heard next month.
The £175m bridge will have five distinct landscape areas and use more than 22,000 perennials, ferns and grasses and 64,000 bulbs.
Landscape designer Dan Pearson said he has taken his inspiration from the use of plants and green spaces in the capital over the centuries.
It will change from wild marshlands on the South Bank, through to the ornamental gardens on the north side of the Thames, with woodland planting and a "cliff top landscape" on the centre.
Mr Pearson said: "The Garden Bridge will complement and continue this rich history of horticultural excellence in London.
"The planting will provide year-round colour and interest with spring blossom and flowering bulbs, high summer flowers, autumn colour and winter interest from evergreens, scented shrubs and bulbs."
Those opposed to the bridge have questioned its funding and its impact on views across the river of St Paul's Cathedral.
Plans were backed by Lambeth and Westminster councils last year.