Plans include hanging gardens set 30ft above ground
The Olympic Park will be a "stunning green oasis" to be proud of after the 2012 Games, Olympics minister Tessa Jowell has said.
The Olympic Delivery Authority (ODA) announced details of work taking place to transform around 250 acres of former industrial land in east London.
It will become one of the UK's largest new urban parks.
More than 4,000 trees will fill the park and temporary wildflower meadows are to be planted.
New plans developed with the Olympic Park Legacy Company also include hanging gardens set 30ft above ground on the huge footbridge from Stratford City, with meadows, lawns, shrubs and rows of trees welcoming people over the main walking entrance into the park.
A tree-lined road into the north of the park is modelled on The Mall and Birdcage Walk in central London.
There will also be a new regional sports club set in parkland, with a garden square centred on the original Eton Manor Boys Club war memorial and it will be lined with sweet gum trees which turn red around Remembrance Day.
More than 300,000 wetlands plants and hundreds of thousands of flowers and bulbs in varied parklands are also to be included in wooded hills, meadows, ponds, lawns, gardens and wet woodlands.
Ms Jowell said: "The Olympics will create a stunning green oasis in east London that in legacy will join the long list of world famous parks London is so lucky to have.
"Nowhere else will features like the great British garden, wetlands and new wildlife habitats sit side by side with world class sports facilities. This will be a destination that the whole nation can be proud of."
ODA chief executive David Higgins said the clean-up would produce a "great park" for people and wildlife after 2012.