Seeds from Bevendean Down have been gathered and stored in the Kew's Millennium Seed Bank to preserve them for future generations.
The project aims to collect seeds from the country's best downland sites to create new wildflower sites in the city centre.
The seeds were collected with a special 'brush harvester' machine which brushes the top of the meadow to knock the seeds out and catch them.
Volunteers have also been hand harvesting seed that can not be collected mechanically, from a variety of sites.
Brighton and Hove City Council Leader Jason Kitcat said: "We are delighted that Kew has recognised how good the site is and have targeted it to use for seed collection for the Millennium Seed Bank. It's a fitting tribute to the hard work and team effort."
Dawes is due to appear before Lewes Crown Court on Wednesday 9 May for a committal hearing.
Carlo Dawes, 34, of Taunton Road, Bevendean who has been charged with the murder of Graham Pethard, 37, from Liverpool, was remanded back into custody following his appearance at Brighton Magistrates' Court this morning.
The family of Graham Pethard have paid tribute to him.
The family of Graham Pethard, who died as a result of a stab wound on Saturday 5 May in Brighton have paid tribute to him. They say: "Graham was a loving father who idolised his children. He was also a father figure to his friends and all who ever knew him."
A 34-year-old man has been arrested on suspicion of murder following the fatal stabbing of a 37-year-old Liverpool man in a flat in Taunton Road in Bevendean in Brighton early on Saturday morning. A post mortem has revealed he died from extensive blood loss caused by a knife wound.