This garden is administered by the city of Baden-Baden and has conducted international rose trials for over 20 years. The garden was started in 1979 and completed in 1981. A flower festival (Landesgartenschau) has been held here every year since then by the city of Baden-Baden.
The trial garden is divided into four squares, each with some 120 varieties planted with roses for competition over a period of four years. Hard paths and grass surround each square.
The 5000 plants in the garden include Shrub, Miniature, Floribunda and Hybrid Tea roses. Climbers and Ramblers cascade over rose arches and fences. There is also a collection of David Austin (English) roses and an area devoted to past trial winners.