The rose, the queen of flowers, has long had a prominent place in the Garden Society. With the aid of the Reverend Göte Haglunds donation of his collection of roses, the park was able in 1987 to pride itself in becoming one of the leading rosaria of Northern Europe. Today the collection consists of some 1 200 different species and cultivars. The rosarium, which is in two main parts, presents modern roses sorted by group in the Rose Oval, while the old garden roses have been brought together in the Rose Park in delightful harmony with perennials such as salvia and catmint. Here you can also find the collection of rarities from the Swedish west coast. The collection of species grows near by the Rose Oval and climbers and ramblers are to be found spread throughout the Rosarium.
Along with the rest of the garden, the rosarium is organically maintained. The roses are only fed with organic fertilizers and no chemical pesticides are used. Small birds do an excellent job in keeping bugs down and are rewarded with inviting nesting boxes.