Kaiserstuhl Conservation Park supports approximately 400 plant species and was principally established to preserve the most northerly occurrence of the brown stringybark, Eucalyptus baxteri. Their multi-stemmed, mallee-like appearance is the result of earlier, regular trimming to provide wood for the Nuriootpa brick kilns.
Large blue gums, river red gums, native pines and sheoaks provide shady cover for the diverse understorey of yaccas, wattles, tea-trees and silver banksias. Many plants, such as lavender grevilleas and fringe myrtles flower in spring. The green flowered hairy correa is an unusual plant that grows in the shelter of the large granite outcrops. The rare prickly tree violet also occurs in the park and is often mistaken for the African boxthorn. This native plant provides protected nesting sites for small birds.
You may see mistletoe growing on the eucalypts, acacias and casuarinas in the park. These are parasitic native plants, which provide food and shelter for many bird species. The lichens growing on the rocks are also an important part of the ecosystem helping to weather the rocks to form soil.