In Europe oaks (Quercus) with their thick cracked bark are a symbol of longevity and strength. Common (pedunculate) oaks (Q. robur) may live up to 800-1,000 years; in Lusławice, the oldest one is c. 250 years old. Two alleys formed out of common and northern red oaks (Q. rubra) can be found in the new part of the park, while in the English one Penderecki planted, among others, the Hungarian oak (Q. frainetto) with waxy, deeply indented leaves.
Near the rose garden there grows a Turkey oak, whose attractive barrel-shaped acorns have cups densely covered in bristles. These stenothermic species frequently grow together in the wild, in the mountains of Southern Europe.