Sections of the Schloss Park could qualify as Linz' first botanical garden. The park contains an impressive variety of trees (sycamore, copper beech, slit-leaved copper beech, and Canadian hemlock). In February of 1994, the State Government's Office of Upper Austria even placed four of the sycamore trees under natural protection. In 1975, the Linz Municipal Council recognized a beautiful sequoia tree in the park area a natural monument.

Once the trees are approximately 30 years in age, the copper beeches begin to flower and produce so-called beechnuts.These small nuts can be used for sowing purposes. One of the most interesting features about the "1990 Tree of the Year" is its reddish-colored leaves as it has a missing enzyme; only young trees have this particular enzyme. During the course of a year, the red color fades and as autumn approaches and foliage from all of the other deciduous trees begin turning turn more yellow-red, this tree's foliage becomes more green in color.

The Fagus sylvatica purpurea is not only one of the most popular deciduous trees on campus because of the way it looks, but also because it makes an important contribution to conserving nature as many species of native garden birds choose to nest among the tree's dense branches and foliage. In addition, many wild animals feed on the beechnuts. Beech trees are not only for enjoyment purposes, industries process beechwood due to its elasticity. Beech is very popular in the furniture industry. Other products include beech wood flour as well as beech wood chips used when smoking fish and meats.