Arboretum Kostelec nad Černými lesy, University arboretum near Kostelec nad Černými lesy, Czech Republic

The Arboretum Kostelec nad Černými lesy covers 12.38 hectares on a south-facing slope at 300–340 m above sea level, about 3 km north of Kostelec nad Černými lesy near the Truba settlement. It holds 8,186 woody plants across 1,707 taxa, including rare conifers such as Abies holophylla, Cedrus deodara and Metasequoia glyptostroboides. A pond lies below the southern edge in the valley of an unnamed stream.

The arboretum was founded in 1954 by Pravdomil Svoboda, then head of the Department of Dendrology and Geobotany at the Forestry Faculty of the Czech University of Life Sciences. It was managed by doc. Pokorný from 1963 to 1986 and by Jiří Holata from 1986 to 1996; Petr Šenfeld has led it since 2015. In 2005 it joined the Union of Botanical Gardens of the Czech Republic.

The arboretum belongs to the Faculty of Forestry and Wood Sciences of the Czech University of Life Sciences in Prague and serves its practical teaching and research on introduced woody plants. It is open to the public twice a year, in spring and autumn, during open-door days.

The grounds are open to visitors on certain days in spring and fall and can be explored on foot. It is helpful to check opening dates beforehand and wear comfortable walking shoes.

Among the plants are rare species from distant regions that would not normally grow in this climate. These rarities are arranged along the walking routes and display the diversity of global plant life.