This page contains specific information about black pine (Pinus nigra), subsp. nigra '6057', which can be found in the Hortus Botanicus in Leiden. The girth of the tree, measured at a height of , is 2.83 m 1.30 m (May 15, 2013, Wim Brinkerink). Its height is exactly 22.80 m (Apr 29, 2014, laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder), Wim Brinkerink). This tree was planted around the year 1900 ± 50, which makes it around 115 ± 50 years old (Wim Brinkerink, Dec 22, 2011).
The tree is a specimen of the subspecies Pinus nigra subsp. nigra.