It is the largest subdivision of the Botanical Garden supervising the old Kairėnai Park, the Forest Park and the Arboretum. This establishment is based on geographical - ecological principle. According to the project, it will include the floral zones of Europe, the Mediterranean, the Caucasus, Siberia, North America, the Far East, China, Japan and Central Asia.
The Department of Dendrology carries out research in introduced woody plants (hardiness, bio-ecological characteristics of introduced woody plants, growing technology etc.)
In 2002 woody plants of about 2,500 taxa (229 genera, 79 families) were growing in Dendrology Department: about 1,200 taxa of wild plants (species and infraspecific taxa) and about 1,300 taxa of cultivars. The largest collections of woody plants in Dendrology Department include: Ericaceae Juss. – 458 taxa (including Rhododendron L. – 261 taxa), Rosaceae Juss. – 420 (including Rosa L. – 117), Cupressaceae Rich. et Bartl. – 363 (including Juniperus L. – 118), Oleaceae Hoffmgg et Link. – 200 (including Syringa L. – 140), Caprifoliaceae Juss. – 116, Pinaceae Lindl. – 95, Fabaceae Lindl. –80.
4 specialists work in this department:
Viktorija Guseva collects plants of Europe, primarily woody dwarf plants. She is responsible for introduction of plants with decorative blooms and leaves from Dasiphora, Philadelphus, Weigela, Spiraea, Euonymus genera.
Gintarelė Jurkevičienė - her area of interest is introduction of ligneous lianas from Clematis, Actinidia, Lonicera, Vitis, Ampelopsis and other genera, and other species from North America.
Vitalija Pribušauskaitė is an expert of Ericaceae family. She collects species, varieties and forms of Erica, Calluna, Rhododendron and others, and also introduces plants from Far East, China and Japan.
Irena Žiemytė is curator of lilacs (Syringa).
Raimonda Šimėnaitė collect plants of genera: Dasiphora, Buxus, Berberis, Spiraea, Forsythia, Weigela and crabapples.