Szkoła Główna Gospodarstwa Wiejskiego Leśny Zakład Doświadczalny SGGW w Rogowie

Botanical collection

Dendrological collection

Experimental Forestry Plots

Alpinarium

Herbaceous plant collection

Tropical plant collection

 

Dereń kousa odm. chińska

Kielichowiec chiński

Magnolia szerokolistna

Dendroflora of China

China, the world's third most floristically abundant country, after Brazil and Columbia, and has around 30,000 species of vascular plants, belonging to 353 families and 3,184 genera. This encompasses 12% of the world's plant resources. At the same time, it is the only country this rich in plant life where a large part of its lands lie within a temperate climate zone.
China's territory encompasses boreal, temperate, as well as sub-tropical and tropical forest zones. They permeate one another, coming up against no great obstacles in the form of mountain chains or seas, a phenomenon which is not evident anywhere else in in the world. Meanwhile, the topographical and climatic diversity of the country's individual regions allows the existence of an extraordinary variety of habitats, where species found occur nowhere else. It is estimated that 56% of plant genera occurring in China are endemic; in other words, they occur nowhere apart from China. A great many of these, known in Europe and America as long-extinct, grow in China to this very day.
On the other hand, China is a country with an uncommonly high population density. A significant part of the natural plant community was transformed into agricultural land, as a result of which, a multitude of valuable and rare plant species were irretrievably lost. Many more will come under threat within the space of the next few years. Estimates suggest that around 3,000 endemic species are in danger of extinction. At the same time, the most fascinating areas, in botanical terms, are located in the country's less accessible and poorest regions. Numerous species have only recently been discovered and it is certain that many more are still awaiting discovery. It is for this reason that the study and examination of China's plant life is so crucial and urgent a task.
The Arboretum's collection of Chinese trees and shrubs began to develop in the 1980's, when China opened up somewhat more to the world and a wider exchange of plant material became possible with the country's botanical gardens. Currently, the Arboretum's collection holds around 500 taxa of trees and shrubs native to China with the ability to winter in Poland. Some newly discovered or rare species, about which little is known, were introduced into Poland for the first time by the Arboretum.
Some, such as Sinocalycanthus chinensis, Euonymus macropterus, Heptacodium miconioides and Symplocos paniculata, have turned out to be highly ornamental. Financial constraints mean that obtaining new species, primarily from natural sites, takes place almost exclusively through seed exchange with other botanical gardens. These plants are currently the object of intense scrutiny as regards their adaptation to the Polish climate, their health, and population variability.

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