Natura, Sztuka, Piękno
Centrum Edukacji Ekologicznej - warsztaty ekologiczne na terenie MOB
Nr 2
Our tree collection is quite rich and contains 260 taxa of trees and shrubs from all over the world including our native species (European and North African species such as: poplars, maples, oaks, willows, yews and lindens) as well as Asian and North American ones.

The collection of Asian species is particularly rich. There are some trees, which have been grown in parks and gardens for so long, we consider as native, e.g.: berberis (Berberis), dogwoods (Cornus), cotoneaster (Cotoneaster), weigelas (Weigela). Some others, however, seem to us to be quite exotic, e.g.: sweet chestnut (Castanea sativa), Amur cork tree (Phellodendron amurense) or Cunninghamia lanceolata. We have two specimens of maidenhair tree (Ginkgo biloba). This is the only living species of gymnosperms with true leaves, which is a remaining of a group of plants living millions of years ago. It resembles its ancestors which lived 100 million years ago and is considered by botanists as a living fossil. It is a holy tree in Japan and China, and it has been used in medicine for centuries (as an aphrodisiac obtained from not fully rape fruit). Currently in France and the USA there are tens of millions of these trees as they are grown for medical use of the leaf extract. The fruit resembles a yellow plum. In China it is intentionally planted as a fruit tree. However, the fruit is not eaten but only the stone, which is a Chinese delicacy.

Another interesting gymnosperm plant, which can hardly be called a tree now, is cunninghamia (so called 'China-fir'). It is uncommon in Poland as it is susceptible to low temperatures. It grows slowly and has a unique feature: dead ends of its branches are dropped and new buds grow in their place. It has been grown in botanical gardens and arboreta since the 60's.

American plants have numerous representatives in our garden, e.g.: false indigo-bush (Amorpha frutiaesa), Carolina sweet shrub (Calycanthus floridus), catalpa (Catalpa bignonioides), tulip tree (Liliodendron tulipifera), honey locust (Gleditsia triacanthos), bald cypress (Taxodium distichum), Canadian hemlock (Tsuga canadensis) and more.
The bald cypress is a coniferous tree which drops its needles in a similar way to larch. It prefers periodically flooded lowlands with a high level of groundwater or even wetlands. The bald cypress adapted to such conditions and is able to develop a distinctive structure called a cypress knee, which used to be thought to help in oxygenation but laboratory test did not support this. Our specimens have not developed such structures as they occur in trees growing in the vicinity of water, which reach a certain age. It lives long, grows slowly and in the spring changes its colours into ginger-brown.