The motifs on the cards:
Abies alba - Silver Fir
Aesculus hippocastanum - Horse-Chestnut
Betula pendula - Silver Birch
Corylus avellana - Common Hazel
Crataegus monogyna - Common Hawthorn
Fagus sylvatica - Beech
Pinus sylvestris - Scots Pine
Quercus robur - English Oak
The fine illustrations are designed by Susanne Weitemeyer, biological illustrator and artist. Susanne has among other things illustrated a large number of books such as Sea Animals and Plants as well as Trees and Shrubs published by Gyldendal.
The cards are printed at a Swan-labeled company and made from environmentally certified FSC paper.
The envelopes are made of eco-friendly eucalyptus paper.