Park in Dłużek, established at a turn of XVIII and XIX century, was inscribed into monuments register in 1977. Unfortunately it is not under a proper care, elements of a spatial composition are being fading away and it is more and more transforming into wood-park. In such a situation, not only trees, but herb plants as well are decorative elements. A definite majority of trees in the park are representatives of a national flora. Thirty three species of threes and bushes were found in total, including only 3 species of gymnosperm. Park in Dłużek should be included into moderately rich ones from the point of view of dendroflora. It is an old premise, so as many as 20 trees (from 4 species) could be covered with a protection as nature monuments. Relief of the ground where the park had been established is diversified. Herb plants have a huge influence on the appearance, not only in woodland part, but on clearings, in streams and ponds as well. A hundred species belonged to 34 families were fund, including some very decorative ones, like snowdrop Galanthus nivalis, wood anemone Anemone nemorosa, wood violet Viola reichenbachiana, Water Forget- -me-not Myosotis palustris, Narrow Leaf Cattail Typha angustifolia, common reed Phragmites australis. There are 4 species under a legal protection in the park, that definitely increases a natural value. The lack of funds for a restoration to an old splendour is a problem of numerous old premises. However, nothing stands on the way to design composition elements increasing decorative values.