Acta Scientiarum Polonorum
Silvarum Colendarum Ratio et Industria Lignaria

Introduction. The Lipka Forest District is located in north – western Poland. In 2019 the data on its natural monuments were updated. There are 21 natural monuments in the Central Register of Forms of Nature Protection in the study area, including 20 single trees and one group.
Material and methods. The circumferences and heights of monument trees were measured, their health
condition and geographical location (GPS) were determined.
Results. A total of 23 nature monuments were inventoried: 22 single trees and one hornbeam alley. The circumferences of the measured trees range from 29 to 715 cm and their height from 2 to 35 m. The health condition of nature monuments in the studied area is mostly average.
Conculusions. The largest number of protected trees is found in the historic manor park in Mały Buczek. There are fewer natural monuments compared to previous years. The most impressive protected tree is the English oak with a circumference of over 700 cm.