Black poplar grows 100 m southwest of the castle, by the road Kaunas–Jurbarkas (141), near the parking lot. Trunk diameter at 1.3 m height is 1.84 m, trunk circumference: 5.78 m, height: 32 m. The tree is about 200 years old. At a height of 3 m, the trunk branches into three almost perpendicular trunks.