Sagadi Manor Park and Dendropark with large ancient trees is an inseparable part of the manor. Sagadi Park has the thickest European white elm and 33 m oaks, which are some of the tallest in Estonia. 
In 1985, a 5.1-hectare dendropark was built on the western side of the manor complex. Alien tree and shrub species have been planted in families, all species have been marked with labels, and there are information stands for those interested. A total of 120 species have been planted in the dendropark.