Johann Gerd Krüssmann
Johann Gerd Krüssmann was a German dendrologist and author.
Krüssmann worked as dendrologist from 1935, and from 1946 was the owner of a nursery and part-time horticulture teacher at the Horticultural Vocational School in Wesel and the county vocational school in Dinslaken. The Ellerhoop-Thiensen Arboretum was established in 1956 by Erich Frahm, its owner, in cooperation with Krüssman.