Siiger was educated at the royal art academy in 1943 and was a pupil of Axel Jörgensen and Kresten Iversen. Siiger was born on the Danish island of Bornholm and was greatly inspired by the fellow Bornholm native Oluf Høst. Siiger was a primarily a landscape painter and is known for his strong expressive colours. Siiger painted and travelled all around Scandinavia and lived and worked in Norway from 1951-60.
Exhibition Highlights:
Caravallen: 1948-52
Unge kunstneres samfund, Oslo, Norway :1956
The free art exhibition: 1965, 1967 and 1969
The artists fall exhibition: 1947-62
Holbaek museum: 1975
Charlottenborg: 1955, 1960-68 and 1983
Galley Marius :1982
Gallery Passepartout: 1977, 1983 and 1984
Gallery Ti : 1985
Øbro Art Gallery 