He became known for his experimental lyric, mainly sound poems (Sprechgedichte) in the tradition of concrete and visual poetic forms.
Influenced by Dada he started to write experimental poetry, first published in the journal Neue Wege ("New Ways") in 1952.
His poems are characterized by German language word play, often at the level of single characters or phonemes.
Poems like "schtzngrmm" (his version of the word "Schützengraben" which describes the trenches of the World War I) can be understood only if read correctly.
Some other of his best-known poems are "lichtung" (also known as "lechts & rinks" [sic], in English "light & reft") and "kneiernzuck".