[2] During the 1960s and 1970s Jensma published three collections of poetry, in addition he created graphics and reproductions of woodcuts.
Jensma spent most of his childhood in Middelburg, Eastern Cape, where his father worked at the Grootfontein College of Agriculture.
[5] Jensma's art is ethnic, based on a theme unique to himself, lino-printed images of animals drawn as characteristics of people.
[5] A selection of Jensma's poems appeared, with a brief biography, in the anthology Ten South African Poets edited and introduced by Adam Schwartzman (Manchester: Carcanet Press, 1999).
People who knew Jensma were contacted in all the major centres, the Salvation Army checked all its shelters and attempts were made to determine whether he had entered a mental home in Pretoria.