During this time he started writing diaries, poems, and compositions, the last under the influence of his teacher Johann Samuel Petri.
During Napoleon's failed campaign in Russia in 1812, Schefer was appointed manager of the big estates of his newly-won friend, Prince Hermann von Pückler-Muskau, doing well under hard circumstances until 1816.
These, owing to their warmth of feeling, keen psychology, and descriptions of the beauties of nature, at once established his fame as a poet.
[3] But, due to his pantheistic beliefs, his poetry and novels were barred from the curricula of the Prussian elementary and secondary schools, which resulted in his being forgotten after 1910.
On the occasion of Schefer's 222nd birthday on July 30, 2006, a whole day was devoted to several of Bad Muskau's events as part of the Lusatian Music Summer, above all to his compositional oeuvre.