As a freelance writer he gained some recognition because of his modest, unobtrusive manner, among others by his Sämmtliche Werke; published from 1821 to 1822, the first volume with four historical dramas, the second with poetry, and the third with the Memorabilien aus meiner Reisetasche.
Thanks to the support of Archduke Johann, from this third volume onwards he wrote in particular descriptions of the surroundings of Vienna and the Austrian Alpine landscapes, Dalmatia and Montenegro with a mixture of topographical information and his own inventions.
However, his good friend Adolf Bäuerle, in whose Wiener Theaterzeitung he wrote some theatre reviews, noted that Weidmann never got out of the Österreichischen Erblanden, so that many of his travelogues would have originated only from fantasy, namely the announced descriptions of Egypt and Syria.
As a journalistic "girl Friday", his contemporary nickname, he published the Oesterreichischer Zuschauer in 1854 after the death of Josef Sigmund Ebersberg, even if only for a short time.
Weidmann was a member of the famous Viennese artist society "Die Ritter von der grünen Insel" (The Knights of the Green Island), to which the composer Franz von Suppé, the painter Eduard Swoboda and the Burgtheater actor Konrad Adolf Hallenstein belonged, under the direction of the playwright Otto Prechtler, along with many other artists.