He was born at Ludwigsburg in Württemberg. After attending the classical schools of Ludwigsburg and Maulbronn, he was apprenticed in a cloth factory, but, in 1804, owing to the good services of Professor Karl Philipp Conz, was able to enter the University of Tübingen. He studied medicine but also had time for literary pursuits in the company of Ludwig Uhland, Gustav Schwab and others. He took his doctor's degree in 1808, spent some time travelling, and then settled as a practising physician in Wildbad.
Here he completed his Reiseschatten von dem Schattenspieler Luchs (1811), in which his own experiences are described with caustic humour. He next collaborated with Uhland and Schwab in the Poetischer Almanach for 1812, which was followed by the Deutscher Dichterwald (1813), and in these some of Kerner's best poems were published. In 1815 he obtained the official appointment of district medical officer (Oberamtsarzt) in Gaildorf, and in 1818 was transferred to Weinsberg, where he spent the rest of his life
His house, the site of which at the foot of the historical Schloss Weibertreu was presented to him by the townspeople, became a mecca for literary pilgrims, all of whom were made welcome. Gustav IV Adolf of Sweden came with a knapsack on his back. The poets, Christian Friedrich Alexander von Württemberg and Nikolaus Lenau were constant guests, and in 1826 Friederike Hauffe (1801–1829), the daughter of a forester in Prevorst, a somnambulist and clairvoyante, arrived; she forms the subject of Kerner's famous work Die Seherin von Prevorst, Eröffnungen über das innere Leben des Menschen und über das Hineinragen einer Geisterwelt in die unsere (The Seeress of Prevorst, revelations of the human inner life and about the penetrations of the spirit world into ours, 1829; 6th ed., 1892). In 1826 he published a collection of Gedichte which were later supplemented by Der letzte Blütenstrauß (1852) and Winterblüten (1859). Among others of his well-known poems are the charming ballad Der reichste Fürst; a drinking song, Wohlauf, noch getrunken, and the pensive Wanderer in der Sägemühle.
In addition to his literary productions, Kerner wrote some popular medical books, dealing with animal magnetism, a treatise on the influence of sebacic acid on animal organisms, Das Fettgift oder die Fettsäure und ihre Wirkung auf den tierischen Organismus (1822); a description of Wildbad and its healing waters, Das Wildbad im Königreich Württemberg (1813); while he gave a pretty and vivid account of his youthful years in Bilderbuch aus meiner Knabenzeit (1859); and in Die Bestürmung der württembergischen Stadt Weinsberg im Jahre 1525 (1820), showed considerable skill in historical narrative.
In 1851 he was compelled, owing to increasing blindness, to retire from his medical practice, but he lived, carefully tended by his daughters, at Weinsberg until his death. He was buried beside his wife, who had died in 1854, in the graveyard of Weinsberg, and the grave is marked by a stone slab with an inscription he himself had chosen: Friederike Kerner und ihr Justinus.
Association with George Rapp and the Harmony Society 
In Bilderbuch aus meiner Knabenzeit, Kerner recalls George Rapp's visits to his father, the Oberamtmann at Maulbronn. Kerner's father had helped shield Rapp from religious prosecution by the authorities in Germany, and Kerner well remembered Rapp and his long black beard. George Rapp and his followers eventually left Germany in 1803, settled in the United States, and started the Harmony Society. Die Seherin von Prevorst and its tale about Kerner's relationship with Friederike Hauffe — the latter reputed to have visionary and healing powers, and who had produced a strange 'inner' language containing Hebrew-like elements — made quite an impression among the members of the Harmony Society in 1829, who saw it as confirmation of the approaching millennium and of their religious views.
- Kerner was one of the most inspired poets of the Swabian school. His poems, which largely deal with natural phenomena, are characterized by a deep melancholy and a leaning towards the supernatural, which, however, is balanced by a quaint humour, reminiscent of the Volkslied. — 1911 Encyclopædia Britannica
- The poems and dramatic scenes of his Reiseschatten are characterized by a dreamy fancy and a peculiar fantastic humor. — New International Encyclopedia
- He was at times morbid, fanciful, dreamy, sensitive and poetic and endowed with a strange, fantastic humor . . . — 1920 Encyclopedia Americana
Cultural references 
- The poet Thomas Medwin stayed with him during 1848 to 1849 and later wrote a poem in his honour, To Justinus Kerner: With a Painted Wreath of Bay-Leaves, published in London in 1854.
- The grape variety Kerner, bred in 1929, was named in his honour.
- Søren Kierkegaard wrote in his journal on Kerner:
- “I cannot help being amazed that Justinus Kerner (in his Dichtungen) is able to interpret so conciliatingly the phenomenon which has always shocked me since my very first experience of it — that someone says just exactly what I say. To me the phenomenon seemed to be the most confusing, almost Punch-and-Judy, disorder: the one would begin a sentence which the other would finish, and no one could be sure who was speaking.” July 11, 1837
- “Justinus Kerner has interested me so much just now because, although he is far more gifted, I see in him the same artistic barrenness I see in myself. But I also see how something can be done even though essential continuity is lacking and can be fulfilled only by continuity of mood, of which every single little idea is a blossom, a kind of novelistic aphorism, a plastic study. While his own Dichtungen are full of excellent imaginative ideas, his reports aus dem Nachtgebiete der Natur are so dry that we could almost take that to be indirect proof of their truth.” July 13, 1837
Further reading 
- Mitteilungen des Justinus-Kerner-Vereins und Frauen-Vereins Weinsberg. Weinsberg : Justinus-Kerner-Verein
- Suevica: Beiträge zur schwäbischen Literatur- und Geistesgeschichte / ed. Reinhard Breymayer. Stuttgart: Heinz (Stuttgarter Arbeiten zur Germanistik). – ISSN 0179-2482
- Justinus Kerner, Bilderbuch aus meiner Knabenzeit (Brunswick, 1849; new ed. Frankfort, 1897)
- To Justinus Kerner: With a Painted Wreath of Bay-Leaves Thomas Medwin, The New Monthly Magazine CII (November 1854) p 196
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Kerner, Justinus Andreas Christian". Encyclopædia Britannica (11th ed.). Cambridge University Press. This work in turn cites:
- Strauss, “Justinus Kerner,” in Kleine Schriften (Berlin, 1866)
- A. Reinhard, Justinus Kerner und das Kernerhaus zu Weinsberg (Tübingen, 1862; 2nd ed. 1886)
- G. Rümelin, Reden und Aufsätze, vol. iii. (1894)
- M. Niethammer (Kerner's daughter), Justinus Kerners Jugendliebe und mein Vaterhaus (1877; Stuttgart, 1887)
- A. Watts, Life and Work of Kerner (London, 1884)
- T. Kerner, Das Kernerhaus und seine Gäste (1894)
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- "Kerner, Justinus". New International Encyclopedia. 1905.
- "Kerner, Justinius". Encyclopedia Americana. 1920.
- Kleksographien (1890 edition)
- inner language of Friederike Hauffe
- The Seeress of Prevost, Justinus Andreas Christian Kerner, trans. Catherine Crowe, 1855, (Partridge & Brittan, NY)
- Goldy trans. from Justinus Kerner's collection, pages 332-7 of Fairy tales from all nations, ed. Anthony Rubens Montalba, 1850, (Harper & Brothers, NY)