[1] In parallel with his studies at the Danish Academy, he became a pupil of Christoffer Wilhelm Eckersberg and also of Cladius Detlev Fritzsch.

Taking 17th-century Dutch flower painting as a starting point, he revived the art in Denmark.

Jensen had an extensive circle of customers and many students, especially women, including Louise of Hesse-Kassel who later married King Christian IX.

[1] Jensen's flowers were typically arranged as a bouquet standing in a vase, usually on a tray.

A dark neutral background helped to emphasize the light colourful tones of the flowers.