Production on the series was shut down before all 13 planned episodes were filmed because director Paul Verhoeven went over budget. It was decided to split one episode, "De Byzantijnse beker" into two parts because there was enough footage, while two other stories remained unfinished. The thirteenth spot in the broadcast schedule was filled with the documentary Rond Floris (1969). Despite of this, Gerard Soeteman had already completed some scripts for a proposed second series, which ended up being adapted as a newspaper strip by Gerit Stapel, and some of them ended up being filmed for the German remake, Floris von Rosemund (1975).
In one episode, Rutger Hauer dislocated his shoulder jumping from a castle into a moat. During the filming of Flesh+Blood (1985), writer and director Paul Verhoeven was astounded by Hauer's refusal to do any stunts.
At the time, this was the most expensive Dutch television show ever made, with an estimated budget of one million two hundred thousand guilders, which is about five hundred forty thousand Euros, and extraordinary production values with sometimes more than two thousand extras.
The producers debated if they should shoot this series in black and white or color. Carel Enkelaar, head of NOS television, finally decided on black and white as this would be about 100.000 guilders cheaper.
This was the first Dutch television show to be shot on location. The episodes were shot out of sequence, depending on the availability of the guest stars. This is why some footage remains of the two abandoned episodes "De Stille Stroper" and "Het Gericht".