Episode 48 of The Trigan Empire
The Food of the Gods
aka The Deadly Seeds
De verloren planeet (Dutch title)
The Lost Planet (Dutch title, translated)
The Food of the Gods was originally published in 7 installments in issues 661 (14 September 1974) to 667 (26 October 1974) of Look and Learn magazine.
To date it has not been reprinted in English.
Plot summary (Dutch)