Bergman wrote the screenplay of Wild Strawberries in Stockholm's Karolinska Hospital (the workplace of Isak Borg) in the late spring of 1957; he'd recently been given permission to proceed by producer Carl Anders Dymling on the basis of a short synopsis.
In Bergman on Bergman, he has stated that he only thought of Sjöström when the screenplay was complete, and that he asked Dymling to contact the famous actor and film director [REF].