This episode aired the same day as Armin Shimerman's first appearance on Buffy the Vampire Slayer (1997), where he would continue as a reoccurring character for the next two seasons. Shimerman has said that on at least three occasions he worked on both shows on the same day, getting into the makeup chair before dawn to shoot his scenes for DS9 in the morning, then getting out of makeup in the early afternoon and driving an hour across town to shoot scenes for Buffy late into the night.
The planting scenes were filmed at Ahmanson Ranch, near Ventura, California, but on the day of the shoot, there were gale force winds, and equipment trucks had to be used as wind blocks. It was so cold, that the crew were all wearing snow jackets, but the actors had to wear shirt-sleeves because it was supposed to be a beautiful day. Between takes, the actors had to be sprayed down to make it look like they were sweating.
A Klingon descendent mentions slaying a Yar-bear in the previous year; viewers are to assume that Worf, who held Tasha Yar's fighting skills in high regard (as established in her last appearance on The Next Generation), named a large predator on the new planet after his former crew-mate.
The stasis chamber into which Dr. Bashir places the present-day Odo (in his liquid state) for safe-keeping is a simple 20th century breadmaker, redressed with LEDs and other props attached to it.
Yedrin Dax's tendency to speak with his hands behind his back recalls the episode "Facets", which revealed that the habit was inherited from Lela, a previous host.