Darrin wishes the bush he has been trimming would go away. It does, leaving only a smooth spot of ground. Later, when the neighbor takes Darrin out to where the bush was, there is a hole in the ground.
The ceiling of the living room appears to be at least 14 feet, meaning the master bedroom couldn't be on the second story.
This is a quasi-sequel to season three's "A Most Unusual Wood Nymph".
This episode completed filming on November 25, 1970.