Aunt Zelda appears to be fluent in at least a dozen languages, including French, Italian, Russian, Japanese, Spanish and German, as shown by the newspaper she is reading at the kitchen table on each episode.
Stolas, Wardwell's familiar, is neither a crow nor a raven but a hybrid of two birds, combining the size and proportions of a raven, yet retaining the beak shape of a crow. The visual effects crew refers to Stolas as being a "craven".
Like Riverdale, the year in which the show takes place is intentionally never mentioned, so that the show can be simultaneously modern and retro. This is why elements of the town, schools, and much of the clothing in Greendale, is more reminiscent of the 1960s, when the source material is set, but there are also modern references, as well as cellphones and computers.
In this series, Salem doesn't talk or get as much screen time as he did in Sabrina the Teenage Witch (1996). One of the reasons behind this, besides the show pursuing a much darker tone, is that Kiernan Shipka is actually allergic to cats. At some point, showrunner Roberto Aguirre-Sacasa even considered turning Salem into a dog.
The character of Father Faustus Blackwood - the right hand man of the Dark Lord (Devil) - is named from the German folklore character, Faust, who sold his soul to the Devil for infinite knowledge. The historical Dr. Faust that the tales are based on lived in the region known as Schwarzwald, which literally translates into Black Forest, or... Blackwood.
Kiernan Shipka had long brown hair when she did her first screen test for Sabrina. She was asked to come back and do another screen test with short blonde hair. After she changed her hair, she was offered the part. Ross Lynch was asked to dye his hair brown, since the producers felt that he looked too similar to Kiernan Shipka with blonde hair.
Gives homage to both Suspiria and A Nightmare on Elm Street. The living room has the same color glass ceiling seen in Suspiria (which is also about a coven of witches) and the scene with Harvey (Ross Lynch) falling asleep with headphones on and a crop top is homage to Johnny Depp's character in Elm Street.
While cited as being based on characters from The Crucible, both the Putnam and Hawthorne families were actual Puritan families in Salem, Massachusetts. John Hathorne (later changed to Hawthorne) was the Chief Examiner during the Salem Witch Trials, and the Putnam family had multiple accusers in the Salem witch trials.
Takes place in the same universe as "Riverdale" which airs on the CW. "Supernatural" also airs on the CW and clearly shared actors with "The Chilling Adventures of Sabrina" if you look closely you can even spot the iconic 1967 Chevy Impala in the background of some shots.
Constance Blackwood shares a name with a young woman accused of poisoning her entire family in the novel "We Have Always Lived in the Castle," written by Shirley Jackson. Jackson is notoriously known for her horror novels, one of the most famous being The Haunting of Hill House.
Michelle Gomez has appeared in two previous science fiction and fantasy programmes prior to this. Previously she was in Gotham and had a recurring role in Doctor Who as Missy, the first ever female Master.
In episode 9 when Roz is asking Sabrina if Tommy has come back alive, she mentions that "Mr. Baterman was delivering a UPS package...". This could be a reference to Timmy Baterman from Pet Sematary, who was also killed and resurrected.
Pays homage to John Carpenter's The Fog. Each opens with the narrator telling us there is time enough for one more story before midnight. The Witches are shrouded in fog as they attack the town. The 13 Witches were betrayed, with betrayal leading to their deaths, as were the Lepers at Spivey Point in The Fog. In both, there are characters with ancestral ties to those who were betrayed. In both, the antagonists seek revenge against the town that betrayed them.