|“||Such a shame. Your wedding was the last thing I was living for. I lost a grandson, but you, you've lost the love of your young life. Poor child.||”|
|— Rose to Betty (thinking she was Polly)[src]|
Rose is the mother of late Claudius and Clifford Blossom, both of whom were killed by her daughter-in-law, Penelope, with poison. She is the grandmother of Clifford's two children, Cheryl and Jason, the latter also being deceased. She is also the great-grandmother to Jason's and Polly's twin babies, Juniper and Dagwood.
Rose moved in with Cheryl and her daughter-in-law Penelope in their new home, Thistlehouse after Cheryl destroyed their former residence, Thornhill. Rose, the rightful owner of Thistlehouse, soon became victim to Claudius' and Penelope's schemes, first being poisoned with tannis root, followed by being pushed, at least according to Cheryl, down the stairs leaving her in a critical state in the hospital. She's since recovered enough to be released from the hospital and remains at Thistlehouse, under the ever-watchful eye of Claudius.
Fairly little is known of Rose's early life. What is known, is her affection for Polly Cooper. She took a liking to Polly as the young lady dated Jason, her grandson. At some point during their relationship, Rose gifted Polly with a ring that had been in the Blossom family for generations.
Nana Rose and Cheryl are called over to the Five Seasons by Betty, along with Fred and Sierra to discuss with them the patients from the Sisters of Quiet Mercy, who have been orphaned. While Betty has been housing them, that has become untenable. So, she’s called them over to ask for shelter just until the Sisters testify against Hiram Lodge. Fred agrees to take in some of the boys since he has the room now that Archie is gone. Rose also agrees. She’s saved many children from there before and will gladly do so again. With that, Nana Rose and Cheryl will board some of the girls at Thistlehouse. While all Sierra has to offer is a pullout couch, she agrees to take in a couple too.
After discovering that Claudius had died while in his cell, the Blossoms hold Claudius’ funeral at Thistlehouse. Rose, Penelope, Cheryl, and Toni are in attendance. At the podium, Penelope states that Claudius was never welcomed to Riverdale and that this is likely why he killed himself. Betty takes a seat next to Nana Rose, who is unconvinced by Penelope’s supposed grief, calling her out for having "crocodile tears".
While trimming the flowers outside Thistlehouse, Nana Rose is approached by Cheryl who is in search of Toni. Rose hadn’t seen Toni since she gave her an envelope of money for rent.
Nana Rose wakes Toni up to warn her that the hunt is afoot at the Thornhill Nature Preserve, and Archie, Betty, Veronica, and Jughead are the hunted. It’s up to Toni to save them, but first, Toni must save Cheryl.
Just outside Thistlehouse, Toni has rallied the Pretty Poisons and Southside Serpents in preparation to storm the Farm and retrieve Cheryl. Much to their surprise, Cheryl has already escaped. She joins them, handing Juniper off Peaches 'N Cream, who hands her off to Nana Rose. Cheryl runs into Toni’s arms and they kiss. Cheryl asks where is Betty. Nana Rose replies that she’s being hunted at Thronhill with all the others. Penelope has been planning this for weeks. It’s the grand hunt. With little time to spare, the Poisons and Serpents ride out.
Fred’s funeral is held. Nana Rose, Cheryl, Toni, Peaches 'N Cream, Betty, Archie, Veronica, Jughead, Mary, FP, Pop, Josie, Kevin, Tom, Sierra, are in attendance, along with many others. Josie sings "Amazing Grace" as Archie, Jughead, Reggie, Kevin, FP, and Tom carry the casket. After the town pays their respect, Archie says a few words, ending with Fred Andrews will always be a part of Riverdale.
Nana Rose startles Cheryl and Toni with her scream in the middle of the night. They find her standing by the fireplace. She mistakes Cheryl for her mother Penelope and tells her how she thought she saw the triplets burning in the fire. Cheryl explains that she’s not her mother and that Juniper and Dagwood, the twins, are sleeping soundly in their nursery.
Cheryl returns to Thistlehouse to find Darius, a night nurse that Toni found online sitting in her living room. Cheryl reluctantly agrees to have Darius around, but not without laying down the rules. She instructs him to only attend to Nana Rose and to stay out of the Blossom chapel in the basement.
Darius requires money and a skeleton key for the house from Cheryl and Toni as Thistlehouse is infested with rats, which accounts for the noises they’ve been hearing. After learning that Darius went into the basement against her orders, Cheryl instead decides to fire him.
Nana Rose watches over the twins. Cheryl and Toni enter the living room to find the twins sound asleep despite hearing crying. Cheryl asks Nana Rose for the other baby monitor. She tells them that she heard Cheryl’s brother crying in the chapel.
Nana Rose, Cheryl, and Toni break out the Ouija board and hold a seance. They ask if the entity inside the doll is present. The planchette moves to yes. Toni accuses Cheryl of moving it, but she swears she isn’t. Cheryl asks the spirit for its name, and the planchette moves to the letter "J". Again, Toni accuses Cheryl of moving the planchette, however, Cheryl insists this isn’t her doing. Nana Rose confirms that it’s not Jason or Cheryl moving the board. It’s Julian. Penelope held three babies in her womb. Julius was to be Cheryl and Jason’s triplet, but in the end, only Cheryl and Jason were born because Cheryl absorbed Julian. Penelope was so devastated that she procured the doll and reared it alongside Cheryl and Jason until they were no longer infants, at which point Julian was retired to the attic. Toni is beyond skeptical. She suspects that Cheryl and Nana Rose are working together to make her realize that things were better when Jason was there, so they’d dig him back up and bring him back to the chapel. Toni asks if they bring Jadon back, will the haunting stop and can they get rid of the doll and bury it in Jason’s grave. Cheryl happily agrees to her terms.
Toni approaches Cheryl with Julian’s doll after finding him on the bed. Although, it pains Cheryl to admit it, she was gas-lighting Toni before, but now she swears on Jason’s life that she truly has no idea how the doll got back on the house. Nana Rose tells them it’s Julian who returned the doll.
At Thistlehouse, Cheryl awakens to find her mother, father, brother, and her Nana Rose standing at the end of her bed. Penelope has Julian in hand, explaining that they’ve come to give Julian Cheryl’s body.
Cheryl, Toni, and Nana Rose meet with aunt Cricket and uncle Bedford to discuss the family maple business. They wish to sell it. The rest of the family is in agreement. With Clifford dead and Penelope in the wind, they need Cheryl’s signature to move forward. The business hasn’t been profitable in years and it’s bleeding them dry. While Toni reminds Cheryl that the choice is hers to make, she also reminds her of all the hardship Thistlehouse has brought her. If they were to sell it, they could have a fresh start elsewhere. Cheryl initially agrees to consider their offer. With business settled, aunt Cricket and uncle Bedford were hoping to go to the chapel to light a votive candle of thanksgiving in celebration. They always visit with the ancestors whenever they come to Thistlehouse. Worried that they will uncover Jason’s body, Cheryl takes back her potential acceptance of their deal and demands they leave.
Cheryl believes that somehow it was Julian that conspired to bring her extended family upon them, and so, it’s time to get rid of him once and for all. Toni and Nana Rose watch as Cheryl drowns Julian in the tub, placing him under water and laying a brick on top to keep him from floating up.
Nana Rose attends Thanksgiving dinner along with Cheryl, Toni, Cricket, and Fester. During dinner, Cheryl looks to Nana Rose to regale them with the tale of the first Blossom Thanksgiving. Cheryl, Toni, Cricket, and Fester listen closely as Nana Rose tells the story of the Blossom settlers. The weather turned and the settlers were surprised by the sudden, brutal onset of ice. The wagons were snowed in and soon after, the hunger set in. They grew so hungry that they had to eat their own to survive. Cannibalism, Cheryl remarks. She can only imagine what a scandal like that would do to the family name, especially if it were to come out right as aunt Cricket was trying to negotiate the sell of their maple business. Cricket is certain no one would believe Cheryl. Cheryl retorts the Blossoms have always been highly carnivorous. She ate her brother Julian in the womb and Cricket is eating the meat pies Cheryl made specifically for her and Fester. Inside his meat pie, Fester finds Bedford’s ring. Cheryl tells her aunt Cricket that she’s welcome to search the house as uncle Bedford will never be found. Any evidence that he was ever there is in the process of being digested, meaning Cheryl fed uncle Bedford to her aunt Cricket and cousin Fester. Cheryl then offers them desert as Toni rolls Jason’s corpse into the dinning room. Cheryl informs them that they’ve just committed a vile act of cannibalism, which is illegal. She threatens to expose them to the world should they continue to pressure her. With no other option, Cricket and Fester leave Thistlehouse.
Cheryl pretends to commit suicide in order to lure her mother out of the walls of Thistlehouse. She does so successfully. Penelope wakes up tied to a chair. In front of her sits Cheryl, Toni, Nana Rose, Jason, and Julian. Cheryl is putting her mother on trial. She’s being charged with prolonged gaslighting to convince Cheryl that’s she’s crazy, attempting to murder Archie, Betty, Veronica, and Jughead, and actually murdering Clifford, Claudius, and Hal Cooper.
Despite her mother’s wicked machinations, Cheryl’s looking for a reason to spare her life. She wonders why her mother has always been so cruel to her. She was brutalized her entire life. To make matters worse, Penelope tried to kill her friends and then hid in Thistlehouse to keep torturing her. Penelope confesses that she wasn't trying to stop Cheryl's happiness with Toni. She wanted to destroy Cheryl’s happiness with Jason. In that case, Cheryl rules that Penelope is guilty of being hateful to her rotten core. Rather than executing Penelope or sending her to jail, Cheryl has plans of sending her somewhere so vile that she’ll wish to be bricked up in Thistlehouse’s walls.
As the oldest resident in town, Alice seeks insight from Nana Rose Blossom as to when the darkness began to take hold of Riverdale. Rose states that Riverdale is a town born of blood, and it has bathed in it every since.
All across Riverdale, the townsfolk recover the videotapes placed at their doorsteps, including Cheryl, Toni, and Nana Rose at Thistlehouse.
Nana Rose learns from Cheryl that Mr. Honey canceled prom. So, Mary, Alice, and Hermione lead the charge into Riverdale High looking to confront Mr. Honey. Veronica, Betty, Archie, Jughead, Cheryl, Nana Rose, Hiram, FP, Kevin, and Tom follow closely behind. They demand that he reinstate prom and re-invite the students he barred from attending. Mr. Honey refuses, explaining that it’s his job to prepare the students to be upstanding students of the world and their behavior needs to reflect that. Mary informs Mr. Honey of a case that took place against the Greendale school district. A principal canceled prom and the parents sued him and won for psychological damage. Hiram reminds Honey that as Mayor of Riverdale, he has a direct line to governor Dooley, who could revoke his credentials. Alice adds that the news station has been looking for a gripping new story that would make nationwide headlines. FP and Tom add that they’re just the muscle. As President of the PTA, Alice demands a vote on the matter.
Afterward, they meet at the diner, where Cheryl reveals that prom is back on. She proposes a toast to generations united. Together, they’ve proven victorious. Alice expresses how proud they are of them all. Mary notes that the kids have been through a lot, much more than they had when they were in high school. Hermione and Hiram add that the kids mean the world to them and that they always want what’s best for them. Tom agrees that they’ve earned the right to celebrate. Lastly, FP exclaims that Jughead’s going to be the first Jones to go to college.
Rose is an elderly woman with a frail body, pale skin, and white hair, with a red streak. Notably, Nana Rose has what appears to be some kind of eye condition, possibly blindness as her left eye is a milky-white color, while her right eye is hazel, and looks perfectly fine. Unsurprisingly, she's known to wear clothing that one would expect an elderly person to wear, such as wool sweaters and long, dark-colored skirts.
Having been diagnosed with dementia, Nana Rose suffers from extreme delusion and memory distortion. At Jason's memorial, she confused Betty Cooper, for her sister, Polly, who was engaged to Jason prior to his death. According to Cheryl, Rose comes from a gypsy bloodline, which she believes allows her to predict the gender of a woman's unborn child, specifically Polly's child. However, Rose later revealed that Polly was having twins, one of each gender which had been revealed during a conversation between Cheryl and Betty. This prediction later came true although the means in which Rose managed to make this prediction remains unknown.
Rose is quite accepting when she met Polly with Jason when she gave Jason the family wedding ring. Despite Polly being a "Cooper", she didn't seem to care. As if the only thing that mattered to her is that they both loved each other very much.
Despite not having many scenes together, it is implied Rose cares greatly for her grandchild Cheryl, after having informed Toni Topaz of Cheryl's whereabouts after she was admitted to the Sisters of Quiet Mercy by Penelope. She immediately in a lucid state agreed to house some of the Sisters Of Quiet Mercy escapees, showing disdain for that place despite adopting her future daughter-in-law Penelope from there.
- "Chapter Fifty-Eight: In Memoriam"
- "Chapter Sixty: Dog Day Afternoon"
- "Chapter Sixty-One: Halloween"
- "Chapter Sixty-Three: Hereditary"
- "Chapter Sixty-Four: The Ice Storm"
- "Chapter Sixty-Five: In Treatment" (mentioned)
- "Chapter Sixty-Six: Tangerine"
- "Chapter Seventy-Two: To Die For"
- "Chapter Seventy-Four: Wicked Little Town"
- "Chapter Seventy-Six: Killing Mr. Honey"
- See also: Category:Images of Rose Blossom
Season 1 Screencaps
Season 2 Screencaps
Season 3 Screencaps