Editing Poison Ivy (character) (section)

==Fictional character biography==

===Pre-Crisis===
Dr. Lillian Rose, PhD<ref name="goodcomics.comicbookresources.com">{{cite web|url=https://cbr.com/the-abandoned-an-forsaked-poison-ivys-name-is-lillian-rose/|title=The Abandoned An' Forsaked - Poison Ivy's Name is Lillian Rose?!|website=Comic Book Resources|date=December 8, 2011|access-date=September 16, 2017}}</ref> is a promising botanist who is persuaded by Marc LeGrand into assisting him with the theft of an Egyptian artifact containing ancient herbs. Fearing she would implicate him in the theft, he attempts to poison her with the herbs, which are deadly and untraceable. She survives this murder attempt and discovers she has acquired an immunity to all natural toxins and diseases.<ref name=MMB>''World's Finest'' #252 (September 1978). DC Comics.</ref>

===Post-Crisis===
Following the events of the DC maxi-series comic ''[[Crisis on Infinite Earths]]'', which massively rebooted DC Universe history and continuity, Poison Ivy's origins were revised in ''[[Secret Origins]]'' #36, 1988, written by [[Neil Gaiman]].<ref name="goodcomics.comicbookresources.com"/> Her real name is Dr. Pamela Isley, PhD, a [[Gotham City]] botanist. She grows up wealthy with emotionally distant parents and later studies advanced botanical biochemistry at a university with [[Swamp Thing|Alec Holland]] under [[Floronic Man|Dr. Jason Woodrue]]. Isley, a shy girl, is easily seduced by her professor. Woodrue injects Isley with poisons and toxins as an experiment, causing her transformation.<ref>[http://www.mykey3000.com/cosmicteams/docs/swampthing.html Swamp Thing Chronology<!-- Bot generated title -->] {{webarchive|url=https://web.archive.org/web/20060502074552/http://www.mykey3000.com/cosmicteams/docs/swampthing.html |date=May 2, 2006}}, Mykey3000.com</ref> She nearly dies twice as a result of these poisonings, driving her insane. Later, Woodrue flees from the authorities leaving Isley in the hospital for six months. Enraged at the betrayal, she suffers from violent mood swings, being sweet one moment and evil the next. When her boyfriend has a car accident after mysteriously suffering from a massive [[fungus|fungal]] overgrowth, Isley drops out of school and leaves Seattle, eventually settling in Gotham City.<ref name=LotDK>''Batman: Legends of the Dark Knight'' #43. DC Comics.</ref>

She begins her criminal career by threatening to release her suffocating spores into the air unless the city meets her demands. Batman, who appears in Gotham that very same year, thwarts her scheme, and she is incarcerated in [[Arkham Asylum]].<ref name=SotB>''Batman: Shadow of the Bat'' Annual #3. DC Comics.</ref> From this point on, she has a kind of obsession with Batman, him being the only person she could not control due to his strong will and focus. Over the years, she develops plant-like superpowers, the most noticeable being a lethal toxin in her lips; she is literally able to kill with a kiss.

In subsequent issues, she states that she only started a life of crime to attain sufficient funds to find a location to be alone with her plants, undisturbed by humanity. A few years later, she attempts to leave Gotham forever, escaping Arkham to settle on a desert island in the [[Caribbean]]. She transforms the barren wasteland into a second [[Garden of Eden|Eden]], and is, for the first time in her life, happy. It is soon firebombed, however, when an American-owned corporation tests their weapons systems out on what they think is an abandoned island. Ivy returns to Gotham with a vengeance, punishing those responsible. After being willingly apprehended by Batman, she resolves that she can never leave Gotham, at least not until the world was safe for plants. From then on, she dedicates herself to the impossible mission of "purifying" Gotham.<ref name=BP>''Batman: Poison Ivy''. DC Comics.</ref>

At one point, Batman travels to Seattle to ascertain information on Pamela Isley's life before she became Poison Ivy. Here, Batman states that both of Pamela's parents are dead. When and why they died has been left undetermined.<ref name=LotDK />

While in Arkham, Poison Ivy receives a [[Language of flowers|message through flowers]] that someone is to help her escape. That night, two women, Holly and Eva, successfully break Ivy out and bring her back to their employer. She is less than happy to discover that it is the [[Floronic Man]], formerly known as Dr. Jason Woodrue, her former college professor that conducted the experiments on her. The only human portion of him remaining is his head, while the rest of his body is plant-based.

After striking a deal with him in the tunnels of Gotham, Ivy receives a trunk full of money in return for samples of her DNA. Woodrue intends to combine their DNA to create a "child", all while flooding the streets of Gotham with high-grade [[cannabis (drug)|marijuana]]. The purpose of this is to create a world economy run on [[hemp]] and to have their offspring control it. Batman intervenes, but is overcome by Woodrue's henchwomen, Holly and Eva. However, Ivy turns on Floronic Man and lets Batman go to fight the intoxicated maniac. In the end, Batman decapitates the Floronic Man, and Ivy escapes with her money.<ref>''Batman: Shadow of the Bat'' #56–58. DC Comics.</ref>

At times, Ivy demonstrates positive and maternal traits. When [[Gotham City]] is destroyed in an [[Batman: Cataclysm|earthquake]] and declared [[Batman: No Man's Land|No Man's Land]], she holds dominion over Robinson Park and turns it into a tropical paradise rather than fight over territory like most of Batman's enemies. Sixteen children who are orphaned during the quake come to live with her as she sympathizes with them having suffered a [[Psychological trauma|traumatic]] childhood herself.<ref>''Secret Files 1998''. DC Comics.</ref> She cares for them like sons and daughters, despite her usual [[misanthropy]]. That winter, [[Clayface]] (Basil Karlo) pays Ivy a visit, hoping to form a bargain with her. This would entail her growing fruits and vegetables, having the orphans harvest them, and him selling the produce to the highest bidder. She wants nothing to do with the plan, and she attempts to kill him with a kiss. Clayface overpowers her, however, and imprisons Ivy and the orphans for six months in a chamber under the park's lake. He feeds her salt and keeps her from the sun to weaken her. Eventually, Batman comes and discovers the imprisoned orphans and Ivy. The two agree to work together to take Karlo down. Batman battles Clayface and instructs [[Tim Drake|Robin]] to blow up the lake bed above, allowing the rushing water to break apart the mud, effectively freeing Ivy. She fights Karlo, ensnaring him in the branches of a tree and fatally kissing him. She then proceeds to sink him down into the ground, where he becomes fertilizer for Ivy's plants. Batman, originally intending to take the orphans away from Ivy, recognizes that staying with her is what is best for them, and they remain in her care until the city is restored. Also, as part of a bargain to keep her freedom, Batman arranges it so that Ivy provides fresh produce to the starving hordes of earthquake survivors.<ref name=FotE>''Batman: Shadow of the Bat'' #88, ''Detective Comics'' #735. DC Comics.</ref><ref>{{Cite comic | Writer = [[Greg Rucka|Rucka, Greg]] | Artist = [[Dan Jurgens|Jurgens, Dan]] [[Bill Sienkiewicz|Sienkiewicz, Bill]] | Title = Batman #568 | Volume =  | Issue = | Date = 1998 | Publisher = [[DC Comics]] | location = New York City| Page = | Panel = | ID = }}</ref> Soon after, Ivy finds [[Harley Quinn]], who had almost been murdered by [[Joker (character)|the Joker]], among the debris of the earthquake and nurses her back to health. The two have been best friends and partners-in-crime ever since.<ref>''Batman: Harley Quinn''. DC Comics.</ref>

After Gotham City is reopened to the public, the city council wants to evict her from the park and send her back to Arkham Asylum, as they are uncomfortable with the thought of a "psychotic [[eco-terrorism|eco-terrorist]] controlling the equivalent of 30-odd square blocks." They also mistakenly believe that the orphans in Ivy's care are hostages. The [[Gotham City Police Department]] threaten to spray the park with R.C. Sixty, a powerful [[herbicide]] that most certainly would have killed every living plant in the park, including Ivy, and more than likely do harm to the children. Ivy refuses to leave the park to the city and let them destroy the paradise she had created, so she chooses [[martyr]]dom. It is only after Rose, one of the orphans, is accidentally poisoned by Ivy that the hardened eco-terrorist surrenders herself to the authorities to save the girl's life. Batman says that, as much as she would hate to admit it, Ivy is still more human than plant.<ref>''Detective Comics'' #751–752. DC Comics.</ref>

Later on, she and other Gotham characters are manipulated by the [[Riddler]] and [[Hush (character)|Hush]]. Her task is to hypnotize both [[Superman]] and [[Catwoman]], using Catwoman to steal ransom money from [[Bane (DC Comics)|Bane]] after the original plan is interrupted by Batman while Superman serves as a 'bodyguard' when she hides in Metropolis. However, she abandons Catwoman to be killed by Killer Croc, and Batman is able to keep Superman busy in a fight (aided by the [[Kryptonite]] ring he was given long ago) long enough for him to escape Ivy's control. Soon afterwards, the Riddler, who is being chased and attacked by [[Hush (character)|Hush]], approaches Ivy and seeks her protection. Ivy, who is angered by the manipulation, battles the Riddler physically and psychologically. She comes to physically dominate her opponent, humiliating Riddler and temporarily breaking his spirit.<ref name=Low>''Detective Comics'' #797–799. DC Comics.</ref>

Ivy comes to believe that her powers are killing the children she had looked after, so with Bruce Wayne's help, she willingly undergoes treatment to become human again. Soon after, she is convinced by Hush to take another serum to restore her powers and apparently dies in the process. However, in ''Batman: Gotham Knights'', when her grave is visited shortly thereafter, it is covered with ivy, creating the impression her death would be short-lived.<ref>''[[Batman: Gotham Knights]]'' #60 - 65 (February - July 2005)</ref>

Shortly after, Poison Ivy appears briefly in Robinson Park, killing two corrupt cops who killed one of her orphans (although whether this takes place before or after the aforementioned storyline is unknown).<ref name=GC>''Gotham Central'' #32. DC Comics.</ref>

"[[One Year Later]]", Ivy is alive and active. Her control over flora has increased, referred to as being on a par with [[Swamp Thing]] or Floronic Man. She also appears to have resumed her crusade against the corporate enemies of the environment with a new [[fanaticism]], regarding Batman no longer as a main opponent, but as a "hindrance".<ref name="OYL"/> After arriving back from a year-long absence, Batman discovers that Ivy has been feeding people including "tiresome lovers", "incompetent henchmen", and those who "returned her smile" to a giant plant which would digest the victims slowly and painfully. She refers to these murders as a "guilty pleasure". In an unprecedented event, her victims' souls merge with the plant, creating a botanical monster called ''Harvest'', who seeks revenge upon Poison Ivy. With the intervention of Batman however, she is saved. Poison Ivy is left in critical condition, and the whereabouts of Harvest are unknown.<ref name="OYL">{{cite web | first=Ray | last=Tate | url=http://www.comicsbulletin.com/reviews/11578374516654.htm | title=Detective Comics #823 | access-date=2008-05-06 | date=September 9, 2006 | publisher=Comics Bulletin | archive-date=May 18, 2014 | archive-url=https://web.archive.org/web/20140518102540/http://www.comicsbulletin.com/reviews/11578374516654.htm | url-status=dead }}</ref>

===Other storylines===
In ''Countdown'' #37, the [[Pied Piper (DC Comics)|Pied Piper]] and the [[Trickster (DC Comics)|Trickster]] are hiding out in a greenhouse, picking fruits and vegetables from the plants. They run into Ivy, who is talking to her plants (presumably being told that Piper and Trickster hurt them), to which she reacts by tying them up in vines with the intention of killing them. She is then shown to have joined the Injustice League Unlimited and is one of the villains featured in ''[[Salvation Run]]''.<ref>{{Cite comic | Writer = [[Paul Dini|Dini, Paul]] [[Adam Beechen|Beechen, Adam]] | Penciller = Giffen, Keith, Lopez, David, Norton, Mike | Inker = Hillsmen, Don Ramos, Rodney | Story = Forbidden Fruit | Title = Countdown | Volume =  | Issue = #37 | Date = August 2007 | Publisher = DC Comics | Page = | Panel = | ID = }}</ref>

In the "[[Battle for the Cowl]]" storyline, she is coerced by a new [[Jeremiah Arkham|Black Mask]] into joining his group of villains that aims to take over Gotham. She and [[Killer Croc]] unsuccessfully attempt to murder [[Damian Wayne]].

Shortly after, she escapes from Black Mask's control and forms an alliance with [[Catwoman]] and [[Harley Quinn]], leading into the ongoing series ''Gotham City Sirens''.

During Hush's ploy to hurt Batman through hurting his loved ones, Hush kidnaps Catwoman and surgically removes her heart. After being saved by Batman, Catwoman is operated on by some of the most gifted surgeons in the world, including [[Doctor Mid-Nite]] and [[Mister Terrific (comics)|Mr. Terrific]]. [[Zatanna]] also gives her a magic antidote to help heal her wounds. To get even with Hush, Selina enlists the help of Poison Ivy, [[Harley Quinn]], [[Barbara Gordon|Oracle]], [[Holly Robinson (comics)|Holly Robinson]], and [[Slam Bradley]] to track down all of Hush's accounts, pilfer them, and leave him penniless. Selina pays Holly, Harley, and Ivy over $30 million each, hoping that they would use the funds to leave Gotham to start fresh somewhere else.<ref name="ReferenceA">{{Cite comic | Writer = Paul Dini | Penciller = [[Dustin Nguyen (artist)|Dustin Nguyen]] | Inker = Derek Fridolfs | Story = Heart of Hush, Part V of V: The Demon in the Mirror | Title = Detective Comics | Volume =  | Issue = #850 | Date = January 2009 | Publisher = DC Comics | Page = | Panel = | ID = }}</ref> However, Harley uses her money to go on a shopping spree, while Ivy gives her money away to organizations in [[Madagascar]] and [[Costa Rica]] dedicated to [[reforestation]].

After rescuing Catwoman from Boneblaster, a new villain trying to make a name for himself, Poison Ivy takes Catwoman back to the Riddler's townhouse. When there, Catwoman sees that Ivy has been keeping the Riddler under mind control so that she and Harley could use his townhouse as a hideout. Here, Catwoman decides that with Gotham City more dangerous than ever with all the gang wars and [[Dick Grayson|a new Batman]], a partnership with the other two women would be advantageous. However, Ivy fears that Catwoman has lost her edge and prowess, and consults with [[Zatanna]] on the nature of Catwoman's injuries. Zatanna responds that Catwoman has psychological wounds that would need healing. Ivy resolves that she and Harley would provide Catwoman with "positive female reinforcement". The three then agree to become a team. However, Harley and Ivy have one condition that Catwoman is to reveal to them Batman's secret identity.

Eventually, Ivy and the other Sirens ambush the Riddler at his office (with Ivy using her plants to truss and gag his secretary), telling him that they've been framed for the murder of a young nurse. He agrees to help clear their names, and during the discussion Ivy reveals that she has recently taken up a job at the Gotham division of [[S.T.A.R. Labs]] under an assumed name (Dr. Paula Irving).<ref>''Gotham City Sirens'' #9 (February 2010). DC Comics.</ref> She is eventually kidnapped and placed in a specialized containment unit by a researcher named Alisa Adams, but escapes and turns the table on her captor by binding her with vines. Ivy initially informs Adams that she plans to kill her, but instead decides to let her live after seeing a photograph of Alisa's young daughter. Ivy then threatens Alisa into keeping her mouth shut about her true identity, telling her that she will change her mind and kill her if she reveals her secret to anyone.<ref>''Gotham City Sirens'' #12 (May 2010). DC Comics.</ref>

When Harley Quinn betrays her friends and breaks into Arkham Asylum with the goal of killing the Joker, she ultimately chooses instead to release Joker from his cell, and together the two orchestrate a violent takeover of the facility.<ref>''Gotham City Sirens'' #20–23 (April–July 2011). DC Comics.</ref> Poison Ivy arrives and tries to convince Harley Quinn that the Joker is evil, but Harley Quinn refuses to believe her and knocks Poison Ivy unconscious. After they are defeated by Catwoman and Batman, Catwoman then tells Poison Ivy that they are no longer friends, after Ivy had drugged Catwoman in an attempt to discover Batman's identity. Poison Ivy is taken to Arkham Asylum.<ref name="Gotham City Sirens' 2011">''Gotham City Sirens'' #24 (June 2011). DC Comics.</ref> Ivy soon escapes and ambushes Harley in her cell, binding and gagging her former friend before she can defend herself. Ivy struggles with the decision to execute Harley for her betrayal, but ultimately releases her after realizing that she is still her friend. Together, the two set off to find Catwoman and make her pay for leaving them behind.<ref name="ReferenceC">''Gotham City Sirens'' #25 (July 2011). DC Comics.</ref> The two of them find Catwoman and fight her on the streets. While fighting, Catwoman confesses that she saw good in the both of them and only wanted to help them. When she tells them that she only kept tabs on them because Batman wanted to keep them under control, Ivy lashes out onto the city by using giant vines to destroy buildings, cursing at Batman for manipulating her. Batman is about to arrest them, but Catwoman helps the two of them escape.<ref>''Gotham City Sirens'' #26 (August 2011). DC Comics.</ref>

===The New 52===
In 2011, "[[The New 52]]" rebooted the DC universe. Poison Ivy is recruited into the covert-ops group known as the [[Birds of Prey (comics)|Birds of Prey]]. Though she is specifically hand-picked by the team's leader, [[Black Canary]], the other members of the group protest Ivy's inclusion, citing her violent past and connections to various murders.<ref>''Birds of Prey'' (vol. 3) #3 (November 2011)</ref> These suspicions are proven correct when Ivy poisons the team and forces them to attack corrupt companies she wants to destroy, until [[Katana (comics)|Katana]] apparently kills her.<ref>''Birds of Prey'' (vol. 3) #12 (October 2012). DC Comics.</ref>

Ivy survives the injuries and returns to Gotham, breaking out [[Clayface|Clayface/Basil Karlo]] to manipulate him into becoming her husband. Batman intervenes to help her, mainly because the locations she attacked were the [[Penguin (character)|Penguin]]'s properties. Poison Ivy ends up captured by Penguin's men.<ref>''Detective Comics'' (vol. 2) #14 (January 2013). DC Comics.</ref> She is buried alive by them, but survives long enough to be rescued by Penguin's right-hand man [[Emperor Blackgate|Emperor Penguin]] who has taken over his boss' businesses after [[Death of the Family|the Joker's return]]. He proposes an alliance with her.<ref>''Detective Comics'' (vol. 2) #15 (February 2013). DC Comics.</ref> However, Karlo, whom Batman had set free from Ivy's control, tracks down and attacks Poison Ivy.<ref>''Detective Comics'' (vol. 2) #16 (March 2013). DC Comics.</ref> Emperor Penguin later calls in a favor from Poison Ivy. This led to Emperor Penguin empowering himself with a chemical that is made from one of Poison Ivy's plant concoctions, the [[Man-Bat]] Serum, and the Venom drug.<ref>''Detective Comics'' (vol. 2) #19. DC Comics.</ref>

The character's origin, in this new [[DC Comics|DC]] universe, was presented in a special issue of ''[[Detective Comics]]'' (#23.1), during the "Villains Month" event in September 2013. Pamela Isley was born with a skin condition that prevented her from leaving her home. She spent most of her limited time outside in her family's garden. Her [[domestic violence|abusive]] father murdered her mother and buried her in the garden. While in college, Pamela sold pheromone pills to other students to study its effects until she was caught by police. She used a powerful version of the pills to control the dean's mind so he would drop the charges and let her graduate with honors. While visiting her father in prison, she kissed him, and the poison that was secreted from her lips killed him. Later she landed an internship in [[Wayne Enterprises]]' Bio-Chemistry Division developing pharmaceutical and cosmetic applications. She was fired after Bruce Wayne discovered her using company resources for an unauthorized project to brainwash people through plant pheromones. In an accident similar to that which created Mr. Freeze, Pamela attacks the security guards sent to escort her out and is exposed to lethal doses of her chemicals, triggering a mutation that gives her green skin, immunity to all toxins, and the ability to manipulate plant life.<ref>''Detective Comics'' (vol. 2) #23.1 (September 2013). DC Comics.</ref>

===''Cycle of Life and Death''===
[[File:Poison Ivy Pamela Isley.png|thumb|175px|Poison Ivy as Dr. Pamela Isley, PhD in ''Poison Ivy: Cycle of Life and Death'' #1 (March 2016). Art by Clay Mann and Seth Mann.]]
In January 2016, DC Comics debuted Ivy's first solo comic book series, ''[[Poison Ivy: Cycle of Life and Death]]''. The series begins with Ivy attempting to go straight by returning to her science career. Under her human identity of Dr. Pamela Isley, she joins the plant sciences department at the famed Gotham Botanical Gardens, but things quickly get complicated when Luisa Cruz, Ivy's friend and mentor, is murdered via poisoning. Ivy investigates the murder whilst completing a genetic engineering research project begun by Cruz that culminates in the creation of two plant-human hybrid children known as Rose and Hazel.

With the help of Selina Kyle and fellow researcher Darshan, Poison Ivy finds that the Gotham Botanical Gardens are performing experiments, using Ivy's research, which result in the creation of another plant-human hybrid child known as Thorn. Ivy destroys the laboratory and rescues the child. Ivy raises Rose, Hazel and Thorn who grow to adult size at an exponential rate, becoming young women within 35 weeks. When the girls sneak out to see Gotham City at night for the first time, they cause an incident at a strip club that gets the police involved, and Ivy has to help them escape.

Returning to the apartment, Ivy locks Rose, Hazel and Thorn away so they will not leave again. Ivy finds Doctor Eric Grimley, Chair of the Gotham Botanical Gardens Research Department, waiting for her. Grimley had been conducting experiments with Ivy's research to cure his own cancer; he had then murdered Luisa because she was suspicious of the experiments he was performing. Now, with his cancer returning, he intends to harvest Rose, Thorn, and Hazel for spores to be used as another cure. He attacks Ivy, and transforms into a giant, plant-like monster. Darshan arrives and releases the girls. Ivy, Rose, Hazel, Thorn, and Darshan, along with [[Alec Holland (comics)|Swamp Thing]] (who seeks to kill Grimley for trying to break the cycle of life and death) fight and defeat Grimley, with Thorn hacking him up with a machete.

Darshan later helps Rose, Thorn, and Hazel leave Ivy, reasoning that they were getting so restless they would go eventually with or without his help. They set off away from Gotham to places unknown, saying they plan to live out their lives regardless of how short they may be.

===DC Universe===
DC Comics began the next relaunch of its entire line of titles, called "[[DC Rebirth]]", in June 2016. DC opted to rebrand its titles under the "DC Universe" name in December 2017, using the continuity established from DC Rebirth.<ref>{{cite web|last=Johnston|first=Rich|title=The End Of DC Rebirth Announced At New York Comic-Con|url=https://bleedingcool.com/comics/end-dc-rebirth-announced-new-york-comic-con|website=bleedingcool|access-date=March 11, 2018|date=October 6, 2017}}</ref><ref>{{cite web|last=Bonthuys|first=Darryn|title=The Rebirth era is over, as a new direction begins in DC Universe|url=https://www.criticalhit.net/comics-toys/rebirth-era-new-direction-begins-dc-universe|website=criticalhit|access-date=March 11, 2018|date=December 1, 2017}}</ref> In the "Better Together" story arc of ''[[Trinity (comic book)|Trinity]]'', Poison Ivy finds a dreamworld and the White Mercy entity, both created by the Black Mercy plant for [[Mongul]], through her connection to the Green. After capturing Batman, Wonder Woman, and Superman, she places them into the dreamworld and intends to use the solar energy emitted from Superman's body to open a gateway to bring the White Mercy—whom she considers as a daughter—over from the dreamworld. It is later revealed that Mongul deceived Poison Ivy and intended to conquer Earth using Superman as a vessel. Mongul is defeated by the White Mercy, using Batman as a temporary and willing vessel. As Poison Ivy and the White Mercy bid farewell to each other, the White Mercy uses her connection to the Green to make Poison Ivy lose her memories of the incident, so Ivy does not need to suffer any heartache.<ref>''Trinity'' (vol. 2) #2–6 (December 2016 – April 2017). DC Comics.</ref> In the continuity, the "Better Together" story arc takes place after the events in ''[[Poison Ivy: Cycle of Life and Death]]'' involving Ivy's children.<ref>''Trinity'' (vol. 2) #5 (March 2017). DC Comics.</ref>

In ''Batgirl'', Poison Ivy helps Batgirl save an airplane and its passengers from a plant, one of Ivy's specimen, that is growing uncontrollably in the cargo bay. In the end, she reluctantly allows Batgirl to kill it.<ref>''Batgirl'' (vol. 5) #6 (February 2017). DC Comics.</ref>

In the "Ends of the Earth" arc of ''All-Star Batman'', Poison Ivy goes into [[Death Valley]] where she conducts research on a barren tree to discover cures. Here, Batman asks Poison Ivy for help with a deadly bacteria, which was unleashed by [[Mr. Freeze]], informing her about an infected girl and giving her samples of it. Upon examining it, Ivy realizes that the infected girl is already dead and Batman wanted to evoke her sympathy as he is actually seeking for a cure to combat the spread of the disease. She also reveals that, when she was still working at [[Wayne Enterprises]], she had presented her research wrongly as she thought Bruce Wayne wanted something to manipulate people but she was actually researching pheromones to make people feel good. Batman warns Ivy that an [[League of Assassins|unknown strike force]] is after her, because they know Ivy is able to pull biological weapons from the tree. After Batman helps Ivy in the fight, Ivy synthesizes a selective agent that can destroy the spores without harming the hosts.<ref>''All Star Batman'' #7 (April 2017). DC Comics.</ref>

In "The War of Jokes and Riddles" story arc of ''Batman'', Poison Ivy has allied herself with the [[Riddler]] in his war against the [[Joker (character)|Joker]].<ref>''Batman'' (vol. 3) #26, 28, 29, 31 (September–November 2017).</ref> In the arc, when the Riddler was trying to convince her to join his side, she is seen stopping [[Carmine Falcone]]'s men—who are sent to kill the Riddler—by capturing them in vines.<ref>''Batman'' (vol. 3) #26 (September 2017).</ref>

In the "Gotham Resistance" tie-in story arc for ''[[Dark Nights: Metal]]'', Poison Ivy controls a jungle-like realm within a [[Gotham City]] warped by the dark energy emitted from the dark metal in the cards given by the Batman Who Laughs to various enemies of Batman including Poison Ivy herself. Poison Ivy captures [[Harley Quinn]]—who realizes that Poison Ivy is not herself—[[Green Arrow]], [[Nightwing]], [[Damian Wayne|Robin]], and [[Killer Croc]] as they try to solve what is going on and stop it. They escape when Poison Ivy violently reacts to her plants being harmed during an attack by several members of the [[Teen Titans]] and [[Suicide Squad]], who all also have been twisted, as well as a Dark Robin.<ref>''Suicide Squad'' (vol. 5) #16 (November 2017); ''Green Arrow'' (vol. 6) #32 (December 2017). DC Comics.</ref>

In the "Source Code" story arc of ''[[Batgirl and the Birds of Prey]]'', Poison Ivy infiltrates and tries to take down Terracare, a company whose fertilizers contain a secret ingredient destructive to bee populations. She comes across the Birds of Prey ([[Huntress (Helena Bertinelli)|Huntress]], [[Black Canary]], and [[Barbara Gordon|Batgirl]]) and [[Catwoman]] who were trying to save the [[Calculator (comics)|Calculator]]'s family held hostage by Terracare. Terracare had namely traced back a data breach to the Calculator who sold the information to Catwoman, so she could steal a vial of the ingredient from Terracare for Poison Ivy. She did this for Ivy, as [[Gotham City Sirens|Ivy once saved her from Boneblaster]]. After they stopped those responsible at Terracare, Batgirl arranges that Poison Ivy becomes the chemist in charge of the fertilizers.<ref>''Batgirl and the Birds of Prey'' #12–13 (September–October 2017). DC Comics.</ref> After this arc, Poison Ivy is occasionally seen working at Terracare (now acquired by Gordon Clean Energy) or helping the Birds of Prey against villains (such as the Daughters of Gotham or the Calculator).<ref>''Batgirl and the Birds of Prey'' #14–17 (November 2017 – February 2018), #19 (April 2018), #21–22 (June–July 2018). DC Comics.</ref>

In the "Unnatural Disaster" storyline of ''Damage'', Poison Ivy has fallen under the influence of forces that led to a desire to destroy humanity. She partnered with [[Gorilla Grodd]] for that purpose. They fought against Damage (Ethan Avery) who is trying to protect people from them. However, Poison Ivy eventually resists the control of these forces, as she thinks that people are worth saving and does not want to be a killer. At the end, [[Alec Holland (comics)|Swamp Thing (Alec Holland)]] reveals to Ethan Avery that the [[Parliament of Trees#The Green|Green]] is trying to change Poison Ivy but has not succeeded.<ref>''Damage'' (vol. 2) #4–6 (June–August 2018). DC Comics.</ref>

''Batman'' (vol. 3) #41&ndash;43 features a Poison Ivy arc titled "Everyone Loves Ivy". Fueled by her guilt over the men she thought she killed in "The War of Jokes and Riddles", Poison Ivy uses her powers to take control of everyone on earth, except Batman and Catwoman. With the help of Harley Quinn, Batman and Catwoman convince Poison Ivy to release the world from her control. At the end of arc, Poison Ivy enters a facility known as the Sanctuary for rehabilitation.<ref name=el>{{cite web|first=Jim|last=Johnson|url=https://www.cbr.com/batman-cat-woman-poison-ivy-hero-villain/|title=Batman's Rogues Gallery Has Lost a Villain, But Gotham's Gained a Hero|work=[[Comic Book Resources]]|publisher=Valnet, Inc.|location=Montreal, Quebec, Canada|date=March 21, 2018}}</ref>

In ''[[Heroes in Crisis]]'', at the mental health institution Sanctuary, Poison Ivy is seen giving a confession in which she states that she should not be there because they are made for heroes and she is a terrorist. Earlier, [[Harley Quinn]] had told Poison Ivy to go to Sanctuary and followed her there.<ref>''Heroes in Crisis'' #2 (December 2018). DC Comics.</ref> Ivy and several others are killed when [[Wally West]] loses control of the [[Speed Force]], but Wally revives Ivy from the Green by using the Speed Force on a rose that was a part of Ivy given to Harley.<ref>''Heroes in Crisis'' #7–9 (2019). DC Comics.</ref> The following ''Harley Quinn and Poison Ivy'' limited series shows Ivy still struggling to completely regenerate. With Harley's aid, Ivy is eventually restored fully, but accidentally creates an identical plant duplicate of herself during her recovery. Both innocently unaware of being a duplicate, the Ivy-double and Harley go on the run together when enemies attack, leaving behind the real Ivy feeling abandoned and betrayed. By the time the pair learn of their mistake, Ivy is murderously insane towards Harley, forcing the double to sacrifice herself to save Harley and stabilize Ivy's sanity.

===''Harley Quinn'' comic===
''Harley Quinn'' features Ivy as Harley's best friend and then lover. Ivy has helped Harley out on several adventures between her ecological terrorism gigs back in Harley's new home on [[Coney Island]]. She helps Harley explain to the local assassins that Harley posted her own bounty while sleepwalking and that trying to kill her would just lead to their deaths and no pay day. Harley rescued her from a super villain's mind control while Ivy was secretly held prisoner and used by said villain in Arkham. She assisted in hiring the Gang of Harleys and nursing Harley back to health when [[Captain Strong]]'s seaweed put her in the hospital. She and Catwoman joined Harley on a road trip when Harley's uncle died and found that while both she and Harley are immune to most toxins, that does not include some secret drink brewed up on an Indian reservation. She and Harley were invited to spend a romantic week in Bermuda on a [[nudist colony]] by [[Sy Borgman]]. When there was a dispute over some real estate Ivy helped turn it into protected swampland. Also, when [[Penguin (character)|the Penguin]] attacks New York with giant killer penguins, she helps defeat him by growing a giant daisy in what their friend Eggy calls "the worst [[Kaiju]] fight ever."

[[Tee Franklin]], one of the writers of the ''Harley Quinn'' comics, has stated that she wrote Ivy as [[autism spectrum|autistic]], but "figured DC would be against" this being mentioned in the comics.<ref>{{Cite tweet |last=Franklin |first=Tee |author-link= |user=MizTeeFranklin |number=1685331483098013696 |date=29 July 2023 |title=Right!?! And I wrote Ivy as autistic, I was gonna try and write the dx it in the comic, but figured DC would be against it, so I just sprinkled it in both series. 🥰 Side note: HOELEE SHIT! I didn't know you followed me, huge fan! |script-title= |trans-title= |language= |retweet= |location= |access-date=27 February 2024 |link= |url-status= |archive-url= |archive-date= |quote= |ref=}}</ref>