Editing Poison Ivy (character) (section)

===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>